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  • Ruby on Rails - A Competent Web Development Application

    Written in Ruby programming language, Ruby on Rails is one of the most frequently used web application development framework. Often termed as RoR or Rails, it is an open source web development framework which is basically an object oriented programming language encouraging simple development, complete and potent web applications encompassing rich interactivity and functionality.

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  • Different routing rules for a particular user using firewall mark and ip rule

    - by Paul Crowley
    Running Ubuntu 12.10 on amd64. I'm trying to set up different routing rules for a particular user. I understand that the right way to do this is to create a firewall rule that marks the packets for that user, and add a routing rule for that mark. Just to get testing going, I've added a rule that discards all packets as unreachable: # ip rule 0: from all lookup local 32765: from all fwmark 0x1 unreachable 32766: from all lookup main 32767: from all lookup default With this rule in place and all firewall chains in all tables empty and policy ACCEPT, I can still ping remote hosts just fine as any user. If I then add a rule to mark all packets and try to ping Google, it fails as expected # iptables -t mangle -F OUTPUT # iptables -t mangle -A OUTPUT -j MARK --set-mark 0x01 # ping www.google.com ping: unknown host www.google.com If I restrict this rule to the VPN user, it seems to have no effect. # iptables -t mangle -F OUTPUT # iptables -t mangle -A OUTPUT -j MARK --set-mark 0x01 -m owner --uid-owner vpn # sudo -u vpn ping www.google.com PING www.google.com (173.194.78.103) 56(84) bytes of data. 64 bytes from wg-in-f103.1e100.net (173.194.78.103): icmp_req=1 ttl=50 time=36.6 ms But it appears that the mark is being set, because if I add a rule to drop these packets in the firewall, it works: # iptables -t mangle -A OUTPUT -j DROP -m mark --mark 0x01 # sudo -u vpn ping www.google.com ping: unknown host www.google.com What am I missing? Thanks!

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  • Configure Domino to use SMTP routing and hMailServer

    - by Sébastien Lachance
    I have been trying for a couple of days to set up a Domino 8.5 server. Basically, I want everything to be run inside a local network. Right now I can send email to other user in the Domino directory without any mail address. I am pretty new to all this stuff, so maybe the answer will be really obvious. What I need to do is be able to send a mail from somewhere else to a domino user that will be redirected to his account. On the Domino server, I also have hMailServer installed on port 25. I configured Domino to use port 26. I followed those step to get where I am now. -I have set the Fully qualified Internet host name to "preview.notes". -Smtp Listener task changed to Enabled to turn on the Listener so that the server can receive messages routed via SMTP routing -Setting up SMTP routing within the local Internet domain (http://www.h2l.com/help/help85%5Fadmin.nsf/f4b82fbb75e942a6852566ac0037f284/7f9738a49efc4f58852574d500097b01?OpenDocument) -I modified the person to use the [email protected] address. -I'm using the hMailServer (which have the local "preview.local" domain name) to send mail to [email protected]. When sending mail I got an error telling that the DNS is not set up correctly. Is using the Domino Smtp server instead of hMailServer will solve the problem? I can Telnet the Domino Smtp Server.

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  • Routing data through VPN in linux

    - by Shadyabhi
    I think its a silly question but still here it goes.. Terminal Output: eth0 Link encap:Ethernet HWaddr 00:1c:c0:37:5e:25 inet addr:10.100.98.51 Bcast:10.100.98.255 Mask:255.255.255.0 inet6 addr: fe80::21c:c0ff:fe37:5e25/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:29677 errors:0 dropped:0 overruns:0 frame:0 TX packets:5209 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:3179007 (3.1 MB) TX bytes:610142 (610.1 KB) Memory:e0380000-e03a0000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:76 errors:0 dropped:0 overruns:0 frame:0 TX packets:76 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:9555 (9.5 KB) TX bytes:9555 (9.5 KB) vpn_0 Link encap:Ethernet HWaddr 00:ac:39:95:a1:16 inet6 addr: fe80::2ac:39ff:fe95:a116/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1786 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:128597 (128.5 KB) TX bytes:468 (468.0 B) Actually, I followed this tutorial to setup the PacketiX VPN on ubuntu. Now, how do I actually use this VPN? Terminal Output: shadyabhi@shadyabhi-desktop:~$ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.100.98.0 * 255.255.255.0 U 1 0 0 eth0 link-local * 255.255.0.0 U 1000 0 0 eth0 default 10.100.98.4 0.0.0.0 UG 0 0 0 eth0 shadyabhi@shadyabhi-desktop:~$ As told in tutorial, if I do route del default route add default dev vpn_0 I am not able to surf the internet. And I get the route command output as: root@shadyabhi-desktop:/home/shadyabhi# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.100.98.0 * 255.255.255.0 U 1 0 0 eth0 link-local * 255.255.0.0 U 1000 0 0 eth0 default * 0.0.0.0 U 0 0 0 vpn_0 root@shadyabhi-desktop:/home/shadyabhi# I know I am not able to route the traffic properly. How do i do that?

