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PORails: Auto-fill reference on nested resource
 

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  1. PORails: Auto-fill reference on nested resource
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    <p>I have a resource "Project" nested inside a resource "Group". On my show group page, I list all the projects the group has. I also have added a "New Project" link leading to </p> <pre><code>new_group_project_path(@group) </code></pre> <p>But in the following new project form, the user still needs to enter the id of the group, even though he just clicked the New Project link on a specific group's page. I tried doing</p> <pre><code>&lt;%= f.text_field :group_id, :value =&gt; @group.id %&gt; </code></pre> <p>But @group seems to be nil, even though I passed it in the link.</p> <p>How can I auto-fill this field with the group_id, or even hide the whole thing from the user, since it's already predetermined and he shouldn't have to think about that?</p> <p>Thanks,</p> <p>MrB</p> <p>[edit]</p> <p>Here's more of my code to clarify:</p> <pre><code> 1 class ProjectController &lt; ApplicationController 2 def new 3 @group = Group.find(params[:group_id]) 4 @project = @group.projects.build 5 respond_with(@project) 6 end 7 8 def create 9 @group = Group.find(params[:group_id]) 10 @project = @group.projects.build(params[:projects]) 11 end 12 end </code></pre> <p>And in the _form.html.erb</p> <pre><code> 26 &lt;% if @group.nil? %&gt; 25 &lt;div class="field"&gt; 26 &lt;%= f.label :group_id %&gt;&lt;br /&gt; 27 &lt;%= f.text_field :group_id %&gt; 28 &lt;/div&gt; 29 &lt;% end %&gt; </code></pre> <p>Routes.rb:</p> <pre><code> 5 resources :groups do 4 resources :projects 5 end 6 7 resources :projects </code></pre> <p>Hope this helps. Thank you.</p>
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