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• functional test for rails controller privaet method

  - by mohit

  I have a private method in my controller. which is used for some database update. this method i am calling from another controller method. and it works fine. But when i am trying to write a test case for that method then It is tripping on accessing (session variable and params) in my functional all other methods are working fine the problem is only with private method? In my setup method in functional test, I am setting session also.?

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• How does Rails find models and controllers? How can I get it to load more models?

  - by David

  I'm trying to create a non-ActiveRecord model in app/models/gamestate.rb. Then inside my controller (PlayController) I should be able to do GameState.new, right? No go: NameError (uninitialized constant PlayController::GameState): app/controllers/play_controller.rb:23:in `play' (at least in the development environment) But! If I do have a model called app/models/play.rb, then it's automatically loaded and I can do Play.new. So my question is: how does Rails know which classes to load? What sort of name mangling does it do to get from play#action to PlayController to app/controllers/play_controller.rb to app/models/play.rb? It seems awfully fragile, but maybe a better understanding of how this works would help. And finally, how can I get it to load app/models/gamestate.rb?

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• Rails: Mark a class as NOT reloadable

  - by reto

  I've got a few classes in lib/ which are not reloadable (due to their internal structure, its a jruby application). How can I tell rails to not reload these after each and every request? Thanks!

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• Skip HTML escape in custom label_tag helper in Rail 3

  - by tricote

  Hi, I have this nice class ErrorFormBuilder that allows me to add the error description near the corresponding field in the form view : class ErrorFormBuilder < ActionView::Helpers::FormBuilder #Adds error message directly inline to a form label #Accepts all the options normall passed to form.label as well as: # :hide_errors - true if you don't want errors displayed on this label # :additional_text - Will add additional text after the error message or after the label if no errors def label(method, text = nil, options = {}) #Check to see if text for this label has been supplied and humanize the field name if not. text = text || method.to_s.humanize #Get a reference to the model object object = @template.instance_variable_get("@#{@object_name}") #Make sure we have an object and we're not told to hide errors for this label unless object.nil? || options[:hide_errors] #Check if there are any errors for this field in the model errors = object.errors.on(method.to_sym) if errors #Generate the label using the text as well as the error message wrapped in a span with error class text += " <br/><span class=\"error\">#{errors.is_a?(Array) ? errors.first : errors}</span>" end end #Add any additional text that might be needed on the label text += " #{options[:additional_text]}" if options[:additional_text] #Finally hand off to super to deal with the display of the label super(method, text, options) end end But the HTML : text += " <br/><span class=\"error\">#{errors.is_a?(Array) ? errors.first : errors}</span>" is escaped by default in the view... I tried to add the {:escape = false} option : super(method, text, options.merge({:escape => false})) without success Is there any way to bypass this behavior ? Thanks

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• work with rescue in Rails

  - by Adnan

  Hi, I am working with the following piece; def index @user = User.find(params[:id]) rescue flash[:notice] = "ERROR" redirect_to(:action => 'index') else flash[:notice] = "OK" redirect_to(:action => 'index') end Now I either case whether I have a correct ID or not, I am always getting "OK" in my view, what am I doing wrong? I need that when I have no ID in the DB to show "ERROR". I have also tried to use rescue ActiveRecord::RecordNotFound but same happens. All help is appreciated.

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• Delete records from table which matches the data in an array?

  - by Maxsy

  I have a table of 2 fields. Word and timestamp. Then i have this array which contains some words. How do i delete all the records in the table which match with the words in the array? Suppose that the model is called "Word". Any ideas on how to achieve this? maybe loop through the array and run some destroy queries. Can anybody direct me here? thanks

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• Changing the id parameter in Rails routing

  - by japancheese

  Hello, Using rails3 new routing system, is it possible to change the default :id parameter resources :users, :key => :username come out with the following routes /users/new /users/:username /users/:username/edit ...etc I'm asking because although the above example is simple, it would be really helpful to do in a current project I'm working on. Is it possible to change this parameter, and if not, is there a particular reason as to why not?

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• Rails ActiveRecord: Find All Users Except Current User

  - by SingleShot

  I feel this should be very simple but my brain is short-circuiting on it. If I have an object representing the current user, and want to query for all users except the current user, how can I do this, taking into account that the current user can sometimes be nil? This is what I am doing right now: def index @users = User.all @users.delete current_user end What I don't like is that I am doing post-processing on the query result. Besides feeling a little wrong, I don't think this will work nicely if I convert the query over to be run with will_paginate. Any suggestions for how to do this with a query? Thanks.

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• Remove unncessary error raised by paperclip - filename is not recognized by the 'identify' command.

