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  • How to avoid OCIError in rails application?

    - by qichunren
    OCIError (ORA-12541: TNS:no listener): oci8.c:270:in oci8lib.so /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb:223:in new' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb:223:innew_connection' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb:328:in initialize' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb:24:innew' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb:24:in initialize' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_connection.rb:9:innew' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_connection.rb:9:in create' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connection_adapters/oracle_enhanced_adapter.rb:50:inoracle_enhanced_connection' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:291:in send' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:291:inconnection=' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:259:in retrieve_connection' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:78:inconnection' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:1063:in table_exists?' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:1153:ininspect' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/core_ext/class/inheritable_attributes.rb:131:in to_proc' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:426:incollect' It seems that rails app lost oracle connection,how to avoid this in application controller: def rescue_action_in_public(exception) I use def rescue_action_in_public(exception) case exception.class.to_s when "OCIError" # my solution end It still throw me 500.html

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  • What is the best way to route a static controller in Rails?

    - by yuval
    I have a static_controller that is in charge of all the static pages in the site and works as follows in routes.rb: map.connect ':id', :controller => 'static', :action => 'show' I have a static page called about that among other information, has a contact form. I currently have a contacts_controller that is in charge of inserting the contact information to the database. Inside my routes.rb file, I have: map.resources :contacts My contact form (simplified) looks like this: <% form_for @contact do |f| %> <p class="errors"><%= f.error_messages %></p> <p> <%= f.label :first_name %> <%= f.text_field :first_name %> </p> <p class="buttons"><%= f.submit %></p> <% end %> Which in turn submits to the create action of my contacts_controller. My create action looks like this: def create @contact = Contact.new(params[:contact]) if @contact.save flash[:notice] = "Email delivered successfully." end redirect_to "about" end The problem is, is the that when I redirect back to my about page the error_messages for the form get lost (since the error_messages for the form only exist for one request, and that request ends upon redirect). How would I go about preserving the error_messages and still linking the users back to the about static url? Would a session/flash be sufficient (if so, what code would I use to pass error messages) or am I going about this whole thing wrong? Thanks!

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  • Computer science final year project ideas

    - by roul
    I'm a Computer Science undergraduate student in UK and should be deciding the subject of my final year project soon. The school is pretty flexible with the subject... "The topic can be any area of the subject which is of mutual interest to both the student and supervisor. Topics can range from purely theoretical studies to practical work building a system for some third party, although most projects aim to provide a balance between the theoretical and practical aspects of the subject." ...so I'm a bit lost since I want to do something in software engineering but have no idea what (subject) or with what (languages)! :) a) Languages: I've had experience with Java, C# and ASP.NET mostly but I would definitely be interested in learning new languages/frameworks. I'm kind of drawn by the idea of dynamic languages at the moment so IronPython seems likely. b) Subject: Anything that will keep me interested through the year and will give me the opportunity to learn a lot of stuff. Maybe something that has to do with music, or a fancy website, or a website about music :P anything really. Open to any thoughts/ideas, geeky or cool! Edit: Professors do usually supervise projects in their research areas but I currently have the choice to approach any of them according to my interest - whatever that is.

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  • Computer science textbooks

    - by Barrett Conrad
    I would like to try the book question a little bit differently. My goal is to know what the community thinks are the quintessential computer science textbooks. <beginsadstory>I lost all of my computer science and math books from college in Hurricane Katrina in 2005. I greatly miss having my familiar tomes to refer to when topics and problems come up, so I am looking to rebuild my library.<endsadstory> What are your recommendations for the best examples of academic caliber books for the field of computer science and its associated mathematics? I am looking for books on subjects like computational theory, programming languages, compilers, operating systems, algorithms and so on. Don't limit your suggestions to your textbooks only. If there is a book you have read that covers computer science or a related math in a formal way, but is not strictly a textbook, I would be love to hear about them as well. Finally, for the sake of creating a good reference for all of us, may I suggest posting one book per answer so they can be rated individually.

