Hello, I was wondering if it was possible to use the find method to order the results based on a class's has_many relationship with another class. e.g. # has the columns id, name class Dog < ActiveRecord::Base has_many :dog_tags end # has the columns id, color, dog_id class DogTags < ActiveRecord::Base belongs_to :dog end and I w...
I'm following Railscast 88 to create a dynamic dependent dropdown menu. http://railscasts.com/episodes/88-dynamic-select-menus I'm rendering these dropdowns inside a partial that I'm using in a multi-model form. The form I'm using follows the Advanced Rails Recipes process by Ryan Bates. Because I'm rendering the dropdown inside a ...
I'm trying out OAuth for twitter api authentication and ran into a brick wall when my code spits out the message: (instance of OAuth::Consumer needs to have method `marshal_load') My code: @consumer=OAuth::Consumer.new( "token","secret", { :site=>"http://mysite.com/" }) @[email protected]_request_token session[:reque...
I want to conditionally switch on/off certain functionality in my Rails app, for example in my current app I have the following functionality "product show case", "product search", "ecommerce", "user management" etc If I implement the same app for someone else they probably might not want the ecommerce function, how do I disable the eco...
I have an existing Project record, and I'm importing a CSV file to update the associated Project attributes. However, often the CSV will contain blank fields and I don't want to overright exisiting attributes if the related CSV field is blank. Something like this: project.update_attributes(:name => row.field('project_name') unless row...
I am extending a class (which is in a plugin) by including a module, this is done in an initializer. require 'qwerty/core/user' User.send :include, Qwerty::Core::Extensions::User However in development before every request (and after reload! is called in the console) all models are reloaded but because the initializers are not run ag...
Hey, i thought about using observers or callbacks. What and when you should use an observer? F.e. you could do following: # User-model class User << AR after_create :send_greeting! def send_greeting! UserNotifier.deliver_greeting_message(self) end end #observer class UserNotifier << AR def greeting_message(user) ... ...
<%=yield%> works perfectly if my template is called layouts/application.erb. However, if I change the template to something else, then the yield doesn't work. For instance, my controller method is render :template=>'layouts/survey' and the right template gets rendered, but its yield method doesn't show the output of the current action...
Hi, I have a rails application in which I implemented some feature. Now I want to remove that feature without breaking the code. Since the application is running on the production server, this makes it a little bit critical. How do I do the following. remove all the tables from the database concerned with this functionality? remove th...
I need to use an existing PostGIS database from my Rails application. So far I am able to access the DB just fine, GeoRuby nicely converts the 'geom' column into a Point object. What I am looking for is an easy way to execute ActiveRecord-like queries on those tables, e.g. Poi.find_within_radius(...) or similar spatial queries like d...
In /initializers/time_formats.rb I have this: Time::DATE_FORMATS[:profile] = "%m / %d / %Y" However this obviously produces dates such as: 09 / 08 / 2001 Google tells me my best bet is to use some kind of gsub regular expression to edit out the 0's. Is this true or is there a better alternative? ...
I've always thought this sort of thing ugly: require File.join(File.dirname(__FILE__), 'hirb/config') Is there a prettier alternative, maybe one written for Rails? require_relative 'hirb/config' require_relative '../another/file' ...
I'm trying to create a form validation. I added @user.errors.add_to_base "TEST" to my controller, and if I call @user.valid?, it returns false (yes, this is correct). But the error "TEST" isn't displayed (errors from the model, like from validates_presence_of, are). Why does it 'delete' my error? How can I avoid it? ...
Hey, I'm getting the following error in my development.log [paperclip] An error was received while processing: #<Paperclip::NotIdentifiedByImageMagickError: /tmp/stream28514-0 is not recognized by the 'identify' command.> And i've googled about this error and i found out that many people have solved this by adding this line Pa...
I have a form that will not submit: <% form_for :venue, :html => { :id => "create_venue_form" } do |f| %> <%= render :partial => 'venues/venue_form_fields', :locals => { :f => f } %> <%= submit_to_remote 'add_venue_button', 'Save Venue', { :url => add_venue_path(@user.id), ...
Say I have Course that has_many Students. I also have def top_student in the Course class. I now have an active_scaffold on top of Course, but if I add top_student as a column it show shows #, but no link. I'd like a link to the Student who is the Top Student. Any way to make this happen? ...
How can I remove the div from authenticity_token in Ruby on Rails? Thanks. ...
Hi, Considering this: @article = Article.first(:joins => :category) Does ActiveRecord provides a generique method which return a array of any belongs to class name? For example: @article.name.parents # => ["category"] Thanks ...
Currently, I have a 6-model ruby on rails application, that I added authlogic to. The overall setup is User :has_many categories, topics,messages Categories has_many topics, Topics has_many messages (With and the corresponding opposite belongs_to links). When I try to access current_user.categories.find(2), no results are returned i...
I seem to be having some extremely odd cache_money interactions. When I am on the console, and I create a new instance of a class and save it I see the cache misses and cache stores on my memcached console output. Then when the create finishes I see a bunch of cache deletions. If I then try to do any kind of find for the newly created...