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• Working for international NGO's as a programmer

  - by Keyslinger

  I have begun a career as a web application and database developer while slowly discovering the passion I have for work in the international development sector. Since this is not the most obvious line of work for someone with my credentials, it seems to me that special care must be taken in order to court international non-governmental organisations (NGOs) and position myself in the field. Aside from adding grant-writing to my skill set and getting volunteer experience, what indispensable advice do you have for a fledgling programmer who wants to save the world?

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• Du 22 au 24 aout, venez programmer un jeu vidéo sur le chat de Developpez.com

  Du 22 au 24 aout, venez programmer un jeu vidéo sur le chat de Developpez.comAmies programmeuses, amis programmeurs,La quatrième édition arrive enfin ! J'ai l'honneur de vous annoncer que vous pouvez dès à présent réserver le week-end du 22 au 24 août pour développer un jeu vidéo avec les membres de Developpez.com. Préparez-vous, commandez les pizza, faites un stock de red bull, expulsez votre copain/copine (sauf s'il/elle sait dessiner), car vous allez passer un week-end intense pour réaliser un...

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• Should a programmer be indispensable?

  - by Tim

  As a programmer or system administrator, you could either strive to have your fingers in every system or to isolate yourself as much as possible to become an easily-substituted cog. Advantages of the latter include being able to take vacations and not being on call, while the former means that you'd always have something to do and be very difficult to fire. Aiming for either extreme would require a conscious effort. Except for the obvious ethical considerations, what should one strive for?

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• what is the best age for programmer to hire [on hold]

  - by Mohamed Ahmed

  I'm graduated from Information systems institute since 2004 and I worked as a ICDL Instructor , but I know some SQL Server good and Database Design , now I'm in 30 age , and I want to start study computer programming and get MCSA SQL Server and MCSE certificates , but I have feel I'm old to start and the companies will not accept me for that reason and also because I don't have any experience yet in the field , I will start like a fresh graduated in 21 or 22 age , please help me what is the best age for programmer for accepted , and the age and late start will be a big obstacle for me or not

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• When does a "scripter" become a "programmer"?

  - by makerofthings7

  Is there a difference between 'scripters' and 'programmers'? What is the dividing line between scripters and programmers? Perhaps all scripters be considered to be a programmer. If not all scripters can fall into the same camp, what about those people who use external objects such as COM objects, Win32's, etc. via an interop library? As far as script languages I'm thinking of are (but not limited to) perl, bash, javascript, powershell, and batch files.

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• Taking too long to get skills for entry level programmer position [closed]

  - by greenonion

  I don't have the skills for an entry level position as a .Net programmer. I am trying to learn what I need but there is too much to learn and too little time. What can I do? About two months ago, I went to a job interview for an entry level C# .Net programming/consultant position in NYC. When I heard back from them, they told me that the knowledge gap between what I knew and what they needed me to know was too big and I might have been a better fit if I had 6 months of experience. This was the first interview that I went on since graduating college. before the interview, I read a book on visual C#. Turns out it wasn't a very good book and I was missing a lot of key areas of knowledge such as ADO.net SQL (I had learned some LINQ) A little bit about how memory is handled Multiple threaded programming, etc. Because the book wasn't very good, the stuff I did know, I didn't know very well. I felt crushed. I've applied for jobs to gain experience but when recruiters hear that I have no experience they lose interest. I figured that I can at least work on my knowledge. Since then, I read "SQL Essentials" to cover the SQL bit and I found a pretty awesome book that is good enough to clear up what's hazy in my mind and covers almost all of the extra topics. The book is "C# 4.0: The Complete Reference" by Herbert Schildt. I'm even learning a lot about the topics I was familiar with. For a month now I've been working my way through this beast of a book. However, gaining the knowledge I need is taking too long. I can't hold off not having a full-time job much longer. I'm not stupid and I'm studying constantly pouring through the book, asking questions on stackoverflow, referencing the C# specification, etc. I have made great progress but there is just too much ground to cover. I'm on chapter 12 which is about a 3rd through the book. To get an idea of what I know vs don't know, the table of contents is on amazon: http://www.amazon.com/C-4-0-The-Complete-Reference/dp/007174116X How on earth can someone know enough to function as a programmer in the real world? Can I try for a job in academia? Will I have time to finish learning the rest of the C# language or am I just un-hireable?