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  • How to create X509 self signed certificate for use in Apache Tomcat

    - by DaveJohnston
    I have a Java application that runs on Windows Mobile devices using a 3rd Party JVM. The application communicates with an Apache Tomcat server over HTTP. We have also used HTTPS for some connections and the certificates were created using the Sun keytool utility. First a keystore was created using genkey, then the certificate exported using export and finally that was imported into another keystore using import. The file created by genkey was loaded into the Apache server and the keystore created using import was loaded into the JVM on the PDA. Everything works as expected. I am now working with a new JVM on the PDA and (for whatever reason) I have established that this JVM requires the keystore to be in X509 (DER) format. I started working on this about a month ago and had it working, but stupidly never wrote down the steps I took, and now I can't for the life of me remember what I did. I seem to remember using openssl but other than that I am totally lost. Anything I create now using openssl and try to load into Apache causes an error at startup (Invalid Keystore Format) so I am probably missing something out entirely. Does anyone have any ideas how I should be going about creating this self-signed X509 certificate that can be loaded into Apache server and JVM running on a PDA?

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  • SQL - Count grouped entries and then get the max values grouped by date

    - by Marcus
    hello, I am out of any logic how to write the right sql statment. I've got a sqlite table holding every played track in a row with played date/time Now I will count the plays of all artists, grouped by day and then find the artist with the max playcount per day. I used this Query SELECT COUNT(ARTISTID) AS artistcount, ARTIST AS artistname,strftime('%Y-%m-%d', playtime) AS day_played FROM playcount GROUP BY artistname to get this result "93"|"The Skygreen Leopards"|"2010-06-16" "2" |"Arcade Fire" |"2010-06-15" "2" |"Dead Kennedys" |"2010-06-15" "2" |"Wolf People" |"2010-06-15" "3" |"16 Horsepower" |"2010-06-15" "3" |"Alela Diane" |"2010-06-15" "46"|"Motorama" |"2010-06-15" "1" |"Ariel Pink's Haunted" |"2010-06-14" I tried then to query this virtual table but I always get false results in artistname. SELECT MAX(artistcount), artistname , day_played FROM ( SELECT COUNT(ARTISTID) AS artistcount, ARTIST AS artistname,strftime('%Y-%m-%d', playtime) AS day_played FROM playcount GROUP BY artistname ) GROUP BY strftime('%Y-%m-%d',day_played) result in this "93"|"lilium" |"2010-06-16" "46"|"Wolf People"|"2010-06-15" "30"|"of Montreal"|"2010-06-14" but the artist name is false. I think through the grouping by day, it just use the last artist, or so. I tested stuff like INNER JOIN or GROUP BY ... HAVING in trial and error, I read examples of similar issues but always get lost in columnnames and stuff (I am a bit burned out) I hope someone can give me a hint. thanks m

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  • To Ajax or Not to Ajax a listing page

    - by kaivalya
    Here i am talking about product listing pages where there are multiple filters that filter the list of products appearing on the page like product types, categories price range etc. I have done such pages using both ajax and no ajax way in the past. What I like about using ajax in such page is that, when filters are selected I only update the section that contains the product list. There is no need to refresh the whole page which could end up re-loading the images on top bar, banners etc and slow down the user performance. Ajax way in my opinion becomes more compact and responsive from user experience. Down side for ajax route for me is; since filter states are not maintained in the URL I end up maintaining them on the server. This becomes complicated if I want to handle multi window scenarios and it is also costly to maintain such state on server memory for each session. Not using ajax and simply keeping all filter values on url and refreshing the page is quite simple but the luxury of refreshing only the pane that really needs to be refreshed is lost. Lately I am seeing a lot of large scale e-commerce sites that are using non-ajax approach on their listing pages and this is making me question one more time if it might be more efficient to build non-ajax listing make due to the long term maintenance ease and sacrifice a little bit from user experience. I am about to start implementing a new listing page for a product which I have the flexibility to go either way and I would appreciate your inputs.

