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  • NoMethodError: undefined method `has_attached_file'

    - by mirza
    Paperclip produces this error, after checking out the plugin's rails3 branch. My Gemfile has following line: gem 'paperclip', :git => 'http://github.com/thoughtbot/paperclip.git', :branch => 'rails3' And the error message is: NoMethodError: undefined method `has_attached_file' for #<Class:0x2a50530>

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  • Javascript AJAX function returns undefined instead of true / false

    - by Josh K
    I have a function that issues an AJAX call (via jQuery). In the complete section I have a function that says: complete: function(XMLHttpRequest, textStatus) { if(textStatus == "success") { return(true); } else { return(false); } } However, if I call this like so: if(callajax()) { // Do something } else { // Something else } The first is never called. If I put an alert(textStatus) in the complete function I get true, but not before that function returns undefined.

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  • Undefined control sequence at first line of a document

    - by Jayomat
    \documentclass{book} \usepackage{amsmath} \usepackage[german]{babel} \usepackage{amssymb} \usepackage{amsxtra} \usepackage[dvips]{epsfig,psfrag} \usepackage{listings} .... this is how my file starts. I didn't even edit it, I received it like this. However, if I want to make a pdf, it gives me the undefined control sequence error at the first line... What is wrong??

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  • C++ undefined reference

    - by klaus-johan
    Hi , My problem is the following : I have a class A that inherits from an abstract base class. I override all the virtual functions from the base class, and I have a constructor like this : A::A(B* b) { this->b=b; } In the constructor of class B , I have the following piece of code: A* a=new A(this) However this line of code gives the error : undefined reference to 'A::A(B*)' I have absolutly no idea why could this be happening , so any suggestion would be greatly appreciated !

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  • win32:libs undefined reference

    - by hector
    I want to link a .lib in my Qt project and I get an error about an undefined reference to vhtIOConn::getDefault(vhtIOConn::DeviceType). I have already added the following specifications to the .pro file: ###################################################################### # Automatically generated by qmake (2.01a) vie 28. ago 12:48:10 2009 ###################################################################### TARGET = DEPENDPATH += . INCLUDEPATH += . LIBS += "C:\agregar\VirtualHandCore.lib" LIBS += "C:\agregar\VirtualHandDevice.lib" LIBS += "C:\agregar\VirtualHandRegistry.lib" # Input HEADERS += "C:/Documents and Settings/halvarado/Mis documentos/respaldos de Qt/Development/include/vhandtk/vhtBase.h" SOURCES += main.cpp What should I do?

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  • flex: 1120 access to undefined property

    - by vas
    I was trying to place some simple effects on an image using HBox using Hslider/Checkbox. I am unable to incorporate the required effects on the image.I an getting the errors "120 access to undefined property" ....poinying to "HSlider/change". What can be the error/solution to this? liveDragging="true" selected="true"/ Thanks in advance?

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  • Unable to get value of property 'keyCode': object is null or undefined : Internet Explorer

    - by user1409232
    One of the customers are facing difficulty while logging into our webiste, whenever the user types the first character in UserName text box on the sign in page, he gets below JavaScript error message. Unable to get value of property 'keyCode': object is null or undefined We do check for event.keyCode to validate the userName textbox , so as soon as the user types the first character we send the event.keyCode for validation which is failing. The browser is internet Explorer 9 and we are not able to reproduce the problem in our workstation which has I9

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  • undefined local variable or method `user', using CarrierWave for profile images

    - by Amar H-V
    I've been following Ryan Bates' Railscasts tutorial on CarrierWave, which you can find here Everything works fine, except for when I go to view my profile, it gives me this error: undefined local variable or method `user' I don't know why it is telling me this, as I am using Devise for my authentication, and that is the name of my model. Below are some of the files which may be useful: https://gist.github.com/amarh21/7439421 I am using Rails 4.0.1 and ruby 2.0.0

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  • Type is undefined MVC AJAX Script

    - by zsharp
    on one page of my app i get a Type is undefined on the ajax script. why would this be? EDIT Type is not defined MicrosoftMvcAjax.js()()Microsof...vcAjax.js (line 6) [Break on this error] Type.registerNamespace('Sys.Mvc');Sys.Mv...reate_AjaxOptions=function(){return {};}

