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  • Ruby get inheriting class

    - by Brian D.
    I'm working on creating my first plugin for rails. I'm still pretty new to ruby and I was wondering if its possible to get the inheriting class? For example, I'm trying to create a plugin that will allow unit testing and functional testing when you are not using migrations. What I'm trying to do is initialize a class variable named controller to be initialized to the type of controller that is being tested. If I have a base class ControllerTest: class ControllerTest < Test::Unit::TestCase attr_accessor :controller def initialize super @controller = "call function that will find the inheriting classes name and create an instance of that controller type." end end So what I'm currently stuck on is getting the name of the inheriting class. Is this possible? And if not, does anyone know another way on how I could go about implementing this? Thanks in advance.

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  • Ruby on Rails - f.error_messages not showing up

    - by Brian Roisentul
    Hi, I've read many posts about this issue but I never got this to work. My model looks like this: class Announcement < ActiveRecord::Base validates_presence_of :title, :description end My controller's create method(only its relevant part) looks like this: def create respond_to do |format| if @announcement.save flash[:notice] = 'Announcement was successfully created.' format.html { redirect_to(@announcement) } format.xml { render :xml => @announcement, :status => :created, :location => @announcement } else @announcement = Announcement.new @provinces = Province.all @types = AnnouncementType.all @categories = Tag.find_by_sql 'select * from tags where parent_id=0 order by name asc' @subcategories= '' format.html { render :action => "new" } #new_announcement_path format.xml { render :xml => @announcement.errors, :status => :unprocessable_entity } end end end My form looks like this: <% form_for(@announcement) do |f| %> <%= error_messages_for 'announcement' %> <!--I've also treid f.error_messages--> ... What am I doing wrong?

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  • How do I join two git repos without a common root, where all modified files are the same?

    - by Evan Carroll
    I have a git-cpan-init of a repo which yielded a different root node from another already established git repo I found on github C:A:S:DBI. I've developed quite a bit on my repo, and I'd like to merge or replay my edits on a fork of the more authoritative repository. Does anyone know how to do this? I think it is safe to assume none of the file-contents of the modified files are different -- the code base hasn't been since Nov 08'. For clarity the git hub repo is the authoritative one. My local repo is the one I want to go up to git hub shown as a real git fork.

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  • Is is better to store serialized data or raw html in mysql?

    - by Yegor
    I de-normalized my database, since the application was crawling otherwise, and Im storing a list of categories for each item in the DB as a raw html version, and simply echoing it out in my design. Each category is actually a link, which is include a tag. Naturally, this is abit of a pain, especially if I want to change the look of how the category links are displayed, since I gotta update all the old cached entries. What if I were to store this data as a serialized array instead, and simply unserialize it, and then apply formatting to it in php. Would there be a significant performance decrease over simply echoing out the raw html?

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  • How can I share Configuration Settings across multiple projects in Visual Studio?

    - by Muneeb
    Ok I know this may be a design issue, so I would love to have remarks on that as well. I have a Visual Studio web application solution. I have three projects as UserInterface, BusinessLogic and DataAccess. I had to store some user defined settings and I created configSections in the config file. I access these configSections through classes which inherit from .NET's ConfigurationSection base class. So in short for every project I had a separate configSection and for that corresponding configSection I had a class in that project inheriting from ConfigurationSection to access the config section settings. This works all sweet. But the problem arises if there is any setting which I need to use across multiple projects. So If I need to use a setting defined in UserInterface project configSection in, let say, BusinessLogic project I have to actually make a copy of that setting in the BusinessLogic's configSection. This ends up having the same setting copied across multiple configSections. Isn't this a bit too redundant?

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  • Project design / FS layout for large django projects

    - by rcreswick
    What is the best way to layout a large django project? The tutuorials provide simple instructions for setting up apps, models, and views, but there is less information about how apps and projects should be broken down, how much sharing is allowable/necessary between apps in a typical project (obviously that is largely dependent on the project) and how/where general templates should be kept. Does anyone have examples, suggestions, and explanations as to why a certain project layout is better than another? I am particularly interested in the incorporation of large numbers of unit tests (2-5x the size of the actual code base) and string externalization / templates.