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  • How to set up Hierarchical Zend Rest Routes?

    - by Kenji Baheux
    With the Zend Framework, I am trying to build routes for a REST api on resources organized in the following pattern: http://example.org/users/ http://example.org/users/234 http://example.org/users/234/items http://example.org/users/234/items/34 How do I set up this with Zend_Rest_Route? Here is how I have setup the route for the users resource (users/:id) in my bootstrap.php file: $this->bootstrap('frontController'); $frontController = Zend_Controller_Front::getInstance(); $restRoute = new Zend_Rest_Route($frontController); $frontController->getRouter()->addRoute('default', $restRoute); [As far as I understand, this is a catch all route so users/324/items/34 would results in parameters set as id=324 and items=34 and everything would be mapped to the Users (front module) Model. From there I guess I could just test for the items parameter and retrieve the item #34 for user #324 on a get request.]<=== I just checked it and it doesn't seems to work like that: Acessing /users/234/items/43 and var_dump($this->_getAllParams()); in the get action of the rest controller results in the following output: array(4) { ["controller"]=> string(5) "users" ["action"]=> string(3) "get" [2]=> string(5) "items" ["module"]=> string(7) "default"] } Somehow both ids got lost... Anyone?

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  • Using T4 templates to add custom code to EF4 generated entities?

    - by David Veeneman
    I am getting started with Entity Framework 4, using model-first development. I am building a simple WPF demo app to learn the framework. My app has two entities, Topic and Note. A Topic is a discussion topic; it has Title, Text, and DateRevised properties. Topic also has a Notes collection property. a Note has DateCreated and Text properties. I have used EF4 to create an EDM and data store for the app. Now I need to add just a bit of intelligence to the entities. For example, the property setter for the Topic.Text property needs to update the Topic.DateRevised property, and a Note needs to set its DateCreated property when it is instantiated--pretty simple stuff. I assume that I can't modify the generated classes directly, because my code would be lost if the entities are re-generated. Is this the sort of thing that I can implement by modifying the T4 template that EF4 uses to generate the entities? In other words, can a T4 template be modified to add my code for performing these tasks to the entities that it generates? Can you refer me to a good tutorial or explanation of how to get started? Most of what I have found so far talks about how to add a tt file to an EDM, so I can do that. What I am looking for is a resource that I can use to get to the next level, assuming that a T4 template can be used to customize generated entities as I have described. Thanks for your help.

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  • RIA Services: Inserting multiple presentation-model objects

    - by nlawalker
    I'm sharing data via RIA services using a presentation model on top of LINQ to SQL classes. On the Silverlight client, I created a couple of new entities (album and artist), associated them with each other (by either adding the album to the artist's album collection, or setting the Artist property on the album - either one works), added them to the context, and submitted changes. On the server, I get two separate Insert calls - one for the album and one for the artist. These entitites are new so their ID values are both set to the default int value (0 - keep in mind that depending on my DB, this could be a valid ID in the DB) because as far as I know you don't set IDs for new entities on the client. This all would work fine if I was transferring the LINQ to SQL classes via my RIA services, because even though the Album insert includes the Artist and the Artist insert includes the Album, both are Entities and the L2S context recognizes them. However, with my custom presentation model objects, I need to convert them back to the LINQ to SQL classes maintaining the associations in the process so they can be added to the L2S context. Put simply, as far as I can tell, this is impossible. Each entity gets its own Insert call, but there's no way you can just insert the one entity because without IDs the associations are lost. If the database used GUID identifiers it would be a different story because I could set those on the client. Is this possible, or should I be pursuing another design?

