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  • Ruby on Rails - Belongs_to and Active Admin not creating foreign ID

    - by Milo
    I have the following setup: class Category < ActiveRecord::Base has_many :products end class Product < ActiveRecord::Base belongs_to :category has_attached_file :photo, :styles => { :medium => "300x300>", :thumb => "200x200>" } validates_attachment_content_type :photo, :content_type => /\Aimage\/.*\Z/ end ActiveAdmin.register Product do permit_params :title, :price, :slideshow, :photo, :category form do |f| f.inputs "Product Details" do f.input :title f.input :category f.input :price f.input :slideshow f.input :photo, :required => false, :as => :file end f.actions end show do |ad| attributes_table do row :title row :category row :photo do image_tag(ad.photo.url(:medium)) end end end index do column :id column :title column :category column :price do |product| number_to_currency product.price end actions end class ProductController < ApplicationController def create @product = Product.create(params[:id]) end end Every time I make a product item in activeadmin the category comes up empty. It wont populate the column category_id for the product. It just leaves it empty. What am I doing wrong?

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  • How much Ruby should I learn before moving to Rails?

    - by Kevin
    Just a quick question.. I can never get a definitive answer when googling this, either. Some people say you can learn Rails without knowing any Ruby, but at some point you'll run into a brick wall and wish you knew Ruby and will have to go back to learn it..and some say to learn the "basics" of Ruby before learning Rails and it will make your life that much easier.. My current knowledge is low. I'm not a beginner, but I'm not pro, either. I went through the Learn Python The Hard Way online book in about a month, but I stopped once I got to the OOP side of Python (I know booleans, elif/if/else/statements, for loops, while loops, functions) I agree with learning the "basics" of Ruby before learning Rails, but what exactly are the "basics" of Ruby? Would I need to learn the whole OOP side of Ruby before I went on to Rails? Or would I just need to learn the Ruby syntax up to where I learned Python (booleans, elif/if/else/statements, for loops, while loops, functions) before I went on to Rails? Thanks!

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  • Passenger (mod-rails) can't find libopenssl-ruby

    - by flintinatux
    Trying to build an nginx server with Phusion Passenger on Ubuntu 11.10 (hurray for the new version!). Running "passenger-install-nginx-module" outputs the following error: * OpenSSL support for Ruby... not found With the following suggestion to fix it: * To install OpenSSL support for Ruby: Please run apt-get install libopenssl-ruby as root. Running "sudo apt-get install libopenssl-ruby" yields the following output: Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'libruby' instead of 'libopenssl-ruby' libruby is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. A little research shows that libruby is a virtual package that provides libopenssl-ruby as part of the package. However, the passenger-install-nginx-module script still can't find it, and keeps throwing the same error. Help me, please! I'm in a little over my head on this one, and the google-the-error-code method that usually works is failing me today.

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  • Django vs Ruby on Rails [closed]

    - by Michal Gumny
    I know that this is not place for languages war, but my question is quite specific. I'm iOS developer and I have friend who is Android developer, we have idea to make some commercial project together, but we will need quite advaned back-end. We want to learn one of this two frameworks and their languages from scratch, so my question is what language is faster to learn, and write app, which is better for small start up

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  • Need advice on design in Ruby On Rails

    - by Elad
    For personal educational purposes I am making a site for a conference. One of the object that exist in a conference is a session, which has different states and in each state it has slightly different attributes: When submitted it has a speaker (User in the system), Title and abstract. When under review it has reviews and comments (in addition to the basic data) When accepted it has a defined time-slot but no reviewers anymore. I feel that it is not the best thing to add a "status" attributes and start adding many if statements... So I thought it would be better to have different classes for each state each with it's own validations and behaviors. What do you think about this design? Do you have a better idea? *I must add this out of frustration: I had several edits of the question, including one major change but no one actually gave any hint or clue on which direction should i take or where is a better place to ask this... Hardly helpful.

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  • Is there a good reference manual for ruby/rails?

    - by Kevin
    I've found switching from Java to Ruby/Rails to be very difficult. I feel like the rails books and websites that I've seen are program by example, and I have yet to see anything like a complete reference. In the java/spring world there is plenty of examples but also very thorough reference manuals. So even though I can get toy application xyz up and running in an afternoon with rails I'm apprehensive about doing anything of significance. I'm willing to admit that maybe this is because I've done java/spring for a few years and have near zero experience with ruby/rails. Just wondering if anyone else has run into this or if I'm missing something.

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  • What tools exist for designing layouts and pre-production templates for Rails 3 applications?