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• Ruby on Rails deployment, on "thin" server with lot of attachments

  - by Horace Ho

  A lot of PDFs are stored inside MySQL as a BLOB field for each PDF file. The average file size is 500K each. The Rails app will stream the :binary data as file downloads, where there is a user click on the download link. Assume there is a maximum of 5 users downloading 5 PDFs concurrently, what kind of deployment setup parameters I should be aware of? e.g. for the case of thin: thin start --servers 3 whether --servers 3 is good enough (or 5 or more is needed) for the above example? The 2nd question is whether 'thin' a capable solution? Thanks!

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• Rails: savage_beast forum plugin and tinymce - new post works but edit doesn't use tinymce properly

  - by Max Williams

  Hi all. I'm using the savage_beast forum plugin and tinymce (via the tinymce_hammer plugin) in my rails app. When posting a new post, tinymce works fine. However, when i go to edit a post i get the tinymce editor, but the content in the edit box has all been converted into html. Can anyone tell me how i get it so that what appears in the tinymce edit box is the original text i posted, rather than the converted-to-html version? Does it need to get converted back from html into a format tinymce will use? Savage_beast saves the original given text in a body field, and the converted-to-html text in a body_html field. After tinymce does its work in the first instance (ie when posting a new post) the body field gets text that's already been converted to html. So i guess i need to convert it back to whatever tinymce expects? I'd expect tinymce to be happy with getting html, and to just handle it, though. grateful for any advice - max

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• Normal memory usage in Rails

  - by Erik

  I'm wondering how much memory usage is normal for a ruby process in a rails application? I really need something to benchmark against. In my dev environment WEBrick a single ruby process uses about 61mb to handle 10 simultaneous requests going non stop. In my prod environment Apache2+Passenger starts 7 ruby processes to handle the same ammount of requests. Each of those processes also use up about 60mb. Is this normal? Also, where do I configure how many ruby processes Passenger can start? Or will it start as many as there is memory available for? Thank you! ps. Using Rails3 beta. ds.

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• Rails cookie session sharing and "www.example.com" or "example.com" problem

  - by Rafael Mueller

  When people access my app on www.example.com and log in, they get a cookie. I'm using the cookie option to store session on Rails. Accessing example.com (without the www), they must log in again, because Firefox does not recognize the previous session. So, what do you think is the best way to avoid this? I guess I will use a small .htaccess rule (Apache + Passenger) like this: RewriteEngine on RewriteCond %{HTTP_HOST} ^example\.com RewriteRule ^(.*)$ http://www.example.com/$1 [R=permanent,L] Do you guys think that is a good solution?

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• Rails remove parent HTML tag

  - by gshankar

  It's pretty easy to sanitize HTML and strip ALL instances of a HTML tag using Rails helpers... But how do you just remove ONE tag? In this case, I'm using a WYSIWYG editor that insists on wrapping all my text in a <p> tag. I want to remove this parent tag without stripping out any other <p> tags within the content of the text. I know I could do this in JQuery really easily but I feel like this should be done server-side in my controller before I save the text. Is there a way to do this?

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• Ruby on Rails: having two xmlbuilder templates per action , one for errors one for regular output

  - by randombits

  What's the best way to handle having two templates (or should it be one, DRY?) for xml builder templates? I'm building a web api with Rails and wanted to see an example of how to have a view that does regular output vs one that does error output. I've been using @obj.to_xml for a while, but my requirements have changed and require me building my own error templates. do you typically have both views in one with a condition above for errors such as app/views/myresource/create.xml.builder unless @myobj.errors.empty? // xml for errors here? end // regular xml view

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• Michael Hartl's rails tutorial: reusing sessions resource for multiple User types

  - by ntaj

  I'm learning Ruby on Rails through Micheal Hartl's tutorial. In my web application, I require two types of Users, called publishers and subscribers. Currently I have a publishers resource and a subscribers resource. I'd like both of them to be able to use the sessions resource for signin/signout. I'm looking for some direction on how to implement this. Should my publisher and subscriber resource inherit from the User resource, so that, for example, the following code works through polymorphism? def create user = User.find_by_email(params[:session][:email]) if user && user.authenticate(params[:session][:password]) # Sign the user in and redirect to the user's show page. else # Create an error message and re-render the signin form. end end The publisher and subscriber do not have many common fields and different capabilities, so I think they should be modeled as two separate resources, but how to have them share the Sessions resource?

