I have looked through the Ruby on Rails guides and I can't seem to figure out how to prevent someone from deleting a Parent record if it has Children. For example. If my database has CUSTOMERS and each customer can have multiple ORDERS, I want to prevent someone from deleting a customer if it has any orders in the database. They shoul...
I have a basic search page that replaces html in a div with the search results. Clicking on one of the search results brings up a detail page. And I have a link on that detail page that says "Go back to search results". My problem is that it just generates a link to the root_url. Is there a way I can generate a valid back link to thos...
I have been using the devise gem for rails and I have facebook login system working. My problem is that there is so much going on in the background that I find it difficult to customize this. For example how do I change the path to the page the user is redirects to after the first time facevbook login, not the usual facebook login. It a...
What i would like to do is when a user clicks an image of a horse that a checkbox is then set to true or false. I have an array of horses and each horse has a checkbox. The biggest problem I have is setting the ID of my checkbox element. I tried sth like. http://stackoverflow.com/questions/2360465/use-custom-id-for-check-box-tag-in-rai...
I am using: Event.observe(window, 'load', function() { $$('li').invoke('observe', 'mouseover', function(event) { this.children[0].toggle(); }); $$('li').invoke('observe', 'mouseout', function(event) { document.children[0].toggle(); }); }); <ul> <li> <div style="display:hidden;">Hidden Div</div> <div>More...
Need some help refactoring this if/else block that builds the conditions for a find query. if params[:status] && params[:carrier] conditions = ["actual_delivery IS NOT NULL AND actual_delivery > scheduled_delivery AND status_id = ? AND carrier_id = ?", status.id, carrier.id] elsif params[:status] conditions = ["actual_delivery IS NO...
I have some thinking-sphinx tests that I need to turn off transactions for to prevent mysql locks, but in doing so I break a lot of other tests previously written, so I need to be able to toggle the setting. I have found similar questions regarding rspec, but none for Test::Unit. I have tried self.use_transactional_fixtures = false whi...
I updated from 2.3.3 to 2.3.5 for the string to array bug, and now when I try to call Model.image.reprocess! I get the following error. Is this something in my code or something in paperclip? Or maybe in the image I'm uploading? "\xFF" from ASCII-8BIT to UTF-8 /home/brian/.rvm/gems/ruby-1.9.2-p0@sp/gems/paperclip-2.3.5/lib/paperclip/sto...
I'm working with Ruby on Rails 2.3.8 and I want users to login before accesing any content from the website. I've written the following in the application_controller before_filter :login_required When the app starts, I'm getting an error in the browser (not even from the application itself) saying it failed to redirect the page. And ...
Hi, I quickly ran into problems when trying to create an ActiveRecord instance that overrode initialize like this: class Email < ActiveRecord::Base belongs_to :lead def initialize(email = nil) self.email = email unless email.nil? end end I found this post which cleared up why it is happening. Is there anyway that I can avo...
Previously I ordered my posts as this : @posts = Post.find(:all, :order => "created_at DESC") But now I want to replace created_at with a custom method I wrote in the Post model that gives a number as its result. My guess: @posts = Post.find(:all, :order => "custom_method DESC") which fails.. ...
Let's say I have a string like so: "Lorem ipsum de color [post]57[/post] sit amet [post]103[/post] desectator." I want to find all occurrences of [post]*[/post] and replace it with the title of the post represented by the number. I'd end up with something like so: "Lorem ipsum de color Angry Turtle sit amet Fuzzy Rabit dese...
I am running ROR 3.0.1 with Ruby 1.9.2p0 on a Mac Mini with Snow Leopard 10.6.4. when I run rake db:migrate I get the following error /usr/local/lib/ruby/1.9.1/rubygems.rb:340:in bin_path': can't find executable rake for rake-0.8.7 (Gem::Exception) from /usr/local/bin/rake:19:in' I have uninstalled and reinstalled rake but I still ge...
Is there a command that tells you the other gems that a gem depends on? Also, is there a way to auto install the gem's dependencies? ...
I looked through a number of posts with similar titles but have not found an answer. In my application I want to allow editing Active records from an index view. This view uses link_to_remote for each row. When user presses the link the row should be replaced with a form that user may submit via Ajax. Table is displayed by sending a ...
I did a bunch of gutting to my default controllers and now I can't get my user_id to populate on create. I was curious how that gets populated. If you're interested, take a look at my routes, and model assocations, and then at then end I'll show you the resulting params..The end result is no user_id being added. routes resources :user...
I'm working on a pretty large data migration project which involves moving data between servers and different active record schemas. The whole migration literally takes days. How can I implement a caching solution where my Ruby migration code when it calls the Active Record save method writes to a cache (which then updates the MySQL da...
Short version: Where should I store environment-specific IDs? ENV['some-variable']? Somewhere else? Long version: Let's say I have a model called Books and a book has a Category. (For the sake of this question, let's say a book only has one category.) class Book < ActiveRecord::Base belongs_to :category end class Category < Acti...
Hello, I'm using rails 3 and am trying to use the in_place_editing plugin: http://github.com/wanglian/in_place_editing # Controller class BlogController < ApplicationController in_place_edit_for :post, :title end # View <%= in_place_editor_field :post, 'title' %> However I'm getting the error: id for nil, which would m...
Hi All, Once again I come to the best for my pedestrian question. I'm building a small web app that would be vastly improved by the ability to recognize app icons. I've searched all over but haven't found anything that suits my needs. Basic Experience: User uploads a screenshot We extract icons We return the name of the correspondin...