    - by rcd
    I develop Rails 3 applications, but prior to this, my background was a designer (typically making mockups in Photoshop and then breaking them down to HTML5/CSS3). Now, some great tools/templates exist for getting working layouts ready for Rails and other apps quickly, e.g., http://railsapps.github.com/rails-composer/. Many are using CSS Frameworks such as Twitter Bootstrap. I'd like to know whether there is a local app (for Mac) that can design layouts, much the way Dreamweaver would, but that are geared towards being utilized in a Twitter Bootstrap situation alongside Ruby (Rails) or Python apps, etc.

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  • how to run generate ajaxful_rating on Rails 3.0.9?

    - by user28931
    on Windows 7, i want to use gem ajaxful_rating to rate my topic in a website in Rails app. i can install this gem successfully by gem install ajaxful_rating refering to https://github.com/edgarjs/ajaxful-rating. the sample, script/generate ajaxful_rating user. i searched script/generate is available on Rails 2.x. but now i used Rails 3.0. It's somewhat difficult. i don't know how to generate. Does someone know it? or which rating gem do you use in Rails 3.0.x? thanks in advance.

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  • proper model for a multi site rails app

    - by JeffTaggarty
    Hi Guys, I am not sure if this is correct place to ask this question. My apologies if it is not. I need to create a web app where people will sign up, call it main-app.com, when they sign up my code will generate a usersite.my-app.com, they will login and only be able to manage their mini site. My question is, is it correct to model this out by creating a table for site, a table for user, users belong to site and site has many users. Then I should create a content table that belongs to user AND site? is that right? Thanks Jeff

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  • I cannot create Rails app on Netbeans 7.0. It hangs at the point 25%.

    - by user28931
    My development env. is, Win7 Ultimate Ruby 1.9.2p180 Rails 3.0.9 Gem 1.8.5 sqlite3 and mysql2 gems are installed My IDE is netbeans 7.0. ruby plugin for netbeans 7.0 is installed. i want to create a new rails app thru netbeans. but it hangs at the process of 25%. does someone hit the same issue? Is there a solution? From the output, i can see the rails app file structures are created. I know some of you may suggest me to use linux to develop rails app. that's an option. but i am newer to linux. i'd like to use win7 at present.

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  • How can I get ambethia's captcha plugin to work in rails 3?

    - by James
    I have installed ambethia's captcha plugin as a plugin in my rails 3 app. When I put the <%= recaptcha_tags %> in my view, it puts this on the page: <script type="text/javascript" src="http://api.recaptcha.net/challenge?k=my_key&error=expression"></script> <noscript> <iframe src="http://api.recaptcha.net/noscript?k=my_other_key" height="300" width="500" frameborder="0"></iframe><br/> <textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea> <input type="hidden" name="recaptcha_response_field" value="manual_challenge"></noscript> Is there a way that I can make this work in rails 3? I'd appreciate any help.

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  • Ruby Rails Mongrel Sever failing to serve OXS1.6

