Ruby: convert proc to lambda?
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ruby
Combining Two Models in Rails for a Form
I'm very new with rails and I've been building a CMS application backend. All is going well, but I would like to know if this is possible? Basically I have two models: @page { id, name, number } @extended_page { id, page_id, description, image } The idea is that there are bunch of pages but NOT ALL pages have extended_content. In t...
Execute script with Ruby on Rails?
I want to start my daemon with my application. In the command line, I can write something like lib/daemons/mydaemon_ctl start to start up my daemon, but I have to do this manually. I want the daemon to start when I start my server (i.e. when the initializer files are loaded). Is there a ruby command for executing a command line? Someth...
Pushing app to heroku problem
I am trying to push my app to heroku and I get the following message: $ heroku create Creating electric-meadow-15..... done Created http://electric-meadow-15.heroku.com/ | [email protected]:electric-meadow-1 5.git $ git push heroku master ! No such app as fierce-fog-63 fatal: The remote end hung up unexpectedly It's weird that I am...
Stop daemon with server in Ruby on Rails
I have a daemon that I'm starting along with the server using an initializer file. I want to stop this daemon once the server stops, but I'm not sure where to put a script that would run when the server stops. Initializers get automatically loaded when the server starts. Is there a similar "destroyers" folder? Where would I put code tha...
merging arrays of hashes
I have two arrays, each holding arrays with attribute hashes. Array1 => [[{attribute_1 = A}, {attribute_2 = B}], [{attribute_1 = A}, {attribute_4 = B}]] Array2 => [{attribute_3 = C}, {attribute_2 = D}], [{attribute_3 = C, attribute_4 = D}]] Each array in the array is holding attribute hashes for an object. In the above example, the...
Rexml - Parsing Data
I have a XML File in the following format: <?xml version='1.0' encoding='UTF-8'?> <entry xmlns='http://www.w3.org/2005/Atom' xmlns:gwo='http://schemas.google.com/analytics/websiteoptimizer/2009' xmlns:app='http://www.w3.org/2007/app' xmlns:gd='http://schemas.google.com/g/2005' gd:etag='W/"DUYGRX85fCp7I2A9WxFWEkQ."'><id>https...
regular expression for emails NOT ending with replace script
I'm currently modifying my regex for this: http://stackoverflow.com/questions/2782031/extracting-email-addresses-in-an-html-block-in-ruby-rails basically, im making another obfuscator that uses ROT13 by parsing a block of text for all links that contain a mailto referrer(using hpricot). One use case this doesn't catch is that if the us...
Access attributes/methods comments programmatically in Ruby
Is there a way for programmatically accessing a method comments? or an attribute comments? I would like to use it as a description for the method in a documentation which I don't want to be static or generated with rdoc or equivalent. Here is an example of a Ruby class: Class MyClass ## # This method tries over and over until it i...
image url helper for sinatra?
I'm looking for an image url helper for sinatra that allows me to do something similar to staticmatic's, where I can shortcut to a relative path like so... =img "me.jpg" Can anybody point me in the direction to where this might be online, or where I could learn how to write one, or provide an example of one they have already written ...
Is this type of calculation to be put in Model or Controller?
i have Product and SalesOrder model (to simplify, 1 sales_order only for 1 product) Product has_many :sales_orders SalesOrder belongs_to :product pa = Product A #2000 so1 = SalesOrder #1 order product A #1000, date:yesterday so2 = SalesOrder #2 order product A #999, date:yesterday so3 = SalesOrder #3 order product A #1000, date:now...
How to do a Switch based on controller with ruby on rails?
How could one do switch in ruby on rails something like: case controller "home" do home case controller "about" do about else do home I currently have this code: <% case current_page(:controller) %> <% when "forums" %> <%= render :partial => 'shared/sidebar/sidebar_forums' %> <% when "events" %> ...
Get absolute (base) url in sinatra.
Right now, I do a get '/' do set :base_url, "#{request.env['rack.url_scheme']}://#{request.env['HTTP_HOST']}" # ... haml :index end to be able to use options.base_url in the HAML index.haml. But I am sure there is a far better, DRY, way of doing this. Yet I cannot see, nor find it. (I am new to Sinatra :)) Somehow, outside of...
What's the best way to do Ruby gemspec creation and dependency management?
Over the last few months, there have been a number of rapid developments in the state of Ruby dependency management and gem creation, to the point where I've been having trouble keeping up with everything. If I'm writing a new gem, what's the best tool for me to use to create my gemspec? Are there disadvantages of using this tool over ...
Determining which video format to use
I want to upload a video file and convert it to flash and 3gp/mp4. No problem, plenty of tuts for this out there using paperclip and ffmpeg. For some reason I thought there was a tut that showed if std browser play flv but if mobile then use 3gp/mp4 but can't seem to find it. Any one know if there is a tut like this out there? Else, ...
Why doesn't every, and I mean it, language have this feature?
Some time ago I had a look into Ruby and one of the things which stood out most for me was the way of using symbols. While you to use defines or strings like in C++ or Python as an alternative, in Ruby you just write :mySymbol and the interpreter takes over the enumeration for you. I can't see any disadvantage this feature has, so why...
parsing position files in ruby
I have a sample position file like below. 789754654 COLORA SOMETHING1 19370119FYY076 2342423234SS323423 742784897 COLORB SOMETHING2 20060722FYY076 2342342342SDFSD3423 I am interested in positions 54-61 (4th column). I want to change the date to be a different format. So final outcome will be: ...
Optional parens in Ruby for method with uppercase start letter?
I just started out using IronRuby (but the behaviour seems consistent when I tested it in plain Ruby) for a DSL in my .NET application - and as part of this I'm defining methods to be called from the DSL via define_method. However, I've run into an issue regarding optional parens when calling methods starting with an uppercase letter. ...
redirect error and recursive login screen/auth screen problems with facebooker iframe
i am using the facebooker gem from http://github.com/mmangino/facebooker for developing a rails 2 facebook application (iframe). i am wondering if this is a bug from facebooker: when i am using ensure_application_is_installed_by_facebook_user in the application controller, the iframe gets rendered in an infinite loop. i found out tha...
remove field name from object validation message
I've got a simple active record validation on an object using this within a form: form.error_messages({:message => '', :header_message => ''}) This in turn outputs something like "FieldName My Custom message" What i need to do is remove the field name from the error message but leave my custom message. Can anyone point me in the r...