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  • Does anyone know how to appropriately deal with user timezones in rails 2.3?

    - by Amazing Jay
    We're building a rails app that needs to display dates (and more importantly, calculate them) in multiple timezones. Can anyone point me towards how to work with user timezones in rails 2.3(.5 or .8) The most inclusive article I've seen detailing how user time zones are supposed to work is here: http://wiki.rubyonrails.org/howtos/time-zones... although it is unclear when this was written or for what version of rails. Specifically it states that: "Time.zone - The time zone that is actually used for display purposes. This may be set manually to override config.time_zone on a per-request basis." Keys terms being "display purposes" and "per-request basis". Locally on my machine, this is true. However on production, neither are true. Setting Time.zone persists past the end of the request (to all subsequent requests) and also affects the way AR saves to the DB (basically treating any date as if it were already in UTC even when its not), thus saving completely inappropriate values. We run Ruby Enterprise Edition on production with passenger. If this is my problem, do we need to switch to JRuby or something else? To illustrate the problem I put the following actions in my ApplicationController right now: def test p_time = Time.now.utc s_time = Time.utc(p_time.year, p_time.month, p_time.day, p_time.hour) logger.error "TIME.ZONE" + Time.zone.inspect logger.error ENV['TZ'].inspect logger.error p_time.inspect logger.error s_time.inspect jl = JunkLead.create! jl.date_at = s_time logger.error s_time.inspect logger.error jl.date_at.inspect jl.save! logger.error s_time.inspect logger.error jl.date_at.inspect render :nothing => true, :status => 200 end def test2 Time.zone = 'Mountain Time (US & Canada)' logger.error "TIME.ZONE" + Time.zone.inspect logger.error ENV['TZ'].inspect render :nothing => true, :status => 200 end def test3 Time.zone = 'UTC' logger.error "TIME.ZONE" + Time.zone.inspect logger.error ENV['TZ'].inspect render :nothing => true, :status => 200 end and they yield the following: Processing ApplicationController#test (for 98.202.196.203 at 2010-12-24 22:15:50) [GET] TIME.ZONE#<ActiveSupport::TimeZone:0x2c57a68 @tzinfo=#<TZInfo::DataTimezone: Etc/UTC>, @name="UTC", @utc_offset=0> nil Fri Dec 24 22:15:50 UTC 2010 Fri Dec 24 22:00:00 UTC 2010 Fri Dec 24 22:00:00 UTC 2010 Fri, 24 Dec 2010 22:00:00 UTC +00:00 Fri Dec 24 22:00:00 UTC 2010 Fri, 24 Dec 2010 22:00:00 UTC +00:00 Completed in 21ms (View: 0, DB: 4) | 200 OK [http://www.dealsthatmatter.com/test] Processing ApplicationController#test2 (for 98.202.196.203 at 2010-12-24 22:15:53) [GET] TIME.ZONE#<ActiveSupport::TimeZone:0x2c580a8 @tzinfo=#<TZInfo::DataTimezone: America/Denver>, @name="Mountain Time (US & Canada)", @utc_offset=-25200> nil Completed in 143ms (View: 1, DB: 3) | 200 OK [http://www.dealsthatmatter.com/test2] Processing ApplicationController#test (for 98.202.196.203 at 2010-12-24 22:15:59) [GET] TIME.ZONE#<ActiveSupport::TimeZone:0x2c580a8 @tzinfo=#<TZInfo::DataTimezone: America/Denver>, @name="Mountain Time (US & Canada)", @utc_offset=-25200> nil Fri Dec 24 22:15:59 UTC 2010 Fri Dec 24 22:00:00 UTC 2010 Fri Dec 24 22:00:00 UTC 2010 Fri, 24 Dec 2010 15:00:00 MST -07:00 Fri Dec 24 22:00:00 UTC 2010 Fri, 24 Dec 2010 15:00:00 MST -07:00 Completed in 20ms (View: 0, DB: 4) | 200 OK [http://www.dealsthatmatter.com/test] Processing ApplicationController#test3 (for 98.202.196.203 at 2010-12-24 22:16:03) [GET] TIME.ZONE#<ActiveSupport::TimeZone:0x2c57a68 @tzinfo=#<TZInfo::DataTimezone: Etc/UTC>, @name="UTC", @utc_offset=0> nil Completed in 17ms (View: 0, DB: 2) | 200 OK [http://www.dealsthatmatter.com/test3] Processing ApplicationController#test (for 98.202.196.203 at 2010-12-24 22:16:04) [GET] TIME.ZONE#<ActiveSupport::TimeZone:0x2c57a68 @tzinfo=#<TZInfo::DataTimezone: Etc/UTC>, @name="UTC", @utc_offset=0> nil Fri Dec 24 22:16:05 UTC 2010 Fri Dec 24 22:00:00 UTC 2010 Fri Dec 24 22:00:00 UTC 2010 Fri, 24 Dec 2010 22:00:00 UTC +00:00 Fri Dec 24 22:00:00 UTC 2010 Fri, 24 Dec 2010 22:00:00 UTC +00:00 Completed in 151ms (View: 0, DB: 4) | 200 OK [http://www.dealsthatmatter.com/test] It should be clear above that the 2nd call to /test shows Time.zone set to Mountain, even though it shouldn't. Additionally, checking the database reveals that the test action when run after test2 saved a JunkLead record with a date of 2010-12-22 15:00:00, which is clearly wrong.