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  • Android Apps: What is the recommended targetSdk for broadest appeal?

    - by johnrock
    I have an Android app that only needs internet access and would like to target API level 3 (1.5) to reach the broadest handset base. However, it appears that targeting API level 3 implicitly requires two additional permissions that are visible to users: modify sd card, and read phone state. See: http://stackoverflow.com/questions/1747178/android-permissions-phone-calls-read-phone-state-and-identity) So the connundrum, do I target API level 4 and turn away users running 1.5, or do I target API level 3 and turn away users who are upset that my app is requesting so many permissions that it shouldn't need? What is the smartest thing to do here? Are there really a lot of users still limited to API level 3? I appreciate any wisdom offered! Thanks!

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  • Visual Studio Add-in - How do I create an Installer?

    - by Morgeh
    I have made a Visual Studio Add-in as part of a project I'm working on using web services. When I created the new Add-in project in visual studio it generated all the code required and installed the blank add-in on my pc (I assume). Since this is a large project we are using svn to manage the code base and once I had done some of the work on the Add-in I commited it, then checked it out on a different pc and attempted to run it. However on the other pc when I run the add-in in debug mode, the tools entry for the add-in is not present and I can't run the add-in. Am I right in assuming that when I created the project on the other pc it installed the plugin aswell?? and does that mean that I will need to create an installer for any other pcs I wish to use? Obviously at some point I intend on making an installer anyway but not untill after the development of the addin is complete.

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  • How do I initialize attributes when I instantiate objects in Rails?

    - by nfm
    Clients have many Invoices. Invoices have a number attribute that I want to initialize by incrementing the client's previous invoice number. For example: @client = Client.find(1) @client.last_invoice_number > 14 @invoice = @client.invoices.build @invoice.number > 15 I want to get this functionality into my Invoice model, but I'm not sure how to. Here's what I'm imagining the code to be like: class Invoice < ActiveRecord::Base ... def initialize(attributes = {}) client = Client.find(attributes[:client_id]) attributes[:number] = client.last_invoice_number + 1 client.update_attributes(:last_invoice_number => client.last_invoice_number + 1) end end However, attributes[:client_id] isn't set when I call @client.invoices.build. How and when is the invoice's client_id initialized, and when can I use it to initialize the invoice's number? Can I get this logic into the model, or will I have to put it in the controller?

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  • Rails Cache Sweeper and Model Callback Firing

    - by Topher Fangio
    Hey guys, I have the following classes: class Vigil < ActiveRecord::Base after_update :do_something_cool private def do_something_cool # Sweet code here end end class NewsFeedObserver < ActionController::Caching::Sweeper observe Vigil def after_update # Create a news feed entry end end Everything works as expected. The after_update in the sweeper requires that the do_something_cool method in the model has finished before it can run properly. The problem is that the after_update in the sweeper is being called before (or perhaps at the same time as) the do_something_cool callback and it's causing problems. Does anyone know how to force the after_update in the sweeper to fire after the model callback? Is there better way to achieve this?

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  • Service injection into Controller (Spring MVC)