    - by Mark V
    Hi there I'm fairly new to Rails and the Mac, and doing my first deploy... I'm trying to set up my rails app on a brand new Apple mini-server running OXS1.6 (Snow Leopard). It is currently running fine on my new iMac i7 (same OS). I start mongrel with this command: mongrel_rails start -e production -p 3000 -d -a 127.0.0.1 --debug And it starts giving this output in the log/mongrel.log ** Daemonized, any open files are closed. Look at log/mongrel.pid and log/mongrel.log for info. ** Starting Mongrel listening at 127.0.0.1:3000 ** Installing debugging prefixed filters. Look in log/mongrel_debug for the files. ** Starting Rails with production environment... /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010. Use #requirement /Users/danadmin/ServiceApp/ServiceApp/app/helpers/input_grid_manager.rb:9: warning: already initialized constant ID_PREFIX /Users/danadmin/ServiceApp/ServiceApp/app/helpers/input_grid_manager.rb:10: warning: already initialized constant ADD_ID ** Rails loaded. ** Loading any Rails specific GemPlugins ** Signals ready. TERM => stop. USR2 => restart. INT => stop (no restart). ** Rails signals registered. HUP => reload (without restart). It might not work well. ** Mongrel 1.1.5 available at 127.0.0.1:3000 ** Writing PID file to log/mongrel.pid The output is the same on my dev iMac (including the warnings). The difference is that accessing http://127.0.0.1:3000 on my iMac serves up the app's login page. Where as on the mac mini-server accessing the same results in this error 500 text from mongrel: "We're sorry, but something went wrong." It's as if rails is not working. I'm pretty good at figuring things out if I have some log file messages to direct me, but mongrel.log has no error message (the output remains the same as above), and the log/production.log is empty (which makes me think rails has not started?). My gems are all the same versions between machines and so is the app code; and there are no clues I can see in any of the mongrel_debug logs, except that rails.log on the mac mini-server and the iMac are different. After a start and single access, first is the rails.log from the mac mini-server: D, [2010-04-15T13:45:34.870406 #6914] DEBUG -- : TRACING ON Thu Apr 15 13:45:34 +1200 2010 Thu Apr 15 13:46:08 +1200 2010 REQUEST / --- !map:Mongrel::HttpParams SERVER_NAME: 127.0.0.1 HTTP_ACCEPT: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 HTTP_CACHE_CONTROL: max-age=0 HTTP_HOST: 127.0.0.1:3000 HTTP_USER_AGENT: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_0; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.9 Safari/533.2 REQUEST_PATH: / SERVER_PROTOCOL: HTTP/1.1 HTTP_ACCEPT_LANGUAGE: en-US,en;q=0.8 REMOTE_ADDR: 127.0.0.1 PATH_INFO: / SERVER_SOFTWARE: Mongrel 1.1.5 SCRIPT_NAME: / HTTP_VERSION: HTTP/1.1 REQUEST_URI: / SERVER_PORT: "3000" HTTP_ACCEPT_CHARSET: ISO-8859-1,utf-8;q=0.7,*;q=0.3 REQUEST_METHOD: GET GATEWAY_INTERFACE: CGI/1.2 HTTP_ACCEPT_ENCODING: gzip,deflate,sdch HTTP_CONNECTION: keep-alive While on my iMac it seems the same except for the addition of the HTTP_COOKIE and the HTTP_IF_NONE_MATCH, here is rails.log from my iMac # Logfile created on Thu Apr 15 13:41:42 +1200 2010 by logger.rb/22285 D, [2010-04-15T13:41:42.934088 #2070] DEBUG -- : TRACING ON Thu Apr 15 13:41:42 +1200 2010 Thu Apr 15 13:42:05 +1200 2010 REQUEST / --- !map:Mongrel::HttpParams SERVER_NAME: 127.0.0.1 HTTP_ACCEPT: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 HTTP_HOST: 127.0.0.1:3000 HTTP_USER_AGENT: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_3; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.9 Safari/533.2 REQUEST_PATH: / SERVER_PROTOCOL: HTTP/1.1 HTTP_IF_NONE_MATCH: "\"216cc63ce3c1f286ef8dd4f18f354f6e\"" HTTP_ACCEPT_LANGUAGE: en-US,en;q=0.8 REMOTE_ADDR: 127.0.0.1 PATH_INFO: / SERVER_SOFTWARE: Mongrel 1.1.5 SCRIPT_NAME: / HTTP_COOKIE: _ServiceApp_session=BAh7DDonY3VzdG9tZXJfbGlzdF9maWx0ZXJfam9iX3N0YXR1c19pZGn6Og9zZXNzaW9uX2lkIiU0ZTk1ZWZjMmViMGU3NjE2YzA0NDc2YTkxYzJlNDZiOToaY3VycmVudF9jdXN0b21lcl9uYW1lIilUSEUgQ1VTVE9NRVIgTkFNRSBORUVEUyBUTyBCRSBMT0FERUQ6EF9jc3JmX3Rva2VuIjFuT1JMUWk0NlZrWlM3c2lUN3BaWCs5NkhRajhxYnFwRnhzVHVTWXEvUWY0PToZam9iX2xpc3RfZmlsdGVyX3RleHQiADogam9iX2xpc3RfZmlsdGVyX2VtcGxveWVlX2lkafo6HmN1c3RvbWVyX2xpc3RfZmlsdGVyX3RleHQiAA%3D%3D--d01bc5d0b457ad524d16cb3402b5dfed9afce83d HTTP_VERSION: HTTP/1.1 REQUEST_URI: / SERVER_PORT: "3000" HTTP_ACCEPT_CHARSET: ISO-8859-1,utf-8;q=0.7,*;q=0.3 REQUEST_METHOD: GET GATEWAY_INTERFACE: CGI/1.2 HTTP_ACCEPT_ENCODING: gzip,deflate,sdch HTTP_CONNECTION: keep-alive Any direction or ideas would be greatly appreciated. Thanks.

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  • Most useful Rails plugins, Ruby libraries and Ruby gems?