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  • IPSec Tunnel to Amazon EC2 - Netkey, NAT, and routing problem

    - by Ernest Mueller
    Hey all, I'm working on getting an IPSec VPN working between Amazon EC2 and my on-premise. The goal is to be able to safely administer stuff, up/download data, etc. over that tunnel. I have gotten the tunnel up in openswan between a Fedora 12 instance with an elastic IP and a Cisco router that's also NATted. I think the ipsec part is OK, but I'm having trouble figuring out how to route traffic that way; there's no "ipsec0" virutal interface because on Amazon you have to use netkey and not KLIPS for the vpn. I hear iptables may be required and I'm an iptables noob. On the left (Amazon), I have a 10. network. Box 1 is privately 10.254.110.A, publically IP 184.73.168.B. Netkey tunnel is up. Box 2 is publically 130.164.26.C, privately 130.164.0.D And my .conf is: conn ni type= tunnel authby= secret left= 10.254.110.A leftid= 184.73.168.B leftnexthop= %defaultroute leftsubnet= 10.254.0.0/32 right= 130.164.26.C rightid= 130.164.0.D rightnexthop= %defaultroute rightsubnet= 130.164.0.0/18 keyexchange= ike pfs= no auto= start keyingtries= 3 disablearrivalcheck=no ikelifetime= 240m auth= esp compress= no keylife= 60m forceencaps= yes esp= 3des-md5 I added a route to box 1 (130.164.0.0/18 via 10.254.110.A dev eth0) but that doesn't do it for predictable reasons, when I traceroute the traffic's still going "around" and not through the vpn. Routing table: 10.254.110.0/23 dev eth0 proto kernel scope link src 10.254.110.A 130.164.0.0/18 via 10.254.110.178 dev eth0 src 10.254.110.A 169.254.0.0/16 dev eth0 scope link metric 1002 Anyone know how to do the routing with a netkey ipsec tunnel where both sides are NATted? Thanks...

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  • IPSec Tunnel to Amazon EC2 - Netkey, NAT, and routing issue

    - by Ernest Mueller
    I'm working on getting an IPSec VPN working between Amazon EC2 and my on-premise. The goal is to be able to safely administer stuff, up/download data, etc. over that tunnel. I have gotten the tunnel up in openswan between a Fedora 12 instance with an elastic IP and a Cisco router that's also NATted. I think the ipsec part is OK, but I'm having trouble figuring out how to route traffic that way; there's no "ipsec0" virutal interface because on Amazon you have to use netkey and not KLIPS for the vpn. I hear iptables may be required and I'm an iptables noob. On the left (Amazon), I have a 10. network. Box 1 is privately 10.254.110.A, publically IP 184.73.168.B. Netkey tunnel is up. Box 2 is publically 130.164.26.C, privately 130.164.0.D And my .conf is: conn ni type= tunnel authby= secret left= 10.254.110.A leftid= 184.73.168.B leftnexthop= %defaultroute leftsubnet= 10.254.0.0/32 right= 130.164.26.C rightid= 130.164.0.D rightnexthop= %defaultroute rightsubnet= 130.164.0.0/18 keyexchange= ike pfs= no auto= start keyingtries= 3 disablearrivalcheck=no ikelifetime= 240m auth= esp compress= no keylife= 60m forceencaps= yes esp= 3des-md5 I added a route to box 1 (130.164.0.0/18 via 10.254.110.A dev eth0) but that doesn't do it for predictable reasons, when I traceroute the traffic's still going "around" and not through the vpn. Routing table: 10.254.110.0/23 dev eth0 proto kernel scope link src 10.254.110.A 130.164.0.0/18 via 10.254.110.178 dev eth0 src 10.254.110.A 169.254.0.0/16 dev eth0 scope link metric 1002 Anyone know how to do the routing with a netkey ipsec tunnel where both sides are NATted? Thanks...

