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POSaving and redirecting with a model and revision model in Rails
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  1. POSaving and redirecting with a model and revision model in Rails
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    copied!<p>I'm relatively new to RoR, and have been working on a lesson-site sharing back-end.</p> <p>Currently I have two models: Lesson and Revision. The idea is that a teacher would create a lesson (with a title, description, etc.), at the lesson/new page. The form would redirect to another form with other fields (content, comments) at the lesson/lesson_id/revision/new page. Eventually teachers will be able to "save and modify" lessons by copying revisions to their own profile, but the model isn't there yet.</p> <p>I'm still focusing on two supposedly basic issues, both in creating new lessons and revisions.</p> <p>1) Saving the lessons to a user, and revisions to a user and lesson. At one point I had revisions saved to users, but lessons were not saving.</p> <p>2) Redirecting from the lesson form to the revision form, and the revision form to the revision page. I've tried changing the redirects in the controller and one of the form_for blocks, to no avail. The new lesson form still wants to go to /lessons rather than /lesson/1/revision/new, which I've tried to redirect to with new_lesson_revision_path. The revision form also just goes back to /revisions, which will be an admin index but I'd rather go to /lesson/1/revision/1 etc.</p> <p>Thanks in advance for any advice on either or both of these issues!</p> <p>Below is my code for reference. An excerpt from routes.rb:</p> <pre><code>resources :lessons resources :revisions #For index pages for admin resources :lessons do resources :revisions end </code></pre> <p>Models</p> <pre><code>class Lesson &lt; ActiveRecord::Base attr_accessible :stable, :summary, :title, :time_created has_many :revisions, :class_name =&gt; "Revision" has_many :users, :through =&gt; :revisions end class Revision &lt; ActiveRecord::Base attr_accessible :comment, :lesson_id, :user_id, :description, :content, :time_updated belongs_to :lesson, :class_name =&gt; "Lesson", :foreign_key =&gt; "lesson_id" belongs_to :user, :class_name =&gt; "User", :foreign_key =&gt; "user_id" accepts_nested_attributes_for :lesson end </code></pre> <p>Lessons new.html.erb</p> <pre><code>&lt;% if user_signed_in? %&gt; &lt;h2&gt;New lesson&lt;/h2&gt; &lt;%= form_for @lesson do |f| %&gt; &lt;%= render "form" %&gt; &lt;% end %&gt; &lt;%= link_to 'Back', lessons_path %&gt; &lt;% else %&gt; &lt;h3&gt; Please &lt;%= link_to 'sign in', new_user_session_path %&gt; or &lt;%= link_to 'create an account', new_user_registration_path %&gt; to make and save lessons.&lt;/h3&gt; &lt;% end %&gt; </code></pre> <p>Lessons _form.html.erb</p> <pre><code>&lt;%= form_for @lesson, :url =&gt; new_lesson_revision_path(@lesson_id, @revision) do |f| %&gt; &lt;div class="field"&gt; &lt;%= f.label :title %&gt;&lt;br /&gt; &lt;%= f.text_field :title %&gt; &lt;/div&gt; &lt;div class="field"&gt; &lt;%= f.label :summary %&gt;&lt;br /&gt; &lt;%= f.text_area :summary %&gt; &lt;/div&gt; &lt;div class="field"&gt; &lt;%= f.label :stable %&gt;&lt;br /&gt; &lt;%= f.check_box :stable %&gt; &lt;/div&gt; &lt;div class="actions"&gt; &lt;%= f.submit %&gt; &lt;/div&gt; &lt;% end %&gt; </code></pre> <p>Revisions new.html.erb</p> <pre><code>&lt;% if user_signed_in? %&gt; &lt;h2&gt;New revision&lt;/h2&gt; &lt;%= form_for @revision do |f| %&gt; &lt;%= render "form" %&gt; &lt;% end %&gt; &lt;%= link_to 'Back', lessons_path %&gt; &lt;% else %&gt; &lt;h3&gt; Please &lt;%= link_to 'sign in', new_user_session_path %&gt; or &lt;%= link_to 'create an account', new_user_registration_path %&gt; to make and save revisions.