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• Formtastic nested model form fields (Rails 3)

  - by elsurudo

  So here's the scenario: User: has_one :company accepts_nested_attributes_for :company Controller: @user = User.new @user.build_company View: <% semantic_form_for @user, :url => register_path do |form| %> <h2>User Information</h2> <%= form.inputs %> <h2>Company Information</h2> <% form.semantic_fields_for :company do |company| %> <%= company.inputs %> <% end %> <%= form.buttons %> <% end %> After scouring the web, this SEEMS like it should work. However, all I get are the user inputs. The "semantic_fields_for :company" block outputs nothing at all... Am I missing something here, or is this perhaps a Rails 3 bug to do with Formtastic?

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• Rails: Open HTTP URL From HTTPS site

  - by Imran

  I have a rails application running on SSL. I also have setup Piwik (for analytics) and it is running non-secure i.e. HTTP. When I try to make a call to Piwik API from my ruby code (the application running on SSL) it gives me the following error: SocketError (getaddrinfo: Name or service not known): /usr/lib/ruby/1.8/net/http.rb:560:in initialize' /usr/lib/ruby/1.8/net/http.rb:560:inopen' /usr/lib/ruby/1.8/net/http.rb:560:in connect' /usr/lib/ruby/1.8/timeout.rb:53:intimeout' /usr/lib/ruby/1.8/timeout.rb:93:in timeout' /usr/lib/ruby/1.8/net/http.rb:560:inconnect' /usr/lib/ruby/1.8/net/http.rb:553:in do_start' /usr/lib/ruby/1.8/net/http.rb:542:instart' /usr/lib/ruby/1.8/net/http.rb:379:in get_response' app/controllers/piwik_charts_controller.rb:195:inmake_graph' It works perfect when I make call from an application running on HTTP. Please advise. Thanks, Imran

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• Automated testing with Ruby on Rails - best practices

  - by randombits

  Curious, what are you folks doing in as far as automating your unit tests with ruby on rails? Do you create a script that run a rake job in cron and have it mail you results? a pre-commit hook in git? just manual invokation? I understand tests completely, but wondering what are best practices to catch errors before they happen. Let's take for granted that the tests themselves are flawless and work as they should. What's the next step to make sure they reach you with the potentially detrimental results at the right time?

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• Rails migration to add boolean column to Postgres on Heroku

  - by pmc255

  I'm trying to execute a simple Rails migration to add a boolean column to an existing table. Here's the add_column call: add_column :users, :soliciting, :boolean, :null => false, :default => false However, after the migration runs (successfully, with no errors), I don't see the new column. If I go into the console and list the columns on the User table, for example, with this command: >> User.columns.each { |c| puts "#{c.name} : #{c.type}" } All the other columns show up, but not the one I just added with the migration. What's even more strange is that looking up a random user object yields the Postgres version of booleans (Ruby strings) >> User.find(1).soliciting => "t" However, the existing boolean columns all show up with standard Ruby boolean values of true and false. What's going on here? Is the migration actually complete? Why doesn't the column show up, yet is accessible in the model objects?

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• Rails ActionMailer problems on Mac

  - by seth

  I've been working on learning to use Rails the last couple days and I've run into something that I haven't been able to solve with Google. So I'm just creating a basic contact form that sends an email. Everything seems to be working ok in testing, which tells me that the form is working, and ActionMailer was implemented correctly, however, I'm having trouble configuring ActionMailer. I'm running OSX 10.6.2. I have postfix running and have verified that it's running using telnet localhost 25. When I try to use the form I get a "Connection refused" error. This is my current configuration: config.action_mailer.smtp_settings = { :address => 'localhost', :port => 25 } I thought I might need to set :domain but I'm kind of confused on what that should be set to in this situation.

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• Rails Associations Question

  - by Mutuelinvestor

  I'm new to rails and have volunteered to help out the local High School Track team with a simple database that tracks the runners performances. For the moment, I have three models: Runners, Race_Data and Races. I have the following associations. Runners have_many Race_Data Races have_many Race_Data I also want create the association Runners Have_Many Races Through Race_Data, but as my look at the diagram I have drawn, there is already a many to one relationship from Race_data to Races. Does the combination of Runners having many Race_Data and Race_Data having one Race imply a Many_to_Many relationship between Runners and Races?