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  • ASP.NET/C# - Deserialize XML, XSD.exe created multiple classes

    - by Barryman9000
    I'm trying to deserialize some XML (returned from a web service) into an object that I created using XSD.exe. The XSD executable created a .CS file with a different partial class for each parent node in the XML. For Example, the beginning of the XML looks like this (why can't I post xml here? sorry, this is ugly): <disclaimer><notificationDescription>Additional charges will apply.</notificationDescription></disclaimer><quote><masterQuote></masterQuote></quote> And the Class generated by the XSD.exe has a partial class named disclaimer with a get; set; string for notificationDescription. And another partial class for quoteMasterQuote with the corresponding child nodes as public strings. How can I deserialize this XML file into multiple classes? I found this code, but it seems like it'll only work for one object. public static PricingResponse2 DeSerialize(string _xml) { PricingResponse2 _resp = new PricingResponse2(); StringReader _strReader = new StringReader(_xml); XmlSerializer _serializer = new XmlSerializer(_resp.GetType()); XmlReader _xmlReader = new XmlTextReader(_strReader); try { _resp = (PricingResponse2)_serializer.Deserialize(_xmlReader); return _resp; } catch (Exception ex) { string _error = ex.Message; throw; } finally { _xmlReader.Close(); _strReader.Close(); _strReader.Dispose(); } } This is the first time I've tried this, so I'm a little lost.

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  • Django Comments and Rating Systems

    - by Patrick
    Hi Folks, I am looking for blogging and comments system that can smoothly integrate with my Django sites, I found there is a lot in the Net and get lost a bit, and I don't have much experience on this. Hope you guys can give me some suggestion. Here is the things that I would like to have: Tag Clouds, Articles Archive (by months/by years), Articles Rating (e.g. with Stars or customize icons), Comments to the particular Topic/Articles, Sub-Comments of a particular comments (i.e. following up comments) Blogs/Articles Searching Able to relate other articles that is relevant (i.e. follow up Articles) Pagination of the comments if get too long OpenIDs supports (e.g. facebook, hotmail, blogger, twitter...etc) Support login before user can comments Able to retrieve Blogs' Header and customized the display order Able to subscribe this article to RSS Able to Email this to friends (this may not belongs to the comments system) If I missed some common functions, please let me know, the comments system I am looking for should do most jobs that those popular comments system should do in the web, e.g. WordsPress. Thank you so much everyone. Have a nice day.

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  • ifconfig networking telnet

    - by jhon
    Hi guys, I'm newbie around networking, I have a question: what I want is to telnet a specific IP/server, let us say 192.168.128.1 then, I try $telnet 192.168.128.1 Trying... and that's all.. I never get connected one of my friends made some script that "fixes" it, AFTER running it I was able to connect to the server using $telnet 192.168.128.1 $ user: unfortunately I lost that script, so I'm here requesting your help. Reading my old notes, I remember that the script performed some modification to the entries listed by ifconfig -a, I also have the ifconfig's output (copy & paste) $ ifconfig -a adapter0: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN> inet 192.168.128.150 netmask 0xffffff00 broadcast 192.168.128.255 tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0 adapter1: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN> inet 192.168.251.150 netmask 0xffffff00 broadcast 192.168.251.255 tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0 adapter2: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN> inet 192.168.250.150 netmask 0xffffff00 broadcast 192.168.250.255 tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0 lo0: flags=e08084b<UP,BROADCAST,LOOPBACK,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT> inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255 inet6 ::1/0 tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1 more than commands, I'm looking for some explanation why does "adding/changing" those entries enables me to connect to the server. I do not see the server ip (i.e 192.168.128.1) listed above. thanks

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  • Showing/hiding a JPopupMenu from a JButton; FocusListener not working?

