Question

I currently have a user system set up with 2 models –> The Plans Model has_many Users.

What I would like to implement is a way to allow the users to upgrade/downgrade their plans. To do this, I’ve created a POST action in the controller called “update_plan”, and when the user POSTs a new Plan_id to it, than the user’s plan_id would change, and hence would be subscribed to a different plan.

When I POST to the Update-plan controller though the plan_id for the user does not change. I verified this by going to the console, and doing

user = User.find(1)
user.plan.id 

When checking the plan_id the second time, there was no change.

Here’s what my form looks like for changing the plan id

                       <%= form_tag("/users/update_plan", :method => "post" ) do %>

                        <%= hidden_field_tag :plan_id, plan.id %>

                        <%= submit_tag("Change To Plan", :class => "signup") %>


                      <% end %>

And here’s the Update Plan Action, in the Users Controller

  def update_plan
    @user = current_user
    if @user.update_attributes(params[:plan_id])
      flash[:success] = "Profile updated"
      sign_in @user
      redirect_to change_plan_path
    else
      render change_plan_path
      flash[:errors] = "Oops, something went wrong with the Update. Please Talk To Support"
    end
  end   

I am not quite sure where the error is though, because I’m not too sure in the core I’ve written above.

How would you update the parameters of the user’s plan_id? Any help greatly appreciated

Answer 1

@user.update_attributes(params[:plan_id]) won’t update the user in the way you’re expecting. update_attributes expects a hash which contains keys that match the model’s columns names.

To update a single column, try this:

@user = current_user
@user.plan_id = params[:plan_id]
@user.save

Another way, is to pass update_attributes a hash with plan_id (assuming plan_id can be mass assigned):

@user.update_attributes({:plan_id => params[:plan_id]})