    - by ThaSaleni
    Hi I have a Spring web application, I have built it up to the controller stage and I could inject my Daos, into my Services fine. Now when I want to inject my Service into my controller i get an error for dependency with the Dao and further down the sessionFactory. I don't want to inject these again cause this will ultimately lead me to eventually create a data source but I have my Daos for data access and they already know about sessionFactory. Am I missing something here? here's the sample code snippets My Service: @Service("productService") @Transactional public class ProductServiceImpl implements ProductService { private ProductDao productDao; @Autowired public void setDao(ProductDao productDao) { this.productDao = productDao; } My Controller @Controller @WebServlet(name="controllerServlet", loadOnStartup= urlPatterns=...}) public class ControllerServlet extends HttpServlet { boolean isUserLogedIn =false; @Autowired private ProductService productService; public void setProductService(ProductService productService){ this.productService = productService; } Servlet-context Stack trace javax.servlet.ServletException: Servlet.init() for servlet mvcServlet threw exception org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java: 565) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1812) java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) java.lang.Thread.run(Thread.java:662) root cause org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'controllerServlet': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.phumzile.acme.services.ProductService com.phumzile.acme.client.web.controller.ControllerServlet.productService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.phumzile.acme.services.ProductService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.p ostProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) SERVLET-CONTEXT <context:component-scan base-package="com.phumzile.acme.client" /> <!-- Enables the Spring MVC @Controller programming model --> <mvc:annotation-driven /> </beans> APP-CONFIG <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>configuration.properties</value> </list> </property> </bean> <context:annotation-config/> <context:component-scan base-package="com.phumzile.acme" /> <import resource="db-config.xml" /> </beans> DB-CONFIG <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="idleConnectionTestPeriod" value="10800"/> <property name="maxIdleTime" value="21600"/> <property name="driverClass"> <value>${jdbc.driver.className}</value> </property> <property name="jdbcUrl"> <value>${jdbc.url}</value> </property> <property name="user"> <value>${jdbc.username}</value> </property> <property name="password"> <value>${jdbc.password}</value> </property> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.a nnotation.AnnotationSessionFactoryBean"> <property name="dataSource"> <ref bean="dataSource" /> </property> <property name="annotatedClasses"> <list> <!-- Entities --> <value>com.phumzile.acme.model.User</value> <value>com.phumzile.acme.model.Person</value> <value>com.phumzile.acme.model.Company</value> <value>com.phumzile.acme.model.Product</value> <value>com.phumzile.acme.model.Game</value> <value>com.phumzile.acme.model.Book</value> <!-- Entities --> </list> </property> <property name="packagesToScan" value="com.phumzile.acme" /> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">${jdbc.hibernate.dialect </prop> <prop key="hibernate.hbm2ddl.auto">validate</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> </bean> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory"> <ref bean="sessionFactory" /> </property> </bean> <tx:annotation-driven /> </beans> CONFIGURATION.PROPERTIES jdbc.driver.className=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/mydb jdbc.username=root jdbc.password=root jdbc.hibernate.dialect=org.hibernate.dialect.MySQLDialect

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  • Memory consumption of resource manager

    - by Quang Anh
    I'm writing a resource manager, which is required to be fast and has small memory foot-print. For example, I have an resource class class Abc { string m_name; string m_path; string handle; void SomeFunctions(); } And so on. Now I create and List and add 5000 items to it. How much memory will it consume? One more question: Can I find items base on handle number only, which is the int part of the Tuple?

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  • Tabbed javascript widget for a Rails app

    - by neilc
    A user registers on our Rails app and they're given javascript to embed a widget in their website. The widget has a tabbed interface, like the JQuery tabs http://stilbuero.de/jquery/tabs_3/. iFrames have been tested, but the widget form factor and cross-domain policy negates the use of iframes. The widget is very dynamic and will often update the DOM with new content - and because of cross-domain policy, it looks as though JSONP is necessary. I understand that 'widget.js.erb' needs to create the widget layout, reference a stylesheet, render the tabs, etc - but once a tab is clicked, how does the widget request the content from the Rails app and render it in the DOM?

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  • C++: warning: '...' declared with greater visibility than the type of its field '...::<anonymous>'

    - by Albert
    I'm getting these two warnings (with GCC 4.2 on MacOSX): /Users/az/Programmierung/openlierox/build/Xcode/../../src/main.cpp:154:0 /Users/az/Programmierung/openlierox/build/Xcode/../../src/main.cpp:154: warning: 'startMainLockDetector()::MainLockDetector' declared with greater visibility than the type of its field 'startMainLockDetector()::MainLockDetector::<anonymous' /Users/az/Programmierung/openlierox/build/Xcode/../../src/main.cpp:154:0 /Users/az/Programmierung/openlierox/build/Xcode/../../src/main.cpp:154: warning: 'startMainLockDetector()::MainLockDetector' declared with greater visibility than its base 'Action' In this code: struct Action { virtual ~Action() {} virtual int handle() = 0; }; static void startMainLockDetector() { /* ... */ struct MainLockDetector : Action { bool wait(Uint32 time) { /* ... */ } int handle() { /* ... */ } }; /* ... */ } I'm not exactly sure what these warnings mean (what visibility?) and how to fix them. (I really want the class MainLockDetector to be local for that function only.) I have already compiled the same code with a lot of other compilers (clang, GCC 3.*, GCC 4.0, GCC 4.4, etc) and never got any warning for this code.

