I\'m trying to join two tables and return all columns, not just the ones associated with the model. I have something like that looks like this开发者_如何学JAVA:
I am trying to upgrade my application from Rails 2.3.5 to Rails 3.0.3. Models: Project.rb has_many :project_roles, :dependent => :destroy
I have a class: class Technician < ActiveRecord::Base scope :named, lambda {|name| where([\"first_name LIKE ?\", \"%#{name}%\"])}
I\'m using rails3 with acl9 for authorization. I\'m trying to grok ARel and the rails way of querying.
I have class Authors has_many :books, :order => \'name ASC\' I am trying to query all the books sorted by name DESC
Do association methods, such as those defined by has_many and belongs_to utilize ActiveRecord::Relation?
For example, I have 2 models: Purchase (belongs_to :users) User (has_many :purchases) I want to select all users that have at least one purchase.
I have several complex queries (using subqueries, etc...) and want to glue them together with OR or AND statement.
I have a simple polymorphic association #comment.r开发者_JAVA百科b belongs_to :commentable, :polymorphic => true
I\'ll use the generic blog example. class Post < ActiveRecord::Base has_many :comments end class Comment < ActiveRecord::Base
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