&lt;/h3&gt; &lt;% end %&gt; </code></pre> <p>Revisions _form.html.erb</p> <pre><code>&lt;%= form_for(@revision) do |f| %&gt; &lt;div class="field"&gt; &lt;%= f.label :description %&gt;&lt;br /&gt; &lt;%= f.text_field :description %&gt; &lt;/div&gt; &lt;div class="field"&gt; &lt;%= f.label :content %&gt;&lt;br /&gt; &lt;%= f.text_area :content %&gt; &lt;/div&gt; &lt;div class="field"&gt; &lt;%= f.label :comment %&gt;&lt;br /&gt; &lt;%= f.text_area :comment %&gt; &lt;/div&gt; &lt;div class="actions"&gt; &lt;%= f.submit %&gt; &lt;/div&gt; &lt;% end %&gt; </code></pre> <p>Lesson Controller: new/create</p> <pre><code> def new @lesson = Lesson.new end def create @user = current_user @lesson = Lesson.new(params[:lesson]) #@user.lessons &lt;&lt; @lesson params[:lesson][:user_id] = current_user.id params[:lesson][:lesson_id] = @lesson.id respond_to do |format| if @lesson.save format.html { redirect_to new_lesson_revision_path(params[:lesson_id]), notice: 'Your lesson was successfully created.' } format.json { render json: @lesson, status: :created, location: new_lesson_revision_path} else format.html { render action: "new" } format.json { render json: @lesson.errors, status: :unprocessable_entity } end end end </code></pre> <p>Revisions Controller: new/create</p> <pre><code> def new @revision = Revision.new end def create @lesson = Lesson.find(params[:lesson_id]) @revision = @lesson.revisions.new(params[:revision]) @revision.user_id = current_user.id @revision.lesson_id = @lesson.id @revision.time_updated = DateTime.now respond_to do |format| if @revision.save format.html { redirect_to current_user.profile } format.json { } else render :new end end end </code></pre> <p>Lastly here are most of the results from my rake routes:</p> <pre><code> home_index GET /home/index(.:format) home#index profile POST /profile(.:format) profiles#create new_profile GET /profile/new(.:format) profiles#new edit_profile GET /profile/edit(.:format) profiles#edit GET /profile(.:format) profiles#show PUT /profile(.:format) profiles#update DELETE /profile(.:format) profiles#destroy lessons GET /lessons(.:format) lessons#index POST /lessons(.:format) lessons#create new_lesson GET /lessons/new(.:format) lessons#new edit_lesson GET /lessons/:id/edit(.:format) lessons#edit lesson GET /lessons/:id(.:format) lessons#show PUT /lessons/:id(.:format) lessons#update DELETE /lessons/:id(.:format) lessons#destroy lesson_revisions GET /lessons/:lesson_id/revisions(.:format) revisions#index POST /lessons/:lesson_id/revisions(.:format) revisions#create new_lesson_revision GET /lessons/:lesson_id/revisions/new(.:format) revisions#new edit_lesson_revision GET /lessons/:lesson_id/revisions/:id/edit(.:format) revisions#edit lesson_revision GET /lessons/:lesson_id/revisions/:id(.:format) revisions#show PUT /lessons/:lesson_id/revisions/:id(.:format) revisions#update DELETE /lessons/:lesson_id/revisions/:id(.:format) revisions#destroy GET /lessons(.:format) lessons#index POST /lessons(.:format) lessons#create GET /lessons/new(.:format) lessons#new GET /lessons/:id/edit(.:format) lessons#edit GET /lessons/:id(.:format) lessons#show PUT /lessons/:id(.:format) lessons#update DELETE /lessons/:id(.:format) lessons#destroy root / home#index /profile(.:format) profiles#show </code></pre>
 

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