    - by Srinivas Iyer
    I have seen many sites which provide the whole list of Rails plugins, Ruby libraries and Ruby gems, but we hardly use few of them and some may not suit our requirement and we spend a whole lot of time searching for useful plugins which suits our requirement. I have created this poll, people can post useful libraries, gems and plugins which they have come across. It would be great help for newbies like me and to the entire Ruby on Rails community. Note: to keep this poll as useful as possible, please remember: Post only one library, gem, or plugin per answer Mention the name of the library, gem, or plugin which you find it useful. URL of the location of the resource We don't want duplicate answers, so before posting check if the library has been mentioned already. Thanks

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  • How do I run a ruby script, that I put in my /lib/tasks/ directory in my Rails app, once?

    - by marcamillion
    Eventually I would like to get to setting it up as a Rake task and do a cron job, but for right now...all I want to do is take my ruby script that used to work as a standalone script and have it work within my Rails app. I renamed the file to be .rake instead of .rb and tried doing rake my_script at the command-line, but that gave me this error message: rake aborted! Don't know how to build task 'my_script' (See full trace by running task with --trace) How do I run this script within my Rails environment? This is the first time I am doing something like this, so any assistance would be greatly appreciated. Thanks.

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  • How can I calculate data for a boxplot (quartiles, median) in a Ralis app on Heroku? ( Heroku uses P

    - by hadees
    I'm trying to calculate the data needed to generate a box plot which means I need to figure out the 1st and 3rd Quartiles along with the median. I have found some solutions for doing it in Postgresql however they seem to depend on either PL/Python or PL/R which it seems like Heroku does not have either enabled for their postgresql databases. In fact I ran "select lanname from pg_language;" and only got back "internal". I also found some code to do it in pure ruby but that seems somewhat inefficient to me. I'm rather new to Box Plots, Postgresql, and Ruby on Rails so I'm open to suggestions on how I should handle this. There is a possibility to have a lot of data which is why I'm concerned with performance however if the solution ends up being too complex I may just do it in ruby and if my application gets big enough to warrant it get my own Postgresql I can host somewhere else. *note: since I was only able to post one link, cause I'm new, I decided to share a pastie with some relevant information

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  • PostgreSQL automatic backup

    - by Ragnar123
    I have been trying to set up a backup script on a windows server. I have used pgAgent (scheduling for pgAdmin), to run the backup script. No problems with the backup script. However, my jobs are not running like they should. I have set both the schedule, and the steps. I am fairly certain, that I am running the service under a wrong user or a user without the required permissions. I run the service like this: "C:\Program Files\pgAdmin III\pgAgent" INSTALL pgAgent -u postgres -p secret hostaddr=127.0.0.1 dbname=pgadmin user=postgres And I get an error, telling me that there was an error with the login information, though I know it's correct. When I go under services (controlpanel -- administration -- services), I am able to start the service with the local user. Can this be the problem? Where can I see or change the permissions on the postgres user?

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  • Postgresql 9.2 where is the initdb located on Ubuntu

    - by thanikkal
    I am trying to install postgres on EC2 / EBS. I am following this article and stuck at the following step. sudo su - su postgres - /usr/pgsql-9.0/bin/initdb -D /pgdata I cant find the initdb command located at the stated location, matter of fact i cant find the pgsql* directory at all under /usr folder. Was this changed for Postgres 9.2 or is there an alternate command that would help me initdb? edit 1: I know the folder pgsql-9.0 is version specific, so i was expecting to see more like pgsql-9.2 or similar.

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  • OpenX : mySql VS PostgreSQL

    - by Andreas Grech
    I have been using OpenX's AdServer with mySql as a backend, and since OpenX allows one to choose between mysql and postgres, I was wondering if anyone ever used Postgres and wished to talk about their experience with it here. Also, is there anyone who maybe tried using OpenX with both and can offer a comparison between the databases ? I am asking this question because I was having some trouble recently with mySql because some tables crashed occasionally and proved problematic because of the overhead they generated; and as a consequence of this, Statistics where not being generated.

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  • Using pg_connect() with wamp server and postgresql

    - by northlandiguana
    Help! I am trying to connect to a Postgres database and can't get the server to connect. When I execute this php script: $conn = pg_connect("dbname=wikimap user=postgres password=postgis host=localhost port=54321"; if (!$conn) { echo "Not connected : " . pg_error(); exit; } I get this error: <b>Fatal error</b>: Call to undefined function pg_connect() in <b>C:\wamp\www\wikimap\php\pgis.php</b> on line <b>33</b><br /> I have made sure the php_pgsql and php_pdo_pgsql extensions are enabled in the wamp menu and php.ini, and I've read through other topics in this forum and others about connecting wamp to postgres, messing with the httpd.config file and php.ini file and copying libpq.dll between bins, all to no avail. I've been working on this for hours and can't figure out how to get pg_connect to work. Any ideas???

