title: Uninitialized constant error constant Skill:Description
body: <p>I am trying to make a form and submit a skill and description into a database.  I am almost done however I am getting this error after submitting my info:</p>
  
  <pre><code>NameError in SkillsController#create
  uninitialized constant Skill::Description
  </code></pre>
  
  <p>and it points to this action in my controller:</p>
  
  <pre><code>def create
    @skills = Skill.new(skill_params)
    if @skills.save
      redirect_to :action =&gt; 'index'
    else
      @skills = Skill.find(:all)
      render :action =&gt; 'new'
    end
  end
  </code></pre>
  
  <p>I have a private method at the bottom defining params which states:</p>
  
  <pre><code>private
  
    def skill_params
    params.require(:skill).permit(:description)
    end
  </code></pre>
  
  <p>This is the fullstack trace:</p>
  
  <pre><code>   activerecord (4.1.2.rc1) lib/active_record/inheritance.rb:133:in `compute_type'
      activerecord (4.1.2.rc1) lib/active_record/reflection.rb:221:in `klass'
      activerecord (4.1.2.rc1) lib/active_record/associations/association.rb:214:in `raise_on_type_mismatch!'
      activerecord (4.1.2.rc1) lib/active_record/associations/collection_association.rb:356:in `block in replace'
      activerecord (4.1.2.rc1) lib/active_record/associations/collection_association.rb:356:in `each_char'
      activerecord (4.1.2.rc1) lib/active_record/associations/collection_association.rb:356:in `replace'
      activerecord (4.1.2.rc1) lib/active_record/associations/collection_association.rb:41:in `writer'
      activerecord (4.1.2.rc1) lib/active_record/associations/builder/association.rb:118:in `description='
      activerecord (4.1.2.rc1) lib/active_record/attribute_assignment.rb:45:in `public_send'
      activerecord (4.1.2.rc1) lib/active_record/attribute_assignment.rb:45:in `_assign_attribute'
      activerecord (4.1.2.rc1) lib/active_record/attribute_assignment.rb:32:in `block in assign_attributes'
      activerecord (4.1.2.rc1) lib/active_record/attribute_assignment.rb:26:in `each'
      activerecord (4.1.2.rc1) lib/active_record/attribute_assignment.rb:26:in `assign_attributes'
      activerecord (4.1.2.rc1) lib/active_record/core.rb:455:in `init_attributes'
      activerecord (4.1.2.rc1) lib/active_record/core.rb:198:in `initialize'
      activerecord (4.1.2.rc1) lib/active_record/inheritance.rb:30:in `new'
      activerecord (4.1.2.rc1) lib/active_record/inheritance.rb:30:in `new'
      app/controllers/skills_controller.rb:29:in `create'
      actionpack (4.1.2.rc1) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
      actionpack (4.1.2.rc1) lib/abstract_controller/base.rb:189:in `process_action'
      actionpack (4.1.2.rc1) lib/action_controller/metal/rendering.rb:10:in `process_action'
      actionpack (4.1.2.rc1) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:113:in `call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:113:in `call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:229:in `block in halting'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:229:in `call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:229:in `block in halting'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:166:in `call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:166:in `block in halting'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:166:in `call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:166:in `block in halting'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:166:in `call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:166:in `block in halting'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:86:in `call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:86:in `run_callbacks'
      actionpack (4.1.2.rc1) lib/abstract_controller/callbacks.rb:19:in `process_action'
      actionpack (4.1.2.rc1) lib/action_controller/metal/rescue.rb:29:in `process_action'
      actionpack (4.1.2.rc1) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
      activesupport (4.1.2.rc1) lib/active_support/notifications.rb:159:in `block in instrument'
      activesupport (4.1.2.rc1) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
      activesupport (4.1.2.rc1) lib/active_support/notifications.rb:159:in `instrument'
      actionpack (4.1.2.rc1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
      actionpack (4.1.2.rc1) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
      activerecord (4.1.2.rc1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
      actionpack (4.1.2.rc1) lib/abstract_controller/base.rb:136:in `process'
      actionview (4.1.2.rc1) lib/action_view/rendering.rb:30:in `process'
      actionpack (4.1.2.rc1) lib/action_controller/metal.rb:196:in `dispatch'
      actionpack (4.1.2.rc1) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
      actionpack (4.1.2.rc1) lib/action_controller/metal.rb:232:in `block in action'
      actionpack (4.1.2.rc1) lib/action_dispatch/routing/route_set.rb:82:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/routing/route_set.rb:82:in `dispatch'
      actionpack (4.1.2.rc1) lib/action_dispatch/routing/route_set.rb:50:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/journey/router.rb:71:in `block in call'
      actionpack (4.1.2.rc1) lib/action_dispatch/journey/router.rb:59:in `each'
      actionpack (4.1.2.rc1) lib/action_dispatch/journey/router.rb:59:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/routing/route_set.rb:678:in `call'
      warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
      warden (1.2.3) lib/warden/manager.rb:34:in `catch'
      warden (1.2.3) lib/warden/manager.rb:34:in `call'
      rack (1.5.2) lib/rack/etag.rb:23:in `call'
      rack (1.5.2) lib/rack/conditionalget.rb:35:in `call'
      rack (1.5.2) lib/rack/head.rb:11:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/flash.rb:254:in `call'
      rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
      rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/cookies.rb:560:in `call'
      activerecord (4.1.2.rc1) lib/active_record/query_cache.rb:36:in `call'
      activerecord (4.1.2.rc1) lib/active_record/connection_adapters/abstract/connection_pool.rb:621:in `call'
      activerecord (4.1.2.rc1) lib/active_record/migration.rb:380:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
      activesupport (4.1.2.rc1) lib/active_support/callbacks.rb:82:in `run_callbacks'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/reloader.rb:73:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
      railties (4.1.2.rc1) lib/rails/rack/logger.rb:38:in `call_app'
      railties (4.1.2.rc1) lib/rails/rack/logger.rb:20:in `block in call'
      activesupport (4.1.2.rc1) lib/active_support/tagged_logging.rb:68:in `block in tagged'
      activesupport (4.1.2.rc1) lib/active_support/tagged_logging.rb:26:in `tagged'
      activesupport (4.1.2.rc1) lib/active_support/tagged_logging.rb:68:in `tagged'
      railties (4.1.2.rc1) lib/rails/rack/logger.rb:20:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
      rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
      rack (1.5.2) lib/rack/runtime.rb:17:in `call'
      activesupport (4.1.2.rc1) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call'
      rack (1.5.2) lib/rack/lock.rb:17:in `call'
      actionpack (4.1.2.rc1) lib/action_dispatch/middleware/static.rb:64:in `call'
      rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
      railties (4.1.2.rc1) lib/rails/engine.rb:514:in `call'
  