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  • Configure Domino to use SMTP routing and hMailServer

    - by Sébastien Lachance
    I have been trying for a couple of days to set up a Domino 8.5 server. Basically, I want everything to be run inside a local network. Right now I can send email to other user in the Domino directory without any mail address. I am pretty new to all this stuff, so maybe the answer will be really obvious. What I need to do is be able to send a mail from somewhere else to a domino user that will be redirected to his account. On the Domino server, I also have hMailServer installed on port 25. I configured Domino to use port 26. I followed those step to get where I am now. -I have set the Fully qualified Internet host name to "preview.notes". -Smtp Listener task changed to Enabled to turn on the Listener so that the server can receive messages routed via SMTP routing -Setting up SMTP routing within the local Internet domain (http://www.h2l.com/help/help85%5Fadmin.nsf/f4b82fbb75e942a6852566ac0037f284/7f9738a49efc4f58852574d500097b01?OpenDocument) -I modified the person to use the [email protected] address. -I'm using the hMailServer (which have the local "preview.local" domain name) to send mail to [email protected]. When sending mail I got an error telling that the DNS is not set up correctly. Is using the Domino Smtp server instead of hMailServer will solve the problem? I can Telnet the Domino Smtp Server.

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  • Routing table on Linux not respected

    - by MRHaarmann
    I have a very specific problem, building a Linux VPN endpoint (with external VPN Gateway), which should route certain networks over the tunnel, others via default gateway. The Linux VPN should do a NAT on the outgoing connections for the VPN peers. Setup is as following: Internet gateway LAN 192.168.25.1/24 VPN Gateway LAN 10.45.99.2/24 (VPN tunnel 10.45.99.1 to net 87.115.17.40/29, separate connection to Internet) Linux VPN Router eth0 192.168.25.71/24 eth0:503 10.45.99.1/24 Default 192.168.25.1 route to 87.115.17.40/29 via 10.45.99.2 (send_redirects disabled, ip_forward enabled) Linux clients (multiple): eth0 192.168.25.x/24 Default 192.168.25.1 route to 87.115.17.40/29 via 192.168.25.71 Ping to the machines via tunnel from the VPN Router is working. Now I want to establish a routing from my clients over the VPN gateway and the client packet gets routed to 192.168.25.1 ! traceroute output shows the packets get routed to 192.168.25.71, but then to 192.168.25.1. So the route is not respected in forward ! IPTables and Routing: ip route show 87.115.17.40/29 via 10.45.99.2 dev eth0 10.45.99.0/24 dev eth0 proto kernel scope link src 10.45.99.1 192.168.25.0/24 dev eth0 proto kernel scope link src 192.168.25.71 default via 192.168.25.1 dev eth0 iptables -A INPUT -i eth0:503 -j REJECT iptables -t nat -A POSTROUTING -o eth0:503 -j MASQUERADE iptables -A FORWARD -i eth0:503 -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -s 192.168.25.0/24 -o eth0:503 -j ACCEPT So what is wrong with my setup ? The route is chosen correctly from localhost, but all the clients get forwarded to the Internet GW. thanks for helping, Marcus

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  • Routing / binding 128 IPs to one server

    - by Andrew
    I have a Ubuntu server with 128 ip's (static external ips 86.xx.xx.16), and I want to crawl pages thru different ip's. The gateway is xx.xxx.xxx.1, the main ip is xx.xxx.xxx.16, and the other 128 ip's are xx.xxx.xxx.129/255. I tried this configuration in /etc/network/interfaces but I doesn't work. It work if I remove the gateway for the aliases eth0:0 and eth0:1. I think this is routing problem. auto lo iface lo inet loopback auto eth0 auto eth0:0 auto eth0:1 iface eth0 inet static address xx.xxx.xxx.16 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:0 inet static address xx.xxx.xxx.129 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:1 inet static address xx.xxx.xxx.130 netmask 255.255.255.128 gateway xx.xxx.xxx.1 Also, please tell me how to "reset" every changes that I made in networking and routing. Update: I removed the gateway and now it works. I can reach the website thru all 128 ip's. But when I try to bind a socket connection in php to a specific ip I get no answer. socket_bind($sock, "xx.xxx.xx.xxx"); socket_connect($sock, 'google.com', 80); I tryed to use a sniffer to see the packets, and I see the packet sent from binded ip to google.com but the "connection" can't be established. I don't know anything about "route" command, but I have a feeling that this is the solution.

