EventMachine 0.12.10 is known to not work under Ruby 1.9.2 on Windows. Please try latest 1.x pre-release versions: gem install eventmachine –pre If you’re using with Thin, latest version of Thin works with it properly. This has been discussed on RubyInstaller group several times.
If you’re using Mongoid 3, it provides easy access to its MongoDB driver: Moped. Here’s an example of accessing some raw data without using Models to access the data: db = Mongoid::Sessions.default # inserting a new document collection = db[:collection_name] collection.insert(name: ‘my new document’) # finding a document doc = collection.find(name: ‘my new document’).first # … Read more
If you need extra functions in your view, you normally declare those inside a helper. For each controller, if there is a helper it is automatically loaded. For instance, if you have a PeopleController, in the app/helpers folder, there should be a people_helper.rb, and it should look like this module PeopleHelper def name #do something … Read more
Just for the sake of completeness, even though previous answers already show good enough suggestions. You can utilize Paperclip event handlers instead of Rails callbacks. In this case, size will be recalculated only when image changes. (If you’re using S3 for storage, this can save quite some time) has_attached_file :image, :styles => … after_post_process :save_image_dimensions … Read more
It’s a matter of convention. The really important thing is consistency. Most (but not all) developers prefer spaces to tabs because they look the same regardless of any particular text editor / ide setting. http://www.ecyrd.com/JSPWiki/wiki/WhyTabsAreEvil Two spaces over four is also a matter of convention. Ruby code aims to minimize extra characters, and I suppose … Read more
I believe the issue is that when you cache the fragment in your view, a cache digest is being added to the cache key (views/all_available_releases/41cb0a928326986f35f41c52bb3d8352), but expire_fragment is not using the digest (views/all_available_releases). If you add skip_digest: true to the cache call in the view it should prevent the digest from being used. <% cache … Read more
Update: Yeah this answer came from ignorance and then seemed to gain traction. Anyway, the real answer can be found in Austen Tomek’s answer Hacked around this by doing chmod 777 on the tmp directory so I am guessing it is my ignorance on the user/permissions settings.
I also met that exact same error after I upgraded rails from 4.0.3 to 4.0.4. To solve solve this problem, only add gem “sass-rails”, “~> 4.0.2” to your Gemfile and then bundle install Finally restart rails server Then enjoy your programming in rails 4.0.4
When you generate a model, you get a model as well as some related components. One of my favorite ways of explaining topics like this is to actually try it out or encourage others to try it, so if I were to enter the command rails generate model Foo name:string description:text within a Rails project, … Read more
From the documentation: The rake db:reset task will drop the database, recreate it and load the current schema into it. This is not the same as running all the migrations. It will only use the contents of the current schema.rb file. If a migration can’t be rolled back, ‘rake db:reset’ may not help you. To … Read more