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  • Should I use DTOs as my data models in MVVM?

    - by JonC
    I'm currently working on what will be my first real foray into using MVVM and have been reading various articles on how best to implement it. My current thoughts are to use my data models effectively as data transfer objects, make them serializable and have them exist on both the client and server sides. It seems like a logical step given that both object types are really just collections of property getters and setters and another layer in between seems like complete overkill. Obviously there would be issues with INotifyPropertyChanged not working correctly on the server side as there is no ViewModel to which to communicate, but as long as we are careful about constructing our proper domain model objects from data models in the service layer and not dealing the the data models on the server side I don't think it should be a big issue. I haven't found too much info about this approach in my reading, so I would like to know if this is a pretty standard thing, is this just assumed to be the de facto way of doing MVVM in a multi-tier environment? If I've got completely the wrong idea about things then thoughts on other approaches would be appreciated too.

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  • How to store an enum inside a DataColum of a DataTable and show localized text in .Net

    - by SoMoS
    Hello, I have to store on one DataColum of one DataTable an Enum containing some values. De enum is defined as follow: Imports System.ComponentModel Imports System.Globalization Public Enum FirmwareUpdateStatus <Description("updateNotExecuted")> UpdateNotExecuted = 0 <Description("updateSuccess")> UpdateSuccess = 1 <Description("updateError")> UpdateError = 2 End Enum I have also a class called Enum2 that has a method called GetDescription that returns the localized text of an enum value. What I want to do is to show this text into the grid that shows the DataTable but storing the enum value, not the string. How can this be done? Thanks in advance"

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  • Delay after pressing a button

    - by KrLx_roller
    After I press a button, Android parse a JSON file and pick the info it needs. Until yesterday, I was using an external library created by a user and it worked perfectly. But now, I don't want to depend on him, so I've searching info about Google's GSON. I've implemented this library with no problem, but now, after pressing the button that opens a new activity there's a delay. This delay is due to the connection and parsing that are done before the activity shows. How can I force the app to wait the Internet connection until de Activity is shown? It's a lil bit uncomfortable because after pressing the button, it seems that the app has frozen, but after all data is loaded, the new activity appears. Thank you in advance!

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  • jQuery compatible JavaScript documentation generator

    - by clyfe
    I need to choose a documentation generator (similar to jdoc in java or rdoc in ruby) for my javascript project that (built with jquery, underscore and backbone) Candidates: jsdoc toolkit pdoc natural docs docco YUI doc doctool http://jquery.bassistance.de/docTool/docTool.html other ? Requirements should work with jquery, underscore and backbone. that means object-literal methods etc I really like pdoc but its too centered around prototype, poorly documented, and I don't want to make extra files (sections?) to make it work (not sure about this) docco is nice but I want structured output (as in menu + class/func structure like jdoc) must be command line/makefile compatible (not web pastie) Tips, tricks, tutorials, success stories, advice greatly welcomed. Why Doesn't jQuery use JSDoc?

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  • Posting comment with ajax and jquery

    - by Steve
    I want to display the posted comment once the user comments. Just to add it under all of them as facebook does. I have this: // Interceptamos el evento submit $('#CommentAddForm').submit(function() { alert("entro"); alert($(this).attr('action')); // Enviamos el formulario usando AJAX $.ajax({ type: 'POST', url: $(this).attr('action'), data: $(this).serialize(), // Mostramos un mensaje con la respuesta de PHP success: function(data) { $('#result').html(//????????????); } }); return false; }); But i don't know very well how it works and i dont know what should i write in the line $('#result').html(//????????????); The variable URL contains the route which inserts the comment in the DB. And it works well. Any idea? Thanks. By the way, i have been reading this answer: Ajax/jQuery Comment System But i still don't get it.

