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• Issue while creating an android project with phonegap

  - by Mohit Jain

  When I try to create native android project in eclipse it works perfectly fine, and that shows my android setup is proper but when I try to create a phonegap project it create a error ie: ./create ~/Documents/workspace/HelloWorld com.fizzysoftware.HelloWorld HelloWorld BUILD FAILED /Users/mohit/Documents/eclipse/android-sdk-macosx/tools/ant/build.xml:710: The following error occurred while executing this line: /Users/mohit/Documents/eclipse/android-sdk-macosx/tools/ant/build.xml:723: Compile failed; see the compiler error output for details. Total time: 5 seconds An unexpected error occurred: ant jar > /dev/null exited with 1 Deleting project... cordova version: 2.7 Android api version 14 Ps: I am a ruby on rails developer. This is my day 1 with phonegap/android/ios

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• Best practices for TDD BDD with code that uses external services / api

  - by adam

  I'm using a twitter gem which basically accesses twitter and lets me grab tweets, timeline etc. Its really good but I have a lot of my code that uses the stuff it returns and I need to test it. The things the gem returns aren't exactly simple strings, there pretty complex objects (scary as well) so im left scratching my head. So basically I'm looking for an answer, book, blog, open-source project that can show me the rights and wrongs of testing around external services. answers that are either not language centric or ruby/rails centric would most greatly be appreciated.

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• Can Hibernate automatically uppercase a column on read/insert via configuration?

  - by T Reddy

  We have some columns with data that must always be in uppercase to ensure uniqueness. I was wondering if hibernate can force all such columns to uppercase via some configuration file change? We actually use a custom UserType for encrypting/decrypting column data for some other table, but I figured that would be overkill just to uppercase everything... Alternatively, I was thinking about modifying the models such that all getters/setters will uppercase any string coming and going. The worst(?) case scenario is to modify the Oracle column constraint to ignore case while checking uniqueness. Any thoughts?

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• Installing Sass on Gentoo

  - by iyrag

  I've been trying to install Sass on Gentoo, but it hasn't been going too well. Unfortunately, the latest version of Sass in portage is 3.1.21. What I want to use Sass for requires at least Sass 3.2, which is available through rubygems. What I've tried: emerge dev-ruby/sass (installs an old version) gem install sass The second command appears to install the Sass gem. However, I do not use Rails or Ruby in any other aspect apart from Sass, so the gem appears useless to me. In addition, I do not know where gems are installed to or how to use them (I'm a ruby noob.) All I want to do is call sass from the command line. Are there any ways to obtain an up-to-date version of Sass which I can just use from the command line? Cheers.

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• How to write a linter?

  - by jbdavid

  In my day job I, and others on my team write a lot of hardware models in Verilog-AMS, a language supported primarily by commercial vendors and a few opensource simulator projects. One thing that would make supporting each others code more helpful would be a LINTER that would check our code for common problems and assist with enforcing a shared code formatting style. I of course want to be able to add my own rules and, after I prove their utility to myself, promote them to the rest of the team.. I don't mind doing the work that has to be done, but of course also want to leverage the work of other existing projects. Does having the allowed language syntax in a yacc or bison format give me a leg up? or should I just suck each language statement into a perl string, and use pattern matching to find the things I don't like? (most syntax and compilation errors are easily caught by the commercial tools.. but we have some of our own extentions.)

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• MVC Client Validation from Service Layer

  - by GibboK

  I'm following this article http://www.asp.net/mvc/tutorials/older-versions/models-(data)/validating-with-a-service-layer-cs to include a Service Layer with Business Logic in my MVC Web Application. I'm able to pass messages from the Service Layer to the View Model in a Html.ValidationSummary using ModelState Class. I perform basic validation logic on the View Model (using DataAnnotation attributes) and I have ClientValidation enabled by default which displaying the error message on every single field of my form. The Business logic error message which come from the Service Layer are being displayed on Html.ValidationSummary only after Posting the form to the Server. After Validation from the Service Layer I would like highlight one or more fields and have the message from the Service Layer showing on these fields instead that the Html.ValidationSummary. Any idea how to do it? Thanks

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• What is a good motivating example for dataflow concurrency?

