CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
yerassyl
yerassyl

Reputation: 3057

How to redirect to parent model after edit of child in Rails 4

I have Request model. I have two types of requests, parent and child. One parent Request can have many child Requests but child can have only one parent.

Suppose I am editing some child Request. After update I want to redirect to its parent Request. Here is my code:

 def update
    respond_to do |format|
      if @request.update(request_params)
        format.html { redirect_to request_path(params[:parent_request_id]) , notice: 'Request was successfully updated.' }
        format.json { render :show, status: :ok, location: @request }
      else
        format.html { render :edit }
        format.json { render json: @request.errors, status: :unprocessable_entity }
      end
    end
  end

so i redirect to request_path(params[:parent_request_id]). where parent_request_id is defined in hidden_field inside form, and passed through url. Inspecting in browser showed me my hidden field in form with a value set:

<input type="hidden" value="1" name="request[parent_request_id]" id="request_parent_request_id">

But I got error:

No route matches {:action=>"show", :controller=>"requests", :id=>nil} missing required keys: [:id]

Upvotes: 0

Views: 487

Answers (1)

Hristo Georgiev
Hristo Georgiev

Reputation: 2519

You are doing it almost right.

Check the params being sent on the terminal when you submit the form. You will see that all parameters sent to the update action, including [:parent_request_id], are wrapped in [:request] .

In order to reach that param, you need to put this:

 params[:request][:parent_request_id]

Also, look at the error - it tells you that the value is nil there, which means that nothing went through. This means that a) You forgot to permit that parameter b) You mispelled it/didn't write the correct value.

Upvotes: 3

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