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  • IIS8 Application request routing

    - by JustDanyul
    Sorry for what is most likely NOT a very intelligent question, but my non-sysadmin brain is struggling to understand what is causing my problem. Basically, I wan't to enable reverse proxying on a IIS8 box. I read though this article: http://www.iis.net/learn/extensions/url-rewrite-module/reverse-proxy-with-url-rewrite-v2-and-application-request-routing And I've installed the ARR extension from here: http://www.iis.net/downloads/microsoft/application-request-routing Now, I enabled the proxying (as explained in the MS tutorial), and I felt the other setting as they where (again, as instructed in the tutorial). My rule looks like the following <rule name="Reverse Proxy to payroll" stopProcessing="true"> <match url="^mytest/(.*)" /> <action type="Rewrite" url="http://localhost:8282/{R:1}" /> </rule> But alas, it doesn't work. If I change it to a "normal" rewrite rule, as in <rule name="Reverse Proxy to payroll" stopProcessing="true"> <match url="^mytest/(.*)" /> <action type="Rewrite" url="/{R:1}" /> </rule> Then it works. So, it must differently be something with the reverse proxy. Any idea what gives?

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  • Two network interfaces and two IP addresses on the same subnet in Linux

    - by Scott Duckworth
    I recently ran into a situation where I needed two IP addresses on the same subnet assigned to one Linux host so that we could run two SSL/TLS sites. My first approach was to use IP aliasing, e.g. using eth0:0, eth0:1, etc, but our network admins have some fairly strict settings in place for security that squashed this idea: They use DHCP snooping and normally don't allow static IP addresses. Static addressing is accomplished by using static DHCP entries, so the same MAC address always gets the same IP assignment. This feature can be disabled per switchport if you ask and you have a reason for it (thankfully I have a good relationship with the network guys and this isn't hard to do). With the DHCP snooping disabled on the switchport, they had to put in a rule on the switch that said MAC address X is allowed to have IP address Y. Unfortunately this had the side effect of also saying that MAC address X is ONLY allowed to have IP address Y. IP aliasing required that MAC address X was assigned two IP addresses, so this didn't work. There may have been a way around these issues on the switch configuration, but in an attempt to preserve good relations with the network admins I tried to find another way. Having two network interfaces seemed like the next logical step. Thankfully this Linux system is a virtual machine, so I was able to easily add a second network interface (without rebooting, I might add - pretty cool). A few keystrokes later I had two network interfaces up and running and both pulled IP addresses from DHCP. But then the problem came in: the network admins could see (on the switch) the ARP entry for both interfaces, but only the first network interface that I brought up would respond to pings or any sort of TCP or UDP traffic. After lots of digging and poking, here's what I came up with. It seems to work, but it also seems to be a lot of work for something that seems like it should be simple. Any alternate ideas out there? Step 1: Enable ARP filtering on all interfaces: # sysctl -w net.ipv4.conf.all.arp_filter=1 # echo "net.ipv4.conf.all.arp_filter = 1" >> /etc/sysctl.conf From the file networking/ip-sysctl.txt in the Linux kernel docs: arp_filter - BOOLEAN 1 - Allows you to have multiple network interfaces on the same subnet, and have the ARPs for each interface be answered based on whether or not the kernel would route a packet from the ARP'd IP out that interface (therefore you must use source based routing for this to work). In other words it allows control of which cards (usually 1) will respond to an arp request. 0 - (default) The kernel can respond to arp requests with addresses from other interfaces. This may seem wrong but it usually makes sense, because it increases the chance of successful communication. IP addresses are owned by the complete host on Linux, not by particular interfaces. Only for more complex setups like load- balancing, does this behaviour cause problems. arp_filter for the interface will be enabled if at least one of conf/{all,interface}/arp_filter is set to TRUE, it will be disabled otherwise Step 2: Implement source-based routing I basically just followed directions from http://lartc.org/howto/lartc.rpdb.multiple-links.html, although that page was written with a different goal in mind (dealing with two ISPs). Assume that the subnet is 10.0.0.0/24, the gateway is 10.0.0.1, the IP address for eth0 is 10.0.0.100, and the IP address for eth1 is 10.0.0.101. Define two new routing tables named eth0 and eth1 in /etc/iproute2/rt_tables: ... top of file omitted ... 1 eth0 2 eth1 Define the routes for these two tables: # ip route add default via 10.0.0.1 table eth0 # ip route add default via 10.0.0.1 table eth1 # ip route add 10.0.0.0/24 dev eth0 src 10.0.0.100 table eth0 # ip route add 10.0.0.0/24 dev eth1 src 10.0.0.101 table eth1 Define the rules for when to use the new routing tables: # ip rule add from 10.0.0.100 table eth0 # ip rule add from 10.0.0.101 table eth1 The main routing table was already taken care of by DHCP (and it's not even clear that its strictly necessary in this case), but it basically equates to this: # ip route add default via 10.0.0.1 dev eth0 # ip route add 130.127.48.0/23 dev eth0 src 10.0.0.100 # ip route add 130.127.48.0/23 dev eth1 src 10.0.0.101 And voila! Everything seems to work just fine. Sending pings to both IP addresses works fine. Sending pings from this system to other systems and forcing the ping to use a specific interface works fine (ping -I eth0 10.0.0.1, ping -I eth1 10.0.0.1). And most importantly, all TCP and UDP traffic to/from either IP address works as expected. So again, my question is: is there a better way to do this? This seems like a lot of work for a seemingly simple problem.