    - by M. Joanis
    Hi everyone, I needed a JButton with an attached dropdown style menu. So I took a JPopupMenu and attached it to the JButton in the way you can see in the code below. What it needs to do is this: show the popup when clicked hide it if clicked a second time hide it if an item is selected in the popup hide it if the user clicks somewhere else in the screen These 4 things work, but because of the boolean flag I'm using, if the user clicks somewhere else or selects an item, I have to click twice on the button before it shows up again. That's why I tried to add a FocusListener (which is absolutely not responding) to fix that and set the flag false in these cases. Here are the listeners: (It's in a class extending JButton, so the second listener is on the JButton.) // Show popup on left click. menu.addFocusListener(new FocusListener() { @Override public void focusLost(FocusEvent e) { System.out.println("LOST FOCUS"); isShowingPopup = false; } @Override public void focusGained(FocusEvent e) { System.out.println("GAINED FOCUS"); } }); addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { System.out.println("isShowingPopup: " + isShowingPopup); if (isShowingPopup) { isShowingPopup = false; } else { Component c = (Component) e.getSource(); menu.show(c, -1, c.getHeight()); isShowingPopup = true; } } }); I've been fighting with this for way too long now. If someone can give me a clue about what's wrong with this, it would be great! Thanks!

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  • Javascript "Member not found" error in IE8

    - by Steven
    I'm trying to debug the following block of Javascript code to see what the issue is. I'm getting an error that says "Member not found" on the line constructor = function() { in the extend:function() method. I'm not very good with Javascript, and I didn't write this, so I'm kind of lost on what the issue is. The error only occurs in IE8, it works fine in IE7 and Firefox. var Class = { create: function() { return function() { if(this.destroy) Class.registerForDestruction(this); if(this.initialize) this.initialize.apply(this, arguments); } }, extend: function(baseClassName) { constructor = function() { var i; this[baseClassName] = {} for(i in window[baseClassName].prototype) { if(!this[i]) this[i] = window[baseClassName].prototype[i]; if(typeof window[baseClassName].prototype[i] == 'function') { this[baseClassName][i] = window[baseClassName].prototype[i].bind(this); } } if(window[baseClassName].getInheritedStuff) { window[baseClassName].getInheritedStuff.apply(this); } if(this.destroy) Class.registerForDestruction(this); if(this.initialize) this.initialize.apply(this, arguments); } constructor.getInheritedStuff = function() { this[baseClassName] = {} for(i in window[baseClassName].prototype) { if(!this[i]) this[i] = window[baseClassName].prototype[i]; if(typeof window[baseClassName].prototype[i] == 'function') { this[baseClassName][i] = window[baseClassName].prototype[i].bind(this); } } if(window[baseClassName].getInheritedStuff) { window[baseClassName].getInheritedStuff.apply(this); } } return constructor; }, objectsToDestroy : [], registerForDestruction: function(obj) { if(!Class.addedDestructionLoader) { Event.observe(window, 'unload', Class.destroyAllObjects); Class.addedDestructionLoader = true; } Class.objectsToDestroy.push(obj); }, destroyAllObjects: function() { var i,item; for(i=0;item=Class.objectsToDestroy[i];i++) { if(item.destroy) item.destroy(); } Class.objectsToDestroy = null; } }

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  • sqlite3 update text in uitextview

    - by summer
    i had the sqlite statement ready for update..but i am confuse about grabbing text from uitextview and updating it..and i waned to update it using a uibutton..how do i carry on after creating the sql statement???kinda lost..any new solution is appreciate.. - (void) saveAllData { if(isDirty) { if(updateStmt == nil) { const char *sql = "update Snap Set snapTitle = ?, snapDesc = ?, Where snapID = ?"; if(sqlite3_prepare_v2(database, sql, -1, &updateStmt, NULL) != SQLITE_OK) NSAssert1(0, @"Error while creating update statement. '%s'", sqlite3_errmsg(database)); } sqlite3_bind_text(updateStmt, 1, [snapTitle UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text(updateStmt, 2, [snapDescription UTF8String], -2, SQLITE_TRANSIENT); sqlite3_bind_int(updateStmt, 3, snapID); if(SQLITE_DONE != sqlite3_step(updateStmt)) NSAssert1(0, @"Error while updating. '%s'", sqlite3_errmsg(database)); sqlite3_reset(updateStmt); isDirty = NO; } //Reclaim all memory here. [snapTitle release]; snapTitle = nil; [snapDescription release]; snapDescription = nil; //isDetailViewHydrated = NO; }