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  • Hyperthreading vs. SQL Server & PostgreSQL

    - by IanC
    I have read that hyperthreading is a "performance killer" when it comes to DBs. However, what I read didn't state which CPUs. Further, it mostly indicated that I/O was "cut to < 10% performance". That logically doesn't make sense since I/O is primarily a function of controllers and disks, not CPUs. But then no one ever said bugs made sense. What I read also stated that SQL Server could put two parallel query ops onto 1 logical core (2 threads), thereby degrading performance. I have a hard time believing SQL Server's architects would have made such an obvious miscalculation. Does anyone have and data on how hyperthreading on current generation CPUs affects either of the RDBMSs I mentioned?

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  • Config postGreSQL pg_hba.conf restric role access

    - by Mathias
    Hello postgre experts. I am completely new to the game but need the following: I Create a new role with login. Let's say: User1 I then create a Database 'User1Database' and set User1 as the owner. User1 has no rights to do anything except for access. Now when I connect using User1 it somehow has access to all databases. I then learned I neeed to write something in here. User1 should have global access to User1Database and absolutely no access to anything else. What lines do I need to add to my pg_hba file? Currently it looks like this: # IPv4 local connections: host all all 127.0.0.1/32 md5 # IPv6 local connections: host all all ::1/128 md5 host all all 0.0.0.0/0 md5 Hope someone can write me the exact lines and explain them to me.

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  • simple script to backup PostgreSQL database

    - by Mick
    Hello I write simple batch script to backup postgeSQL databases, but I find one strange problem whether the pg_dump command can specify a password? There is batch script: REM script to backup PostgresSQL databases @ECHO off FOR /f "tokens=1-4 delims=/ " %%i IN ("%date%") DO ( SET dow=%%i SET month=%%j SET day=%%k SET year=%%l ) SET datestr=%month%_%day%_%year% SET db1=opennms SET db2=postgres SET db3=sr_preproduction REM SET db4=sr_production ECHO datestr is %datestr% SET BACKUP_FILE1=D:\%db1%_%datestr%.sql SET FIlLENAME1=%db1%_%datestr%.sql SET BACKUP_FILE2=D:\%db2%_%datestr%.sql SET FIlLENAME2=%db2%_%datestr%.sql SET BACKUP_FILE3=D:\%db3%_%datestr%.sql SET FIlLENAME3=%db3%_%datestr%.sql SET BACKUP_FILE4=D:\%db14%_%datestr%.sql SET FIlLENAME4=%db4%_%datestr%.sql ECHO Backup file name is %FIlLENAME1% , %FIlLENAME2% , %FIlLENAME3% , %FIlLENAME4% ECHO off pg_dump -U postgres -h localhost -p 5432 %db1% > %BACKUP_FILE1% pg_dump -U postgres -h localhost -p 5432 %db2% > %BACKUP_FILE2% pg_dump -U postgres -h localhost -p 5432 %db3% > %BACKUP_FILE3% REM pg_dump -U postgres -h localhost -p 5432 %db4% > %BACKUP_FILE4% ECHO DONE ! Please give me advice Regards Mick

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  • Disable disk caches in AWS EBS for PostgreSQL?

    - by Alexandr Kurilin
    It's my understanding that, without correctly disabling OS-level and drive-level caching, there is a chance that in case of system failure the Write-Ahead Log might not be saved correctly and in fact might get corrupted, possibly preventing data recovery. I've already made sure that wal_sync_method=fdatasync however I was unable to make any configuration changes with hdparm since I get the following: $ sudo htparm -I /dev/xvdf /dev/xvdf: HDIO_DRIVE_CMD(identify) failed: Invalid argument Looks like that option is not available in the kind of setup you get in EC2. Am I missing anything here? Are there any other obvious caches I have to disable to ensure the WAL's safety?

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  • Configuration Tuning for PostgreSQL 9.1 PostGIS 1.5 Ubuntu 12.04 Server

    - by Martin
    My server performance is poor. At times SSH, top, and other features or commands are very slow to respond, taking several seconds or more. A query that normally takes 5 minutes can sometimes take 30 minutes. The database is mostly being used to do a spatial query (grid and summarize) on approximately 500GB of stored data spread between 4 tables. Restarting the server works as a temporary fix, but cannot be used as a long term solution. Any suggestions for how to diagnose and solve my performance issues? Hardware and Configuration: 3.3 GHz Intel quad core i5 16 GB DDR3 RAM 6 TB software RAID 10 (6 x 2 TB drives) Ubuntu 12.04 64-bit Postgres 9.1 PostGIS 1.5

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