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  • vestal_versions : problem with column named changes

    - by arkannia
    Hi, I am working with vestal version for 2 months. Everything was fine until this afternoon. I didn't done anything special(or i don't remembered...) but the code works fine on others computers... The problem is that i'm not able to save my model anymore: rails give me this error : ActiveRecord::DangerousAttributeError: changes is defined by ActiveRecord changes field is by default an activerecord method. With the console, the message is the next : ActiveRecord::DangerousAttributeError: changes is defined by ActiveRecord Here are my local gem files: abstract (1.0.0) actionmailer (3.0.0.beta3) actionpack (3.0.0.beta3) activemodel (3.0.0.beta3) activerecord (3.0.0.beta3) activeresource (3.0.0.beta3) activesupport (3.0.0.beta3) arel (0.3.3) builder (2.1.2) bundler (0.9.25, 0.9.24) crack (0.1.7) erubis (2.6.5) god (0.9.0) haml (3.0.1, 2.2.23) i18n (0.3.7) mail (2.2.0) memcache-client (1.8.3) memcached (0.17.7) mime-types (1.16) polyglot (0.3.1) rack (1.1.0) rack-mount (0.6.3) rack-test (0.5.3) rails (3.0.0.beta3) railties (3.0.0.beta3) rake (0.8.7) savon (0.7.8, 0.7.6) text-format (1.0.0) text-hyphen (1.0.0) thor (0.13.6, 0.13.4) treetop (1.4.5) tzinfo (0.3.20) And here my Gemfile source 'http://gemcutter.org' gem "rails", "3.0.0.beta3" gem "will_paginate", "3.0.pre" #gem 'nokogiri' #gem 'curb' #gem 'handsoap' gem 'savon' gem 'mysql' gem 'haml', '2.2.23' #gem 'haml', '3.0.1' gem 'hpricot' gem 'i18n', '> 0.3.5' gem 'i18n_routing' gem 'i18n_auto_scoping' gem 'handler301', :git => 'http://github.com/kwi/handler301.git' gem 'seo_meta_builder' gem 'vestal_versions' #gem 'paperclip', :git => 'git://github.com/thoughtbot/paperclip.git', :branch => 'rails3' ## Bundle edge rails: gem "rails", :git => "git://github.com/rails/rails.git" ## Bundle the gems you use: # gem "bj" # gem "hpricot", "0.6" # gem "sqlite3-ruby", :require => "sqlite3" # gem "aws-s3", :require => "aws/s3" ## Bundle gems used only in certain environments: # gem "rspec", :group => :test # group :test do # gem "webrat" # end If you have any suggestions to solve this issue, i'll be glad to hear them ! Thanks

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  • How to create a rails habtm that deletes/destroys without error?

    - by Bradley
    I created a simple example as a sanity check and still can not seem to destroy an item on either side of a has_and_belongs_to_many relationship in rails. Whenever I try to delete an object from either table, I get the dreaded NameError / "uninitialized constant" error message. To demonstrate, I created a sample rails app with a Boy class and Dog class. I used the basic scaffold for each and created a linking table called boys_dogs. I then added a simple before_save routine to create a new 'dog' any time a boy was created and establish a relationship, just to get things setup easily. dog.rb class Dog < ActiveRecord::Base has_and_belongs_to_many :Boys end boy.rb class Boy < ActiveRecord::Base has_and_belongs_to_many :Dogs def before_save self.Dogs.build( :name => "Rover" ) end end schema.rb ActiveRecord::Schema.define(:version => 20100118034401) do create_table "boys", :force => true do |t| t.string "name" t.datetime "created_at" t.datetime "updated_at" end create_table "boys_dogs", :id => false, :force => true do |t| t.integer "boy_id" t.integer "dog_id" t.datetime "created_at" t.datetime "updated_at" end create_table "dogs", :force => true do |t| t.string "name" t.datetime "created_at" t.datetime "updated_at" end end I've seen lots of posts here and elsewhere about similar problems, but the solutions are normally using belongs_to and the plural/singular class names being confused. I don't think that is the case here, but I tried switching the habtm statement to use the singular name just to see if it helped (with no luck). I seem to be missing something simple here. The actual error message is: NameError in BoysController#destroy uninitialized constant Boy::Dogs The trace looks like: /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:105:in const_missing' (eval):3:indestroy_without_callbacks' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/callbacks.rb:337:in destroy_without_transactions' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:229:insend' ... Thanks.

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  • BDD on Rails - Is the community more behind Shoulda or RSpec?

