has-many

How can I limit the number of rows returned in a has many relationship? For example: class User < ActiveRecord::Base has_many :photos end I want to be able to do: User.includes(:photos => {:limit => 8}).all This obviously doesnt work, but something with this functionality. Do I need to write out the SQL myself? Thanks in advance! EDIT: I dont want to limit the association, just the query results. So a User might have a thousand photos, I only want the top 3 returned. ronnieonrails Just add a limit option to the has_many association: class User < ActiveRecord::Base has_many :photos, :limit => 8

I found this code on http://guides.rubyonrails.org/association_basics.html#the-has_one-through-association : class Document < ActiveRecord::Base has_many :sections has_many :paragraphs, :through => :sections end class Section < ActiveRecord::Base belongs_to :document has_many :paragraphs end class Paragraph < ActiveRecord::Base belongs_to :section end This is exactly what I'm trying to accomplish, but I'm still very new to Rails and was wondering if someone could show me a sample of the forms and the controllers needed in order to be able to create records for this setup? I was able to create

I have a event model. Events can have parent events, set from a column in the model (parent_event_id). I need to be able to do has_many :event on the model, so I can just do, for example, event.child_event or event.parent_event . But my googling hasn't worked out that well. My Model: class Event < ActiveRecord::Base attr_accessible :days_before, :event_name, :event_date, :list_id, :recipient_email, :recipient_name, :parent_event_id, :is_deleted, :user_id belongs_to :user has_many :event_email has_many :event end My Schema: create_table "events", :force => true do |t| t.datetime "event_date" t

In my User model I could have: has_many :tasks and in my Task model: belongs_to :user Then, supposing the foreign key 'user_id' was stored in the tasks table, I could use: @user.tasks My question is, how do I declare the has_many relationship such that I can refer to a User's Tasks as: @user.jobs ... or ... @user.foobars Thanks a heap. Sam Saffron Give this a shot: has_many :jobs, foreign_key: "user_id", class_name: "Task" Note, that :as is used for polymorphic associations . You could also use alias_attribute if you still want to be able to refer to them as tasks as well: class User <

I have 3 tables - users, things, and follows. Users can follow things through the follows table, associating a user_id with a things_id . This would mean: class User has_many :things, :through => :follows end class Thing has_many :users, :through => :follows end class Follow belongs_to :users belongs_to :things end So I can retrieve thing.users with no problem. My issue is if in the follows table, I have a column named "relation", so I can set a follower as an "admin", I want to have access to that relation. So in a loop I can do something like: <% things.users.each do |user| %> <%= user