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  • undefined method `parameterize' for nil:NilClass

    - by Senthil
    I've been trying to do SEO friendly urls, and managed to get it work, but when I call index action on blogs, I get a weird "undefined method `parameterize' for nil:NilClass." The method works when using show method. def to_s title end def to_param "#{id}-#{to_s.parameterize}" end

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  • RoR custom routing/Method/View problem all methods come back as undefined

    - by Jeff
    I am playing with custom view and routes. I think that I have everything right but obviously not. Essentially I tried to copy the show method and show.html.erb but for some reason it will not work. My controller class fatherController < ApplicationController def show @father = Father.find(params[:id]) respond_to do |format| format.html # show.html.erb format.xml { render :xml => @father } end end def ofmine @father = Father.find(params[:id]) respond_to do |format| format.html # show.html.erb format.xml { render :xml => @father } end end end My routes.rb Parent::Application.routes.draw do resources :fathers do resources :kids end match 'hospitals/:id/ofmine' => 'father#show2' end when I go to 127.0.0.1:/father/1 it works fine but when I try to go to 127.0.0.1:/father/1/ofmine it gives the following error. It doesn't matter what the variable/method that is called; it occurs at the first one to be displayed. Both show.html.erb and show2.html.erb are the exact same files My Error from webserver commandline > Processing by fathersController#show2 > as HTML Parameters: {"id"=>"1"} > Rendered fathers/show2.html.erb within > layouts/application (31.6ms) Completed > in 37ms > > ActionView::Template::Error (undefined > method `name' for nil:NilClass): > 4: <td>Name</td><td></td> > 5: </tr> > 6: <tr> > 7: <td><%= @father.name %></td><td></td> > 8: </tr> > 9: <tr> > 10: <td>City</td><td>State</td> app/views/fathers/show2.html.erb:7:in > `_app_views_fatherss_show__html_erb___709193087__616989688_0' Error as displayed on actual page NoMethodError in Fathers#show2 Showing /var/ruby/chs/app/views/fathers/show2.html.erb where line #7 raised: undefined method `name' for nil:NilClass Extracted source (around line #7): 4: Name 5: 6: 7: <%= @father.name % 8: 9: 10: CityState If anyone could tell me what in the world I am doing wrong I would appreciate it greatly.

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  • Undefined reference to `xlCreateBookCA' C++

    - by Jake88
    Hey, I'm trying to use the Libxl library in my eclipse c/c++ project. Right now I'm using the minGW compiler in eclipse. With this following code: Book* book = xlCreateBook(); I get this error: /src/xls2csv.cpp:22: undefined reference to `xlCreateBookCA' Any help would be greatly appreciated :)

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  • Undefined namespace prefix in Nokogiri and XPath

    - by ???? ???????
    I am trying to parse Youtube Gdata to see if video with given id exists. But there isn't normal tag but with namespace. On the link http://gdata.youtube.com/feeds/api/videos?q=KgfdlZuVz7I there is tag: <openSearch:totalResults>1</openSearch:totalResults> There is namespace openSearch: xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/' but I dont know how to deal with it in Nokogiri and Ruby. Here is part of code: xmlfeed = Nokogiri::HTML(open("http://gdata.youtube.com/feeds/api/videos?q=#{video_id}")) xmlfeed.at_xpath("openSearch:totalResults") It gives error: Undefined namespace prefix: openSearch:totalResults

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  • Does "Return value optimization" cause undefined behavior?

    - by 6pack kid
    Reading this Wikipedia article pointed by one of the repliers to the following question: http://stackoverflow.com/questions/2323225/c-copy-constructor-temporaries-and-copy-semantics I came across this line Depending on the compiler, and the compiler's settings, the resulting program may display any of the following outputs: Doesn't this qualify for undefined behavior? I know the article says Depending on the compiler and settings but I just want to clear this.

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  • Why is this undefined behaviour?