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• Rails and Searchlogic: finding products that matching all given product categories by using searchlo

  - by Roland

  I have a model Publication and a model Category in my Rails app. Both are connected with a has_and_belongs_to_many association. Now I would like to search publications that match one or more categories. If more than one category is given they have all assigned to the publication. I want to specify the categories in a multiple select_box. Publication.released.categories_id_is([1,2]) is not working because the categories are connected with OR. With Publication.categories_id_is_all([1,2]) the categories are connected with AND, but no result is given back. Any idea's on that? Am I mising the right point in the docs. Thanks for your very welcome help!

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• Rails application settings?

  - by Danny McClelland

  Hi Everyone, I am working on a Rails application that has user authentication which provides an administrators account. Within the administrators account I have made a page for sitewide settings. I was wondering what the norm is for creating these settings. Say for example I would like one of the settings to be to change the name of the application name, or change a colour of the header. What I am looking for is for someone to explain the basic process/method - not necessarily specific code - although that would be great! Thanks, Danny

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• Connect rails application to SQL Server 2005 from Windows

  - by Enrico Carlesso

  Hi guys. I (sadly) have to deploy a rails application on Windows XP which has to connect to Microsoft SQL Server 2005. Surfing in the web there are a lot of hits for connect from Linux to SQL Server, but cannot find out how to do it from Windows. Basically I followed these steps: Install dbi gem Install activerecord-sql-server-adapter gem My database.yml now looks like this: development: adapter: sqlserver mode: odbc dsn: test_dj host: HOSTNAME\SQLEXPRESS database: test_dj username: guest password: guest But I'm unable to connect it. When I run rake db:migrate I get IM002 (0) [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified I'm not a Windows user, so cannot understand really well the meaning of dsn element or so. Does someone have an idea how to solve this? Thanks in advance With Alexander tips now I've modified my database.yml to: development: adapter: sqlserver mode: odbc dsn: Provider=SQLOLEDB;Data Source=SCADA\SQLEXPRESS;UID=guest;PWD=guest;Initial Catalog=test_dj;Application Name=test But now rake db:migrate returns me: S1090 (0) [Microsoft][ODBC Driver Manager] Invalid string or buffer length Am I missing something?

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• rails associations - How would you represent this relationship?

  - by truthSeekr

  Hello All, I am trying to figure out a best way to represent the following relationship. Newspaper-->has_many-->Articles Newspaper-->has_many--->Subscribers Subscribers are allowed to save the articles for their personal page. Two Questions: 1) How would the relationship look like in rails? How would the action 'save' look like? The following using has_many does not seem right to me: ArticleController < ApplicationController def save a = Article.find(101) @user.saved_articles << a end 2) Do I need a join table Saved_Articles that looked like this? Saved_Articles ---------------- user_id, article_id I am not sure how the has_many_through works. any advice is appreciated. thanks

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• MongoMapper, Rails, Increment Works in Console but not Controller

  - by Michael Waxman

  I'm using mongo_mapper 0.7.5 and rails 2.3.8, and I have an instance method that works in my console, but not in the controller of my actual app. I have no idea why this is. #controller if @friendship.save user1.add_friend(user2) ... #model ... key :friends_count, Integer, :default => 0 key :followers_count, Integer, :default => 0 def add_friend(user) ... self.increment(:friends_count => 1) user.increment(:followers_count => 1) true end And this works in the console, but in the controller it does not change the follower count, only the friends count. What gives? The only thing I can even think of is that the way that I'm passing the user in is the problem, but I'm not sure how to fix it.

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• How to reflect in the database a new belongs_to and has_many relationship in Ruby on Rails

  - by Ken I.

  I am new to rails (usually a python guy) and have just been trying to build a simple task manager application for fun. I am using Devise for authentication and have a single Task object I am trying to relate to a user. I have added the following to the Task model: class Task < ActiveRecord::Base belongs_to :user end and I have added the following in my User model for Devise: class User < ActiveRecord::Base has_many :dreams <<normal Devise stuff>> end Whenever I added this information I then ran: rake db:migrate. It then gave me an error that the database field did not exist for user_id when I tried to do anything with it. I am sure it is something rather simple that I am missing. Thanks for the help.

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