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  • IIS7 ASP.NET Session drops in seconds

    - by shxo
    For testing I have 1 isolated page - no masters, controls, …. My sessions are lost after about 30 seconds. I’ve tried setting timeout on the page itself, in web.config, both, and neither. Tried forms authentication with timeout and windows authentication. Recycle the AppPool after changes. I can response.write from the Session_Start , but I never get any response.writes from the Session_End. Some things I’ve tried: <sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;" cookieless="false" timeout="20" /> <sessionState mode="InProc" cookieless="false" timeout="20"/> <sessionState mode="InProc" timeout="20"/> <sessionState timeout="20"/> No luck. My runtime is set to: <httpRuntime useFullyQualifiedRedirectUrl="true" maxRequestLength="204800" requestLengthDiskThreshold="204800" executionTimeout="600" /> I don’t know what this would be relevant, but I can’t think of anything else to post! Thanks!

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  • ASP.Net MVC Object Reference in Edit View when using DropDownListFor()

    - by hermiod
    This question is related to another I ask recently, it can be found here for some background information. Here is the code in the Edit ActionResult: public virtual ActionResult Edit(int id) { ///Set data for DropDownLists. ViewData["MethodList"] = tr.ListMethods(); ViewData["GenderList"] = tr.ListGenders(); ViewData["FocusAreaList"] = tr.ListFocusAreas(); ViewData["SiteList"] = tr.ListSites(); ViewData["TypeList"] = tr.ListTalkbackTypes(); ViewData["CategoryList"] = tr.ListCategories(); return View(tr.GetTalkback(id)); } I add lists to the ViewData to use in the dropdownlists, these are all IEnumerable and are all returning values. GetTalkback() returns an Entity framework object of type Talkback which is generated from the Talkback table. The DropDownListFor code is: <%: Html.DropDownListFor(model=>model.method_id,new SelectList(ViewData["MethodList"] as IEnumerable<SelectListItem>,"Value","Text",Model.method_id)) %> The record I am viewing has values in all fields. When I click submit on the View, I get an Object reference not set to an instance of an object. error on the above line. There are a number of standard fields in the form prior to this, so the error is only occurring on dropdown lists, and it is occurring on all of them. Any ideas? This is my first foray in to MVC, C#, and Entity so I am completely lost!

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  • Losing Session between Classic ASP and ASP.NET

    - by Aaron
    The company that I work for is making a transition between classic ASP programs and ASP.NET programs for our intranet software. Eventually, everything will be written in ASP.NET, but because of time constraints, there are still a number of programs that use classic ASP. To compensate we've written features that allow for redirects and autologins between classic ASP programs and ASP.NET programs. I've been starting to see a problem, though, with holding the session state for our ASP.NET software. If a user uses an ASP.NET program, then does work in a classic ASP program, then goes back to that ASP.NET program, often times, the user's authentication for the ASP.NET program is still in place, yet the user's session is lost, resulting in an error whenever a function is performed within the program. I'm trying to capture the loss of the session state in global.asax's Session_End event, which would redirect the user to the login page, but that hasn't worked. Has anyone else faced a similar issue with users moving back and forth between classic ASP and ASP.NET and losing sessions? Is that even my real issue here? It's the only thing that I can see as being a problem. Thanks for any help.

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  • deserialize Json using JavaScriptSerializer Custom Types

    - by Dave
    I have a RESTFUL WCF service returning a .NET custom type as json string. I am using .NET 3.5 framework and I am using JavaScriptSerializer for deserializing it in to my custom type. Serialization to json is handled by WCF. using (WebResponse resp = req.GetResponse()) { using (System.IO.StreamReader sreader = new System.IO.StreamReader(resp.GetResponseStream())) { string jsonString = sreader.ReadToEnd(); CustomType myType = new CustomType(); System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer(); myType = serializer.Deserialize<CustomType>(jsonString); return myType; } } The problem is that, I have a property (or element) of the CustomType which is generic list of another custom type ChildObject. They are in different namespaces. When I deserialize using the code above, I get all the properties of the CustomType myType including a list of ChildObject. But all the properties of the ChildObject is null. The string returned from the stream reader has all the values for the ChildObject. the values are lost when deserializing. Can anyone help me with this please?