    - by Wayne M
    For a new application I want to start dabbling in BDD and I'm trying to decide between using RSpec or Thoughtbot's Shoulda. I like the macros that Shoulda uses, and the fact that it doesn't seem to reinvent the way Ruby/Rails does testing, but simply provides an add-on. On the other hand, the macros seem like a bit too much "magic" instead of being explicit about what you're testing (however I know from dabbling that it's annoying to write a dozen "should be invalid without xxx" two-liners on a model). To be honest I find writing specifications/tests for models to be trivially and almost boringly easy, but I find writing them for controllers to be insanely difficult because I'm never sure exactly what I should be testing or how to write it. I'm iffy on the subject of mocking and stubbing since I think they give you false assumptions (since you can just tell it to think it has whatever data you need or to pretend that Method X was called) and I know that RSpec makes heavy use of both of them. I like the documentation that RSPec produces but I'm creating an application for sale, not to give to a client so the pretty documentation isn't that useful. I like Cucumber but it seems like overkill (and yes I know it can be used with Shoulda). At this point is the Rails community in favor of RSpec or Shoulda?

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  • What is the right way to make a new XMLHttpRequest from an RJS response in Ruby on Rails?

    - by Yuri Baranov
    I'm trying to come closer to a solution for the problem of my previous question. The scheme I would like to try is following: User requests an action from RoR controller. Action makes some database queries, makes some calculations, sets some session variable(s) and returns some RJS code as the response. This code could either update a progress bar and make another ajax request. display the final result (e.g. a chart grahic) if all the processing is finished The browser evaluates the javascript representation of the RJS. It may make another (recursive? Is recursion allowed at all?) request, or just display the result for the user. So, my question this time is: how can I embed a XMLHttpRequest call into rjs code properly? Some things I'd like to know are: Should I create a new thread to avoid stack overflow. What rails helpers (if any) should I use? Have anybody ever done something similar before on Rails or with other frameworks? Is my idea sane?

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  • Pros/Cons of MySQL vs Postgresql for production Ruby on Rails environment?

    - by cakeforcerberus
    I will soon be switching from sqlite3 to either postgres or mysql. What should I consider when making this decision? Is mysql more suited for Rails than postgres in some areas and/or vice versa? Or, as I somewhat suspect, does it not really matter either way? Another factor that might play into my decision is the availability of tools to data pump my test data from the sqlite3 db to my new one. Is there anything that ActiveRecord provides natively to do this or any decent plugins/gems to help with this task? BONUS: How do I pronounce "Postgresql" and sound like I know what I'm talking about? :) Thanks Greg Smith for providing the following link that shows the most common pronunciations: http://www.postgresql.org/community/survey.33 UPDATE: Reference this question for more: http://stackoverflow.com/questions/110927/do-you-recommend-postgresql-over-mysql FYI: I ended up using MySQL. There is a neat plugin called yamldb that really saved me some time with the data transfer from my sqlite db to my new mysql one. Instructions on how to install and use it can be found here: http://accidentaltechnologist.com/ruby/change-databases-in-rails-with-yamldb/ Thanks Tom

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  • How do I create and use a junction table in Rails?

    - by Thierry Lam
    I have the following data: A post called Hello has categories greet Another post called Hola has categories greet, international My schema is: create_table "posts", :force => true do |t| t.string "name" t.datetime "created_at" t.datetime "updated_at" end create_table "categories", :force => true do |t| t.string "name" t.datetime "created_at" t.datetime "updated_at" end create_table "posts_categories", :force => true do |t| t.integer "post_id" t.integer "category_id" t.datetime "created_at" t.datetime "updated_at" end After reading the Rails guide, the most suitable relationship for the above seems to be: class Post < ActiveRecord::Base has_and_belongs_to_many :categories end class Category < ActiveRecord::Base has_and_belongs_to_many :posts end My junction table also seems to have a primary key. I think I need to get rid of it. What's the initial migration command to generate a junction table in Rails? What's the best course of action, should I drop posts_categories and re-create it or just drop the primary key column? Does the junction table have a corresponding model? I have used scaffold to generate the junction table code, should I get rid of the extra code? Assuming all the above has been fixed and is working properly, how do I query all posts and display them along with their named categories in the view. For example: Post #1 - hello, categories: greet Post #2 - hola, categories: greet, international

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  • GET params in ruby-on-rails project - best practices?

    - by Lynn C
    I've inherited a little rails app and I need to extend it slightly. It's actually quite simple, but I want to make sure I'm doing it the right way... If I visit myapp:3000/api/persons it gives me a full list of people in XML format. I want to pass param in the URL so that I can return users that match the login or the email e.g. yapp:3000/api/persons?login=jsmith would give me the person with the corresponding login. Here's the code: def index if params.size > 2 # We have 'action' & 'controller' by default if params['login'] @person = [Person.find(:first, :conditions => { :login => params['login'] })] elsif params['email'] @persons = [Person.find(:first, :conditions => { :email => params['email'] })] end else @persons = Person.find(:all) end end Two questions... Is it safe? Does ActiveRecord protect me from SQL injection attacks (notice I'm trusting the params that are coming in)? Is this the best way to do it, or is there some automagical rails feature I'm not familiar with?