  - by kgpdeveloper

  I've been searching on how to solve this issue but could not find any real and working solution. User model: validates_attachment_content_type :avatar, :content_type = ['image/jpeg', 'image/pjpeg', 'image/x-png', 'image/png', 'image/gif'] Unnecessary error shows up when invalid file type is uploaded: Avatar /tmp/sample,23283,0.txt is not recognized by the 'identify' command. Server details: Ubuntu and Debian which identify results to /usr/bin/identify Specifying command path does not solve the issue: Paperclip.options[:command_path] = "/usr/bin" Any ideas? I looked at geometry.rb file and there seems to be something wrong with it. def self.from_file file file = file.path if file.respond_to? "path" geometry = begin Paperclip.run("identify", %Q[-format "%wx%h" "#{file}"[0]]) rescue PaperclipCommandLineError "" end parse(geometry) || raise(NotIdentifiedByImageMagickError.new("#{file} is not recognized by the 'identify' command.")) end Let me know if anyone has solved the same issue and how. Many thanks.

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• RoR - Polyline in GoogleMaps

  - by Arwed

  I'm using Ym4r and want to add a polyline to my map. This works: polyline = GPolyline.new([[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]],"#ff0000",3,1.0) @map.record_init @map.add_overlay(polyline) But this doesn't: polystring = "[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]" polyline = GPolyline.new([polystring],"#ff0000",3,1.0) @map.record_init @map.add_overlay(polyline) Any idea why? Regards Arwed

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• Superclass mismatch for class MysqlAdapter

  - by Bragaadeesh

  Hi, I am facing the below error when I try to run my migration in Rails. I did a google on this error but I cannot find the exact solution. Please help me. If it helps, I am using JRuby. I checkedout this project and the frozen rails version points to 2.3.5 Thanks

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• increase a field value based on the radio button selection

  - by sts

  <% count = 1 % <% for question in @questions % <%=count%. <%= question.title if question.title% <% for response in @response % <% if response.question_id.eql?(question.id) % <%=radio_button(count, :voting, :count_modification) % <%= response.nomination % <% end % <% end % <% count += 1 % <% end % This is my whole code to implment the survey in views. if i give the count as third argument in radio button i cant select answer for each question. i can select only one answer for the whole survey.

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• Modifying association arrays on cloned ActiveRecord objects

  - by Craig Walker

  I have an ActiveRecord model class Foo that has_many Bar. I want to clone a Foo (to get duplicates of most of its attributes) and then modify its Bar instances. This is a problem because cloned ActiveRecord instances share the same associated array; changes to one affect the other. f1 = Foo.new b = Bar.new f1.bars << b f2 = f1.clone f2.bars.includes? b # true f1.bars.clear f2.bars.includes? b # now false The real problem is that I can't detach the bars arrays from either Foo: f1.bars << b f2.bars.includes? b # true f2.bars = [] f2.bars.includes? b # now false f1.bars.includes? b # now also false If I could do that, then I could replace the Bars as I wanted to. However, any change to one Foo seems to affect the other.

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• rails validation of presence not failing on nil

  - by holden

  I want to make sure an attibute exists, but it seems to still slip thru and I'm not sure how better to check for it. This should work, but doesn't. It's a attr_accessor and not a real attribute if that makes a difference. validates_presence_of :confirmed, :rooms {"commit"=>"Make Booking", "place_id"=>"the-kosmonaut", "authenticity_token"=>"Tkd9bfGqYFfYUv0n/Kqp6psXHjLU7CmX+D4UnCWMiMk=", "utf8"=>"✓", "booking"=>{"place_id"=>"6933", "bookdate"=>"2010-11-22", "rooms"=>[{}], "no_days"=>"2"}} Not sure why my form_for returns a blank hash in an array... <% form_for :booking, :url => place_bookings_path(@place) do |f| %> <%= f.hidden_field :bookdate, { :value => user_cart.getDate } %> <%= f.hidden_field :no_days, { :value => user_cart.getDays } %> <% for room in pricing_table(@place.rooms,@valid_dates) %> <%= select_tag("booking[rooms][][#{room.id}]", available_beds(room)) %> <% end %> <% end %>

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• Parsing a CSV File to a Rails Database

  - by Schroedinger

  G'day guys, I'm using fasterCSV and a rake script to parse a csv with about 30 columns into my rails db for a 'Trade' item. The script works fine when all of the values are set to strings, but when I change it to a decimal, int or other value, everything goes to hell. Wondering if fasterCSV has built in int etc parsing or whether I'll have to manage these within my model. Basically, I'm given a giant amount of trades data, need to import it, and then need to provide feedback with say the average trade volume, the times, etc. I understand I can do that all with the wonderful records provided to me by activeRecord but wondered if there was an easier way to populate a rather large Database with a given CSV? Several of the fields don't have values for certain rows, fasterCSV seems to work perfectly when they're all strings, but not when I try to get decimal or other.

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• Dynamically defined setter methods using define_method?