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  • Com server build using Python on 64-bit Windows 7 machine

    - by Vijayendra Bapte
    Original post is here: http://mail.python.org/pipermail/python-win32/2010-December/011011.html I am using: OS: 64 bit Windows 7 Professional Python: python-2.7.1.amd64 Python win32 extensions: pywin32-214.win-amd64-py2.7 Py2exe: py2exe-0.6.9.win64-py2.7.amd64 I am trying to build icon overlay for Windows. It has worked fine on 32 bit Windows but not working on 64 bit Windows 7. Here are the Python modules I have created for testing: test_icon_overlay.py: ( http://mail.python.org/pipermail/python-win32/attachments/20101229/bb8c78a4/attachment-0002.obj ) com server created in Python for icon overlay which adds check mark overlay icon(C:\icons\test.ico) on "C:\icons" folder setup_VI.py: ( http://mail.python.org/pipermail/python-win32/attachments/20101229/bb8c78a4/attachment-0003.obj ) setup file which creates test_icon_overlay.dll for distribution. icons.zip: ( http://mail.python.org/pipermail/python-win32/attachments/20101229/bb8c78a4/attachment-0001.zip ) for testing you should extract icons.zip inside C:\ Icon overlay appears on C:\icons folder when I execute python test_icon_overlay.py on Windows command prompt and restarts explorer.exe. But its not working with the dll file created using setup_VI.py I have created dll file using python setup_VI.py py2exe and then tried to register it using regsvr32 test_icon_overlay.dll. Registration fails with windows error message Error 0x80040201 while registering shell extension. Then I turned on logger in Python27/Lib/site-packages/py2exe/boot_com_servers.py and here is the traceback which I am getting in comerror.txt on regsvr32 test_icon_overlay.dll PATH is ['C:\\root\\avalon\\module\\sync\\python\\src\\dist\\library.zip'] Traceback (most recent call last): File "boot_com_servers.py", line 37, in <module> pywintypes.error: (126, 'GetModuleFileName', 'The specified module could not be found.') Traceback (most recent call last): File "<string>", line 1, in <module> NameError: name 'DllRegisterServer' is not defined Looks like there might be a problem with win32api.GetModuleFileName(sys.frozendllhandle) or with the dll build on 64-bit Windows 7. Also, I saw that installation of pywin32-214.win-amd64-py2.7 on 64-bit Windows 7 finish with the error message: Snapshot close failed in file object destructor: sys.excepthook is missing lost sys.stderr Is there anything which I am doing wrong? Any help on this is highly appreciated.

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  • How to correctly set the ORACLE_HOME variable on Ubuntu 9.x?

    - by nowarninglabel
    I have the same problem as listed here: http://stackoverflow.com/questions/52239/oracle-lost-sysdba-password although I did not lose the password, I entered it twice in the configure script originally, and then when I went to login (localhost:8080/apex, password not accepted. I don't have anything in the database, I just want to install and use Oracle-XE. I have tried apt-get removing it twice and reinstalling, but if I try to run /etc/init.d/oracle-xe configure again and I get "Oracle Database 10g Express Edition is already configured" despite the second time removing any folders I could find for Oracle XE. I tried running sqlplus "/ as sysdba" but all I get is: "Error 6 initializing SQL*Plus Message file sp1.msb not found SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory" I tried setting the variable via export. (also tried set). Tried: "export ORACLE_HOME=/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/sqlplus" and all the subdirectories of that. Same error every time. What is the ORACLE_HOME supposed to be set to? The only reference I have seen either just say general or say the above up to the version number then "/db_1". I do no thave a db_1. Let me know if need any clarification. Don't understand what I did wrong in this process.

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  • Can't get NUnit to work in Visual Web Develper 2010 express.

