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POUser has many roles through assignments
 

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  1. POUser has many roles through assignments
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    <p>I want to be able to assign multiple roles to every user and get them back with something like User.first.roles, but I'm lost, how would you do it using rails console? What am I doing wrong in my models? </p> <pre><code>u = User.first User Load (0.1ms) SELECT "users".* FROM "users" LIMIT 1 =&gt; #&lt;User id: 18 [...]&gt; 1.9.3-p194 :004 &gt; u.roles NameError: uninitialized constant User::Assignment from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/inheritance.rb:119:in `compute_type' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/reflection.rb:172:in `klass' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/reflection.rb:385:in `block in source_reflection' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/reflection.rb:385:in `collect' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/reflection.rb:385:in `source_reflection' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/reflection.rb:508:in `check_validity!' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/associations/association.rb:26:in `initialize' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/associations/collection_association.rb:24:in `initialize' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/associations/has_many_through_association.rb:10:in `initialize' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/associations.rb:157:in `new' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/associations.rb:157:in `association' from [path]/ruby-1.9.3-p194/gems/activerecord-3.2.3/lib/active_record/associations/builder/association.rb:44:in `block in define_readers' from (irb):4 from [path]/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands/console.rb:47:in `start' from [path]/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands/console.rb:8:in `start' from [path]/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands.rb:41:in `&lt;top (required)&gt;' from script/rails:6:in `require' from script/rails:6:in `&lt;main&gt;' </code></pre> <p>models/user.rb</p> <pre><code>class User &lt; ActiveRecord::Base attr_accessible :name, :email, :password, :password_confirmation, :role_id has_many :assignments has_many :roles, through: :assignments #more code... end </code></pre> <p>models/role.rb</p> <pre><code>class Role &lt; ActiveRecord::Base attr_accessible :name has_many :assignments has_many :users, through: :assignments end </code></pre> <p>models/assignments.rb</p> <pre><code>class Assignments &lt; ActiveRecord::Base attr_accessible :role_id, :user_id belongs_to :user belongs_to :role end </code></pre> <p>schema.rb: <a href="http://cl.ly/323n1t0Q1t390y1M2S0E" rel="nofollow">http://cl.ly/323n1t0Q1t390y1M2S0E</a></p>
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      1. POUser has many roles through assignments
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    1. This table or related slice is empty.
 

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