  - by nicosuria

  I use a lot of iterations to define convenience methods in my models, stuff like: PET_NAMES.each do |pn| define_method(pn) do ... ... end but I've never been able to dynamically define setter methods, ie: def pet_name=(name) ... end using define_method like so: define_method("pet_name=(name)") do ... end Any ideas? Thanks in advance.

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• Acts as Tree with Multiple Models

  - by Joe

  I've got several models that I'd like to relate together hierarchically. For simplicity's sake, let's say I've got these three: class Group < ActiveRecord::Base acts_as_tree has_many :users end class User < ActiveRecord::Base acts_as_tree belongs_to :group has_many :posts end class Post < ActiveRecord::Base acts_as_tree belongs_to :user end Under the current acts_as_tree, each node can individually can relate hierarchically to other nodes provided they are of the same type. What I'd like is to remove this restriction on type identity, so that SomePost.parent could have a User or a Post as its' parent, and that SomeUser.parent could have another user or a group as its parent. Any thoughts?

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• Concatenate arrays items

  - by j.

  I have two arrays: x = [ [0, "#0"], [1, "#1"] ] y = [ [00, "00 description"], [10, "10 description"] ] What i need is to merge them so i get the following as result: result = [ [000, "#0 00 description"], [010, "#0 10 description"], [100, "#1 00 description"], [110, "#1 10 description"]] Is there a method for that? Or I'll need to use collect or something like this? Thanks in advance.

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• How to make Rails caches_page survive a capistrano deploy?

  - by aaronrussell

  Is it possible to configure Rails so caches created with caches_page survive a Capistrano deploy? Ie, can I configure the cache to be saved into a shared directory rather than in the public directory?

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• What exactly is Arel in Rails 3.0?

  - by Will

  I understand that it is a replacement for ActiveRecord and that it uses objects instead of queries. But... why is this better? will objects/queries be "easier" to create? will it lead to more efficient SQL queries? will it be compatible with all major DB's? - I assume it will. will it be easier/harder to use with stored procedures?

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• Rails Tableless Model

  - by mplacona

  I'm creating a tableless Rails model, and am a bit stuck on how I should use it. Basically I'm trying to create a little application using Feedzirra that scans a RSS feed every X seconds, and then sends me an email with only the updates. I'm actually trying to use it as an activerecord model, and although I can get it to work, it doesn't seem to "hold" data as expected. As an example, I have an initializer method that parses the feed for the first time. On the next requests, I would like to simply call the get_updates method, which according to feedzirra, is the existing object (created during the initialize) that gets updated with only the differences. I'm finding it really hard to understand how this all works, as the object created on the initialize method doesn't seem to persist across all the methods on the model. My code looks something like: def initialize feed parse here end def get_updates feedzirra update passing the feed object here end Not sure if this is the right way of doing it, but it all seems a bit confusing and not very clear. I could be over or under-doing here, but I'd like your opinion about this approach. Thanks in advance

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• Path parsing in rails

  - by fl00r

  Hi! I am looking for method for parsing route path like this: ActionController::Routing.new("post_path").parse #=> {:controller => "posts", :action => "index"} It should be opposite to url_for Upd I've found out: http://stackoverflow.com/questions/2222522/what-is-the-opposite-of-url-for-in-rails-a-function-that-takes-a-path-and-genera ActionController::Routing::Routes.recognize_path("/posts") So now I need to convert posts_path into "/posts"

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• adding custom fields dynamically to a model

  - by pankajbhageria

  I have a model called List which has many records: class List has_many :records end class Record end The table Record has 2 permanent fields: name, email. Besides these 2 fields, for each List a Record can have 'n' custom fields. For example: for list1 I add address(text), dob(date) as custom fields. Then while adding records to list one, each record can have values for address and dob. Is there any ActiveRecord plugin which provides this type of functionality? Or else could you share your thoughts on how to model this? Thanks in advance, Pankaj

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• CSRF protection and cross site form access

  - by fl00r

  Hi. I aw working on cross site authentication (some domains have got common authentication). So I want to send authentication data (login, password) to main domain from others. How should I use protect_from_forgery and how can I check if data received from valid domain? What I am thinking now is to turn off protect_from_forgery for session controller and check domain name of received data. But maybe I can configure CSRF protection for not only one domain?

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• Design an api using rails and change the forgot password functionality

  - by ragupathi

  I have been using rails for developing web applications and now i need to do design an api for iphone application and since i used respond to json it also produces json but i use devise for authentication in my web application and when i send email and password along with the api it gives out {"user":{"authentication_token":"Lsusyd27ewgasga63","email":"[email protected]"}} and there is forgot password functionality in the iphone app but in the web application when clicking on forgot password button it sends an email to the users email, whereby the user has to go to his mail and click on the link sent and it will take to the change password path and after changing it the user will be login but in this iphone app i want to send the password to the user mail and the user can use that password and login. How can i do this? Also do i have to create new controllers for api or the web application controller is enough if it respond as json? please help me.

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