    - by xryl669
    Here's the sample code: X * makeX(int index) { return new X(index); } struct Tmp { mutable int count; Tmp() : count(0) {} const X ** getX() const { static const X* x[] = { makeX(count++), makeX(count++) }; return x; } }; This reports Undefined Behaviour on CLang version 500 in the static array construction. For sake of simplication for this post, the count is not static, but it does not change anything.

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  • Call to undefined function phpinclude_once()

    - by Alex Zylman
    I'm making a new php page and I get the error Fatal error: Call to undefined function phpinclude_once() in /home8/nuventio/public_html/marketing/pb2/dashboard.php on line 1 I'm not sure why I'm getting this error, I've done previous pages the same way as this with no problems. This is the line in question: <?php include_once("../utils.php"); ?> After that it just goes into regular HTML code. It works fine without that line.

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  • SignalR cannot read property client of undefined

    - by polonskyg
    I'm trying to add SignalR to my project (ASPNET MVC 4). But I can't make it work. In the below image you can see the error I'm receiving. I've read a lot of stackoverflow posts but none of them is resolving my issue. This is what I did so far: 1) Ran Install-Package Microsoft.AspNet.SignalR -Pre 2) Added RouteTable.Routes.MapHubs(); in Global.asax.cs Application_Start() 3) If I go to http://localhost:9096/Gdp.IServer.Web/signalr/hubs I can see the file content 4) Added <modules runAllManagedModulesForAllRequests="true"/> to Web.Config 5) Created folder Hubs in the root of the MVC application 6) Moved jquery and signalR scripts to /Scripts/lib folder (I'm not using jquery 1.6.4, I'm using the latest) This is my Index.cshtml <h2>List of Messages</h2> <div class="container"> <input type="text" id="message" /> <input type="button" id="sendmessage" value="Send" /> <input type="hidden" id="displayname" /> <ul id="discussion"> </ul> </div> @section pageScripts { <!--Reference the SignalR library. --> <script src="@Url.Content("~/Scripts/jquery.signalR-1.0.0-rc1.min.js")" type="text/javascript"></script> <!--Reference the autogenerated SignalR hub script. --> <script type="text/javascript" src="~/signalr/hubs"></script> <script src="@Url.Content("~/Scripts/map.js")" type="text/javascript"></script> } This is my IServerHub.cs file (located inside Hubs folder) namespace Gdp.IServer.Ui.Web.Hubs { using Microsoft.AspNet.SignalR.Hubs; [HubName("iServerHub")] public class IServerHub : Hub { public void Send(string name, string message) { Clients.All.broadcastMessage(name, message); } } } And this is map.js $(function () { // Declare a proxy to reference the hub. var clientServerHub = $.connection.iServerHub; // Create a function that the hub can call to broadcast messages. clientServerHub.client.broadcastMessage = function (name, message) { $('#discussion').append('<li><strong>' + name + '</strong>:&nbsp;&nbsp;' + message + '</li>'); }; // Get the user name and store it to prepend to messages. $('#displayname').val(prompt('Enter your name:', '')); // Set initial focus to message input box. $('#message').focus(); // Start the connection. $.connection.hub.start().done(function () { $('#sendmessage').click(function () { // Html encode display name and message. var encodedName = $('<div />').text($('#displayname').val()).html(); var encodedMsg = $('<div />').text($('#message').val()).html(); // Call the Send method on the hub. clientServerHub.server.send(encodedName, encodedMsg); // Clear text box and reset focus for next comment. $('#message').val('').focus(); }); }); }); The DLL's I see references for SignalR are: Microsoft.AspNet.SignalR.Core Microsoft.AspNet.SignalR.Owin Microsoft.AspNet.SignalR.SystemWeb Any ideas how to get it work? Should I make any change because the scripts are in /Script/lib folder? NOTE I'm following the instruction found here on how to set up Windsor Castle to make it work with SignalR, and again, seems that the proxy cannot be created and I'm getting the same error: Cannot read property client of undefined meaning that the proxy to the hub was not created This is how I have it in the server public class IncidentServerHub : Hub and like this in the client var clientServerHub = $.connection.incidentServerHub; Again, I can see the dynamically created file here: /GdpSoftware.Server.Web/signalr/hubs So, Why the proxy is not created? Thanks in advance!!! Guillermo.

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