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  • How to sort objects in a many-to-many relationship in ruby on rails?

    - by Kenji Kina
    I've been trying to deal with this problem for a couple of hours now and haven't been able to come up with a clean solution. It seems I'm not too good with rails... Anyway, I have the following: In code: class Article < ActiveRecord::Base has_many :line_aspects, :dependent => :destroy has_many :aspects, :through => :line_aspects #plus a name field end class LineAspect < ActiveRecord::Base belongs_to :article belongs_to :aspect end class Aspect < ActiveRecord::Base belongs_to :data_type has_many :line_aspects has_many :articles, :through => :line_aspects end Now, what I would like to do, is to sort these in two steps. First list of Articles by their Articles.name, and then inside sort them by Aspect.name (note, not the middleman). For instance, alphabetically (sorry if the notation is not correct): [{ article => 'Apple', line_aspects => [ {:value => 'red'}, #corresponding to the Attribute with :name => 'color' {:value => 'small'} #corresponding to the Attribute with :name => 'shape' ] },{ article => 'Watermelon', line_aspects => [ {:value => 'green'}, #corresponding to the Attribute with :name => 'color' {:value => 'big'} #corresponding to the Attribute with :name => 'shape' ] }] Again, note that these are ordered by the aspect name (color before shape) instead of the specific values of each line (red before green). (NOTE: My intention is to displaye these in a table in the view) I have not found a good way to do this in rails yet (without resorting to N queries). Can anyone tell me a good way to do it?

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  • Ruby on Rails 2.3.5: Populating my prod and devel database with data (migration or fixture?)

    - by randombits
    I need to populate my production database app with data in particular tables. This is before anyone ever even touches the application. This data would also be required in development mode as it's required for testing against. Fixtures are normally the way to go for testing data, but what's the "best practice" for Ruby on Rails to ship this data to the live database also upon db creation? ultimately this is a two part question I suppose. 1) What's the best way to load test data into my database for development, this will be roughly 1,000 items. Is it through a migration or through fixtures? The reason this is a different answer than the question below is that in development, there's certain fields in the tables that I'd like to make random. In production, these fields would all start with the same value of 0. 2) What's the best way to bootstrap a production db with live data I need in it, is this also through a migration or fixture? I think the answer is to seed as described here: http://lptf.blogspot.com/2009/09/seed-data-in-rails-234.html but I need a way to seed for development and seed for production. Also, why bother using Fixtures if seeding is available? When does one seed and when does one use fixtures?

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  • Good Starting Points for Optimizing Database Calls in Ruby on Rails?

    - by viatropos
    I have a menu in Rails which grabs a nested tree of Post models, each which have a Slug model associated via a polymorphic association (using the friendly_id gem for slugs and awesome_nested_set for the tree). The database output in development looks like this (here's the full gist): SQL (0.4ms) SELECT COUNT(*) AS count_id FROM "posts" WHERE ("posts".parent_id = 39) CACHE (0.0ms) SELECT "posts".* FROM "posts" WHERE ("posts"."id" = 13) LIMIT 1 CACHE (0.0ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 13 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 Slug Load (0.4ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 40 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 SQL (0.3ms) SELECT COUNT(*) AS count_id FROM "posts" WHERE ("posts".parent_id = 40) CACHE (0.0ms) SELECT "posts".* FROM "posts" WHERE ("posts"."id" = 13) LIMIT 1 CACHE (0.0ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 13 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 Slug Load (0.4ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 41 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 ... Rendered shared/_menu.html.haml (907.6ms) What are some quick things I should always do to optimize this from the start (easy things)? Some things I'm thinking now are: Can Rails 3 eager load the whole Post tree + associated Slugs in one DB call? Can I do that easily with named scopes or custom SQL? What is best practice in this situation? Not really thinking about memcached in this situation as that can be applied to much more than just this.

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  • How can I change Rails view code for site visitors using SSL?

    - by pjmorse
    My Rails app has some pages which are SSL-required and others which are SSL-optional. The optional pages use some assets which are served off-site (images from a vendor) which have both http and https URLs. I need to use https when the page is accessed via SSL to avoid the dreaded "this page contains both secure and insecure elements" warning. I've written code to return the image URLs as http by default and https if requested. My problem now is determining in the view how the request came in. request.ssl? doesn't work in views. I've tried using a before_filter which sets something like @ssl_request using request.ssl?, but that also always returns false. Is there a more elegant way to do this? The server stack is Nginx and Passenger. Other apps with Apache = Mongrel stacks pass an X_FORWARDED_PROTO header to tell Rails that SSL is or isn't being used; is it possible that Nginx/Passenger doesn't do this?

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