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  • Devise email confirmation from localhost

    - by John
    I am able to get the registration confirmation email to send out in deployment on Heroku, but when I try a registration on localhost:3000, I get the following error: undefined local variable or method `confirmed_at' for #<User:0xb67a1ff0> In my config/environments/production.rb file I have: config.action_mailer.default_url_options = { :host => 'xxxx.com' } And I have an initializer file with the following format: ActionMailer::Base.smtp_settings = { :user_name => "[email protected]", :password => "xxxxxx", :domain => "xxxx.com", :address => "smtp.sendgrid.net", :port => "xxx", :authentication => :plain, :enable_starttls_auto => true }; What settings do I need to get the localhost working? Thanks! John

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  • ajax strange error with sending multiple parameter

    - by kawtousse
    hi everyone, please check with me where is the error in this ajax code to send 2 parameters: var xhr = getXhr(); // On défini ce qu'on va faire quand on aura la réponse xhr.onreadystatechange = function(){ // On ne fait quelque chose que si on a tout reçu et que le serveur est ok if(xhr.readyState == 4 && xhr.status == 200) { selects = xhr.responseText; // On se sert de innerHTML pour rajouter les options a la liste //document.getElementById('prjsel').innerHTML = selects; } }; xhr.open("POST","ServletEdition",true); xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded'); id=document.getElementById(idIdden).value; fu=document.getElementById("formUpdate").value; //alert(fu); var i=1; xhr.send("id=" +id+", fu="+i); i cant got the value of fu i don't know why. thanks

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  • SqlBulkCopy unusual TimeOut Error

    - by ChrisHDog
    I have a SqlBulkCopy operation that is taking data from an MS-Access 2007 database (via OleDbConnection) and using SqlBulkCopy to transfer that data to a SQL Server database. This has previously been working and continues to work for one MS-Access database, but not the other. I get the error message: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. It is hard to believe it is a timeout ast the oledbCommand.CommandTimeout = 0 the sqlBulkCopy.BulkCopyTimeout = 0 and on either side (MS-Access and SQL Server the timeouts have now been set to 0). Are there other issues/exceptions that the above error message could be hiding? Is there a way to determine what the base cause of a sqlBulkCopy.WriteToServer exception is (there doesn't appear to be any inner exceptions etc...)

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  • Applying a function to an arbitrarily long list of arguments

    - by alphomega
    I want to create a function apply that takes a function with an arbitrary amount of arguments as well as a list of integers, and returns the result of the function (Where each integer in the list is an argument in order. I was thinking something like: apply :: ([Int] -> Int) -> [Int] -> Int apply f x:xs = apply (f x) xs apply f [] = f But I know this won't work because the type signature is wrong - the function doesn't take a list of ints, it just takes some amount of int arguments. Additionally, when I get to the base case the f argument to apply should actually be an integer, violating the type signature anyway. Does anyone know how to deal with this sort of problem?

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  • Grails: Property Null error

    - by richardhell
    I've a domain called Modulo with some properties and a Controller with a method that create a object from model and save it, when execute save the shell show this error: La propiedad [{0}] de la clase [{1}] no puede ser nulo But if i set the constraint nullable to true, the error show again. I think that i should not set this cosntraint. The model is linked to a mysql table with all properties except id allow null. I think I am not doing something wrong here. Any advice?? Domain: Modulo class Modulo { String nombre String icon String url //static constraint = { // url(nullable:true) //} } Controller: Example class ExampleController { def index = { def modulo = new Modulo( nombre:'xxx', icon:'xxx' ) if (modulo.save()){ println 'ok' }else{ modulo.errors.allErrors.each { println it.defaultMessage} } } } Thanks. José

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  • Is it good to subclass a class only to separate some functional parts?

    - by prostynick
    Suppose we have abstract class A (all examples in C#) public abstract class A { private Foo foo; public A() { } public void DoSomethingUsingFoo() { //stuff } public void DoSomethingElseUsingFoo() { //stuff } //a lot of other stuff... } But we are able to split it into two classes A and B: public abstract class A { public A() { } //a lot of stuff... } public abstract class B : A { private Foo foo; public B() : base() { } public void DoSomethingUsingFoo() { //stuff } public void DoSomethingElseUsingFoo() { //stuff } //nothing else or just some overrides of A stuff } That's good, but we are 99.99% sure, that no one will ever subclass A, because functionality in B is very important. Is it still good to have two separate classes only to split some code into two parts and to separate functional elements?

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