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PORails 3 - has_many through with nested form
 

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  1. PORails 3 - has_many through with nested form
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    <p>I am trying to use a nested form but keep getting this error when saving -</p> <pre><code>uninitialized constant User::Userplan </code></pre> <p>Here is my model code -</p> <p>User</p> <pre><code>class User &lt; ActiveRecord::Base has_many :userplans has_many :plans, :through =&gt; :userplans accepts_nested_attributes_for :userplans </code></pre> <p>UserPlan</p> <pre><code>class UserPlan &lt; ActiveRecord::Base belongs_to :plan belongs_to :user </code></pre> <p>Plan</p> <pre><code>class Plan &lt; ActiveRecord::Base has_many :userplans has_many :users, :through =&gt; :userplans </code></pre> <p>Form</p> <pre><code>&lt;%= form_for(@user) do |f| %&gt; &lt;%= hidden_field_tag "user[userplans][plan_id]", 2 %&gt; &lt;%= f.text_field :first_name %&gt;&lt;/p&gt; </code></pre> <p>I know using a hidden_field_tag is wrong but im not sure of a better way</p> <p>Thanks for any help!</p> <p>activerecord (3.0.3) lib/active_record/associations/association_proxy.rb:260:in <code>raise_on_type_mismatch' activerecord (3.0.3) lib/active_record/associations/association_collection.rb:352:in</code>block in replace' activerecord (3.0.3) lib/active_record/associations/association_collection.rb:352:in <code>each' activerecord (3.0.3) lib/active_record/associations/association_collection.rb:352:in</code>replace' activerecord (3.0.3) lib/active_record/associations.rb:1524:in <code>block in collection_accessor_methods' activerecord (3.0.3) lib/active_record/base.rb:1559:in</code>block in attributes=' activerecord (3.0.3) lib/active_record/base.rb:1555:in <code>each' activerecord (3.0.3) lib/active_record/base.rb:1555:in</code>attributes=' cancan (1.4.1) lib/cancan/controller_resource.rb:72:in <code>build_resource' cancan (1.4.1) lib/cancan/controller_resource.rb:48:in</code>load_resource_instance' cancan (1.4.1) lib/cancan/controller_resource.rb:30:in <code>load_resource' cancan (1.4.1) lib/cancan/controller_resource.rb:24:in</code>load_and_authorize_resource' cancan (1.4.1) lib/cancan/controller_resource.rb:9:in <code>block in add_before_filter' activesupport (3.0.3) lib/active_support/callbacks.rb:436:in</code><em>run</em>_3988671192319902872__process_action_<em>982103756142273942</em>_callbacks' activesupport (3.0.3) lib/active_support/callbacks.rb:409:in <code>_run_process_action_callbacks' activesupport (3.0.3) lib/active_support/callbacks.rb:93:in</code>run_callbacks' actionpack (3.0.3) lib/abstract_controller/callbacks.rb:17:in <code>process_action' actionpack (3.0.3) lib/action_controller/metal/instrumentation.rb:30:in</code>block in process_action' activesupport (3.0.3) lib/active_support/notifications.rb:52:in <code>block in instrument' activesupport (3.0.3) lib/active_support/notifications/instrumenter.rb:21:in</code>instrument' activesupport (3.0.3) lib/active_support/notifications.rb:52:in <code>instrument' actionpack (3.0.3) lib/action_controller/metal/instrumentation.rb:29:in</code>process_action' actionpack (3.0.3) lib/action_controller/metal/rescue.rb:17:in <code>process_action' actionpack (3.0.3) lib/abstract_controller/base.rb:120:in</code>process' actionpack (3.0.3) lib/abstract_controller/rendering.rb:40:in <code>process' actionpack (3.0.3) lib/action_controller/metal.rb:138:in</code>dispatch' actionpack (3.0.3) lib/action_controller/metal/rack_delegation.rb:14:in <code>dispatch' actionpack (3.0.3) lib/action_controller/metal.rb:178:in</code>block in action' actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:62:in <code>call' actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:62:in</code>dispatch' actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:27:in <code>call' rack-mount (0.6.13) lib/rack/mount/route_set.rb:148:in</code>block in call' rack-mount (0.6.13) lib/rack/mount/code_generation.rb:93:in <code>block in recognize' rack-mount (0.6.13) lib/rack/mount/code_generation.rb:75:in</code>optimized_each' rack-mount (0.6.13) lib/rack/mount/code_generation.rb:92:in <code>recognize' rack-mount (0.6.13) lib/rack/mount/route_set.rb:139:in</code>call' actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:492:in <code>call' warden (1.0.2) lib/warden/manager.rb:35:in</code>block in call' warden (1.0.2) lib/warden/manager.rb:34:in <code>catch' warden (1.0.2) lib/warden/manager.rb:34:in</code>call' actionpack (3.0.3) lib/action_dispatch/middleware/best_standards_support.rb:17:in <code>call' actionpack (3.0.3) lib/action_dispatch/middleware/head.rb:14:in</code>call' rack (1.2.1) lib/rack/methodoverride.rb:24:in <code>call' actionpack (3.0.3) lib/action_dispatch/middleware/params_parser.rb:21:in</code>call' actionpack (3.0.3) lib/action_dispatch/middleware/flash.rb:182:in <code>call' actionpack (3.0.3) lib/action_dispatch/middleware/session/abstract_store.rb:149:in</code>call' actionpack (3.0.3) lib/action_dispatch/middleware/cookies.rb:295:in <code>call' activerecord (3.0.3) lib/active_record/query_cache.rb:32:in</code>block in call' activerecord (3.0.3) lib/active_record/connection_adapters/abstract/query_cache.rb:28:in <code>cache' activerecord (3.0.3) lib/active_record/query_cache.rb:12:in</code>cache' activerecord (3.0.3) lib/active_record/query_cache.rb:31:in <code>call' activerecord (3.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:353:in</code>call' actionpack (3.0.3) lib/action_dispatch/middleware/callbacks.rb:46:in <code>block in call' activesupport (3.0.3) lib/active_support/callbacks.rb:415:in</code>_run_call_callbacks' actionpack (3.0.3) lib/action_dispatch/middleware/callbacks.rb:44:in <code>call' rack (1.2.1) lib/rack/sendfile.rb:107:in</code>call' actionpack (3.0.3) lib/action_dispatch/middleware/remote_ip.rb:48:in <code>call' actionpack (3.0.3) lib/action_dispatch/middleware/show_exceptions.rb:46:in</code>call' railties (3.0.3) lib/rails/rack/logger.rb:13:in <code>call' rack (1.2.1) lib/rack/runtime.rb:17:in</code>call' activesupport (3.0.3) lib/active_support/cache/strategy/local_cache.rb:72:in <code>call' rack (1.2.1) lib/rack/lock.rb:11:in</code>block in call' :10:in <code>synchronize' rack (1.2.1) lib/rack/lock.rb:11:in</code>call' actionpack (3.0.3) lib/action_dispatch/middleware/static.rb:30:in <code>call' railties (3.0.3) lib/rails/application.rb:168:in</code>call' railties (3.0.3) lib/rails/application.rb:77:in <code>method_missing' railties (3.0.3) lib/rails/rack/log_tailer.rb:14:in</code>call' rack (1.2.1) lib/rack/content_length.rb:13:in <code>call' rack (1.2.1) lib/rack/handler/webrick.rb:52:in</code>service' /Users/joshcrowder/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/httpserver.rb:111:in <code>service' /Users/joshcrowder/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/httpserver.rb:70:in</code>run' /Users/joshcrowder/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'</p>
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