Question

I have a table Cases with the has_many association to users. I’m trying to display all the cases related to a user by rendering it in user show page. I’m unable to render the case in here. Any help would be appreciated.

My code for user show page :

 <table >
  <tr>
    <td >
      <h1>
        Welcome <%= current_user.first_name %>  you are <%= current_user.role %>    
      </h1>
    </td>
    </tr>
    <tr>
      <td>
        <% render @cases %>
      </td>
    </tr>
    </table>

Show controller in users:

     def show
    @user = User.find(params[:id])
    @cases = @user.cases
    @title = @user.first_name
    end

I have a file _case.html.erb in views/cases.

Answer 1

The problem is that case is a reserved word in Ruby, and when do render @cases, it is trying to create a local variable called case in the partial, which is not allowed. You have to call the local variable something else. The docs here explain how with this example:

# Renders a collection of partials but with a custom local variable name
render :partial => "admin_person", :collection => @winners, :as => :person

In your case that would be:

render :partial => 'case', :collection => @cases, :as => :current_case

And then in the case partial, just use the variable current_case where you would have otherwise used the variable case.