  - by Alex Miller

  I understand the basics of dataflow programming and have encountered it a bit in Clojure APIs, talks from Jonas Boner, GPars in Groovy, etc. I know it's prevalent in languages like Io (although I have not studied Io). What I am missing is a compelling reason to care about dataflow as a paradigm when building a concurrent program. Why would I use a dataflow model instead of a mutable state+threads+locks model (common in Java, C++, etc) or an actor model (common in Erlang or Scala) or something else? In particular, while I know of library support in the languages above (and Scala and Ruby), I don't know of a single program or library that is a poster child user of this model. Who is using it? Why do they find it better than the other models I mentioned?

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• Doctrine Mssql uniqueidentifier isn't cast as char or nvarchar when retrieved from the database.

  - by Tres

  When I retrieve a record from the database which has a column of type "uniqueidentifier", Doctrine fills it with "null" rather than the unique id from the database. Some research and testing has brought this down to a PDO/dblib driver issue. When directly querying via PDO, null is returned in place of the unique id. For reference, http://trac.doctrine-project.org/ticket/1096, has a bit on this, however, it was updated 11 months ago with no comment for resolution. A way around this, as mentioned at http://bugs.php.net/bug.php?id=24752&edit=1, is to cast the column as a char. However, it doesn't seem Doctrine exposes the native field type outside of generating models which makes it a bit hard to detect uniqueidentifier types and cast them internally when building the sql query. Has anyone found a workaround for this?

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• Are there any good resources for developing Entity Framework 4 code-first?

  - by KallDrexx

  I am trying to convert my model-first project to code-first, as I can see dealing with the models with the graphical designer will become hard. Unfortunately, with all my googling I can't find one good reference that describes how to do code-first development. Most resources are out of date (so out of date they refer to it as code-only), and the other references I can find seem to assume you understand the basics of context building and code-first (for example, they reference code to build contexts but don't describe where that code should actually go, and how it's actually run). Are there any decent resources for code-first development, that describe how to map your POCO entities into a database schema?

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• BackgroundWorker not working with TeamCity NUnit runner

  - by Catalin DICU

  I'm using NUnit to test View Models in a WPF 3.5 application and I'm using the BackgroundWorker class to execute asynchronous commands.The unit test are running fine with the NUnit runner or ReSharper runner but fail on TeamCity 5.1 server. How is it implemented : I'm using a ViewModel property named IsBusy and set it to false on BackgroundWorker.RunWorkerCompleted event. In my test I'm using this method to wait for the BackgroundWorker to finish : protected void WaitForBackgroundOperation(ViewModel viewModel) { int count = 0; while (viewModel.IsBusy) { RunBackgroundWorker(); if (count++ >= 100) { throw new Exception("Background operation too long"); } Thread.Sleep(100); } } private static void RunBackgroundWorker() { Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.Background, new ThreadStart(delegate { })); System.Windows.Forms.Application.DoEvents(); } Well, sometimes it works and sometimes it hangs the build. I suppose it's the Application.DoEvents() but I don't know why...

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• Using Google AppEngine app as a OAuth provider

  - by Alistair

  Hi, I'm using the Google AppEngine 1.3.4 SDK which offers to allow your application to act as a OAuth service provider (http://code.google.com/appengine/docs/python/oauth/). Setting up a standard application on my localhost and using the following: Request URL /_ah/OAuthGetRequestToken Authorize URL /_ah/OAuthAuthorizeToken Access Token URL /_ah/OAuthGetAccessToken The client application just gets sent to a page requesting to grant OAuth access even though no user is logged in. Clicking 'Grant access' results in a message saying 'OAuth access granted' with no tokens or anything exchange. Can't see how this could work when it's not even prompting for a login. As this functionality is quite new I can't find much out there. I've created a OAuth provider before in Rails and know that you need a Consumer Key and Secret, something that seems to be lacking in GAE? Any ideas on how to get OAuth working in a sample GAE project are most welcome.

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• How to test custom template tags in Django?

  - by Mark Lavin

  I'm adding a set of template tags to a Django application and I'm not sure how to test them. I've used them in my templates and they seem to be working but I was looking for something more formal. The main logic is done in the models/model managers and has been tested. The tags simply retrieve data and store it in a context variable such as {% views_for_object widget as views %} """ Retrieves the number of views and stores them in a context variable. """ # or {% most_viewed_for_model main.model_name as viewed_models %} """ Retrieves the ViewTrackers for the most viewed instances of the given model. """ So my question is do you typically test your template tags and if you do how do you do it?