    - by UkraineTrain
    First off I was wondering whether it's possible to implement a functionality with Nunit where each time a project is created in Visual Web Developer 2010 I get a dialog asking whether I want to create a unit test project for current application like I saw it happen in the older versions of Visual Web Developer. I've tried just about everything to get NUnit 2.5.5 to work in Visual Web Developer 2010. For example, in nunit.exe.config I added under configuration <startup> <requiredRuntime version="v4.0.30319" /> </startup> and under runtime: <loadFromRemoteSources enabled="true" /> I then tried to launch nunit-console.exe in order to specify in the command line the option /framework=net-4.0, but the console would appear and instantly disappear. It didn't help when I tried running it as an administrator. I've also tried using Nunit as an external tool inside the Visual Web Developer by creating a toolbar as described in the following link: http://www.marthijnvandenheuvel.com/2010/06/09/using-nunit-in-visual-studio-2010/. It shows up as an icon in the toolbar. I ran my project called ToyStore and then clicked Nunit icon in order to launch it and it gave me a "System.IO.FileNotFoundException:Assembly not found:ToyStore.dll". So, needless to say, I'm pretty lost and don't know what to do and would greatly appreciate any help in getting Nunit to work.

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  • Upload image from J2ME client to a Servlet

    - by Akash
    I want to send an image from a J2ME client to a Servlet. I am able to get a byte array of the image and send it using HTTP POST. conn = (HttpConnection) Connector.open(url, Connector.READ_WRITE, true); conn.setRequestMethod(HttpConnection.POST); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); os.write(bytes, 0, bytes.length); // bytes = byte array of image This is the Servlet code: String line; BufferedReader r1 = new BufferedReader(new InputStreamReader(in)); while ((line = r1.readLine()) != null) { System.out.println("line=" + line); buf.append(line); } String s = buf.toString(); byte[] img_byte = s.getBytes(); But the problem I found is, when I send bytes from the J2ME client, some bytes are lost. Their values are 0A and 0D hex. Exactly, the Carriage Return and Line Feed. Thus, either POST method or readLine() are not able to accept 0A and 0D values. Any one have any idea how to do this, or how to use any another method?

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  • TinyMCE + jQuery + custom plugin = tinymce is undefined?

    - by user368691
    The problem occurs when I try to create small plugin to allow me toggle on and off WYSIWYG on all textareas in the website. //$('form.default textarea').each(function(){ // console.log( $('<a href="#">Enable WYSIWYG editor</a>').insertAfter('form.default textarea').prev('textarea.wysiwyg').tinymce().hide() ); //}); The full (a bit simplified) code looks like this: $('textarea.wysiwyg').tinymce({ skin : 'cirkuit', theme : 'advanced', plugins : 'pagebreak,style,layer,advlink,inlinepopups,contextmenu,paste,directionality,noneditable,nonbreaking,xhtmlxtras,template', // Theme options theme_advanced_buttons1 : 'formatselect,fontsizeselect,forecolor,|,bold,italic,strikethrough,|,bullist,numlist,|,justifyleft,justifycenter,justifyright,|,link,unlink,|,image,|,code,paste,pastetext,pasteword,removeformat,|,backcolor,|,underline,justifyfull,sup,|,outdent,indent,|,hr,charmap,|,undo,redo', theme_advanced_buttons2 : '', theme_advanced_buttons3 : '', theme_advanced_toolbar_location : 'top', theme_advanced_toolbar_align : 'left', theme_advanced_statusbar_location: 'bottom', theme_advanced_resizing : true, theme_advanced_resize_horizontal : false, height : 500, theme_advanced_resizing_min_height : 500, document_base_url : 'http://static.<?=$settings['system_host']?>/' }); $('textarea.wysiwyg').each(function() { $(this).tinymce().hide(); }); What is the error? FireBug says that tinymce() in undefined; this message occurs in each() loop. Thus, tinymce() is actually initialized. I am really lost towards, what could be causing this.

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