  railties (4.1.2.rc1) lib/rails/application.rb:144:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  rack (1.5.2) lib/rack/content_length.rb:14:in `call'
  rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
  C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
  C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
  C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'
  </code></pre>
  
  <p>and this is my schema:</p>
  
  <pre><code>  create_table "skills", force: true do |t|
      t.datetime "created_at"
      t.string   "description"
    end
  </code></pre>
  
  <p>This is my skills/new.html.erb form:</p>
  
  <pre><code>&lt;h1&gt;Add new Skill&lt;/h1&gt;
  &lt;%= form_tag ({action: "create"}) do %&gt;
  &lt;p&gt;&lt;label for="skill"&gt;Skill&lt;/label&gt;:
  &lt;%= text_field 'skill', 'title' %&gt;&lt;/p&gt;
  
  &lt;p&gt;&lt;label for="skill_description"&gt;Description&lt;/label&gt;&lt;br/&gt;
  &lt;%= text_area 'skill', 'description' %&gt;&lt;/p&gt;
  &lt;%= submit_tag "Create" %&gt;
  &lt;% end  %&gt;
  &lt;%= link_to 'Back', {:action =&gt; 'index'} %&gt;
  </code></pre>
  
  <p>I hope I have provided enough info to solve the issue and thank you anyone who knows what to do to initialize description.  Thanks again and cheers!</p>
  
  <p>index.html.erb:</p>
  
  <pre><code>&lt;% if @skills.blank? %&gt;
    &lt;p&gt;There are not any skills currently saved in the system.&lt;/p&gt;
  &lt;% else %&gt;
    &lt;p&gt;These are the current skills saved in our system&lt;/p&gt;
    &lt;ul id="skills"&gt;
      &lt;% @skills.each do |c| %&gt;
        &lt;li&gt;&lt;%= link_to c.title, {:action =&gt; 'show', :id =&gt; c.id} -%&gt;&lt;/li&gt;
        &lt;li&gt;
         &lt;%= link_to c.title, {:action =&gt; 'show', :id =&gt; c.id} -%&gt;
         &lt;b&gt; &lt;%= link_to 'Edit', {:action =&gt; 'edit', :id =&gt; c.id} %&gt;&lt;/b&gt;
         &lt;b&gt; &lt;%= link_to "Delete", {:action =&gt; 'delete', :id =&gt; c.id},
          :confirm =&gt; "Are you sure you want to delete this skill??" %&gt;&lt;/b&gt;
        &lt;/li&gt;
      &lt;% end %&gt;
    &lt;/ul&gt;
    &lt;p&gt;&lt;%= link_to "Add new Skill", {:action =&gt; 'new' }%&gt;&lt;/p&gt;
  &lt;% end %&gt;
  </code></pre>
  
  <p>I do not have a title param available and it is causing problems.</p>
  
  <p>skill.rb:</p>
  
  <pre><code> class Skill &lt; ActiveRecord::Base
      has_many :skill
  
      has_many :description
  end
  </code></pre>
  
  <p>hope this new info helps! Thanks again for taking a look with me.</p>