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• Thumbnails from HTML pages created and used automatically in web application

  - by Jesper Rønn-Jensen

  I am working on a Ruby on Rails app that visualizes product trees. The tree is built of nodes an everything is rendered in HTML/CSS3. Some of the products make several hundred SQL queries as the tree builds up (up to 800 queries on the biggest tree). I'd like to have small thumbnails of each tree to present it on an index page. So rendering each tree once again and modifying CSS to make a tiny representation is an option. But i think it's probably easier to generate thumbnails, crop, cache, and show these on the index page. Any ideas on how to do this? Any links/articles/blog posts that could help me?

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• Crystal report file does not get deployed to server in ASP.NET MVC

  - by Andrew

  I am using a crystal reports through crystal report viewer server side control in a webform. I am using a webform because the crystal report viewer provides an easy way to export to PDF and to Excel. My problem is that when I deploy to the server, the crystal report .rpt file does not get copied to the target folder. My solution structure looks like this: Solution |-Content |-Controllers |-Models |-Views |-etc... |-Reports |-Default.aspx |-Report.rpt On the server, the Report.rpt file is missing after I publish.

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• Are there any serialization frameworks for java

  - by Grofit

  I know there is simple, which seems to be a decent enough XML serializer and i know there is Jaxb which seems to do the job as well. However im after something a bit more generic, so I could serialize my model to Xml, Json, Binary etc. So the models are just dumb objects that just get thrown into some sort of serialization factory and then the relevant output is spat out... I dont see any reason why you couldn't do this with reflection, so for a REALLY simple solution get the relevent public properties, cut off the get or set and make that the element name... i.e getPersonName() would become <PersonName>xxxx</PersonName> or PersonName:XXXXX

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• "org.json.JSONArray implements Serializable": What's the best option to achieve this?

  - by Daxon

  I am using Grails Webflow, what ever object I pass to a view, it must be Serialized. My domain models "implement Serializable", so they work. The problem is when I get a response from a WebService. It is of the org.json.JSONArray class. I just want to pass the whole Array over to the view yet it doesn't implement Serializable, so it fails, Any thoughts on how I can pass this, or my best option? Can I just edit the source of the org.json library and make every class "imp Serializable"? Or process the result into Domain objects that do "imp Serializable"

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• Django Custom Template Tages: Inclusion Tags

  - by Harry

  Hello world! Im trieng to build my own template tags Im have no idea why I get the errors I get, im following the django doc's. this is my file structure of my app: pollquiz/ __init__.py show_pollquiz.html showpollquiz.py This is showpollquiz.py: from django import template from pollquiz.models import PollQuiz, Choice register = template.Library() @register.inclusion_tag('show_pollquiz.html') def show_poll(): poll = Choice.objects.all() return { 'poll' : poll } html file: <ul> {% for poll in poll <li>{{ poll.pollquiz }}</li> {% endfor </ul> in my base.html file im am including like this {% load showpollquiz %} and {% poll_quiz %} Bu then I get the the error: Exception Value: Caught an exception while rendering: show_pollquiz.html I have no idea why this happens. Any ideas? Please keep in mind Im still new to Django

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• What is the purpose of Managers / Transactions?

  - by maxdj

  I'm building a spring application for the first time. I'm running into lots of problems with concurrency, and I suspect that there is something wrong with the way I'm managing the backend. The only difference I can see between my backend code and examples I've seen are manager classes. In my code, I have my model (managed by hibernate) and my DAOs on top of that to do CRUD/searching/etc on the models. In example code I have looked at, they never use the DAO directly. Instead, they use manager classes that call the DAOs indirectly. To me, this just seems like pointless code duplication. What are these manager classes for? I've read that they wrap my code in "transactions," but why would I want that?

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• Drupal Custom Form with Filters

  - by dallasclark

  I'm displaying cars on a page created with a view and displays. I want to be able to create a form on the home page to allow people to select the 'make', which will then update the 'models' list based on the 'make' the user selects, 'year' to and from, and 'amount' to and from. What the user selects will of course alter the list of used cars, whether that's on the existing used cars page or a new page. I would be happy to create a custom module if required, just need some direction. Thanks !

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• silverlight for .NET / CLR based numerical computing on osx

  - by Jonathan Shore

  I'm interested in using F# for numerical work, but my platforms are not windows based. Mono still has a significant performance penalty for programs that generate a significant amount of short-lived objects (as would be typical for functional languages). Silverlight is available on OSX. I had seen some reference indicating that assemblies compiled in the usual way could not be referenced, but not clear on the details. I'm not interested in UIs, but wondering whether could use the VM bundled with silverlight effectively for execution? I would want to be able to reference a large library of numerical models I already have in java (cross-compiled via IKVM to .NET assemblies) and a new codebase written in F#. My hope would be that the silverlight VM on OSX has good performance and can reference external assemblies and native libraries. Is this doable?

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• Trying to Nullify Django model fields with method where model and fields are parameters

  - by Johnny4000

  I'm trying to write a method like the below where a list of fields (a subset of all the fields) is passed in as a parameter and has their column values set to null. I would be happy of I could get a method with just the fields as a parameter like below, but having the model as a parameter would be even better. from my_project.my_app.models import MyModel def nullify_columns (self, null_fields): field_names = MyModel._meta.get_all_field_names() for field in field_names: if field in null_fields: # The below line does not work because I'm not sure how to # dynamically assign the field name. MyModel.objects.all().update( (MyModel.get_field(field).column) = None) Right now I have something like if 'column1' in list_of_fields: MyModel.objects.all().update(column1 = None) if 'column2' in list_of_fields: MyModel.objects.all().update(column2 = None) etc. which is horrible, but works.

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• Symfony Jobeet Tutorial Day 3, databases.yml error

  - by Tony

  Hi all, I'm new to Symfony and I'm going through the Jobeet tutorial v1.4 for Doctrine. I am currently stuck on Day 3. I've followed all the instructions on configuring the database and building models and modules; however, when I try to access "http://localhost:8080/frontend_dev.php" I receive the following error: 'Configuration "config/databases.yml" does not exist or is unreadable.' My config/databases.yml file looks like this: all: doctrine: class: sfDoctrineDatabase param: dsn: 'mysql:host=localhost;dbname=jobeet' username: root password: mysecret Creating the tables and loading the fixtures seem to work fine after checking the database with phpmyadmin. Any help would be appreciated. Thank you!

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• How can I set MAXLENGTH on input fields automatically?

  - by Gary McGill

  I'm using ASP.NET MVC RC2. I have a set of classes that were auto-generated "Linq-to-SQL Classes", where each class models a table in my database. I have some default "edit" views that use the neat-o Html.TextBoxFor helper extension to render HTML input fields for the columns in a table. However, I notice that there is no MAXLENGTH attribute specified in the generated HTML. A quick google shows that you can add explicit attributes using TextBoxFor etc. but that would mean that I need to hard-code the values (and I need to remember to do it for every input). This seems pretty poor, considering that everything was automatically generated directly from the DB, so the size of the columns is known. (Although, to be fair, the web-side stuff has to work with any model objects, not just with Linq-to-SQL objects). Is there any nice way of getting this to do the right thing?

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• My first .net web app - should I go straight to MVC framework (c.f. ASP.net)

  - by Greg

  Hi, I'm done some WinForms work in C# but now moving to have to develop a web application front end in .NET (C#). I have experience developing web apps in Ruby on Rails (& a little with Java with JSP pages & struts mvc). Should I jump straight to MVC framework? (as opposed to going ASP.net) That is from the point of view of future direction for Microsoft & as well ease in ramping up from myself. Or if you like, given my experience to date, what would the pros/cons for me re MVC versus ASP.net? thanks

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• ASP.net MVC - OneToOne relationship with pluralized nomenclature

  - by ludicco

  Hi, I have an OneToOne relationship between my models Account and Company the table names are Accounts and Companies respectively. Here is a brief screenshot of the structure: http://cl.ly/1AEU Everything works well, but mysteriously when I use the OneToOne associations I have accessors like: var db = new DB(); var account = db.Accounts.First(); var company = account.Companies; // note the plural not the singular accessor So, what's happing is that even if using OneToOne association, I still get the plural accessor with "companies" and not "company", if it this is a pure object representation and not an EntitySet generated in case when it s an oneToMany relationship. Is there a way to get this nomenclature to be applied properly? Thanks a lot

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