Ruby on rails How do I display data associated with a specific row

Question

In my ruby on rails application I have a show.html.erb page that displays the details of a film, what I want to do is display the dates that film is being shown. In the show.html.erb file I have done this so far:

<% @film.showings.each do |film| %>
    <%= @film.showings.show_date %>         
<% end %>

And in my models I have the associations:

film.rb:

class Film < ActiveRecord::Base
    has_many :showings
    validates :title, presence: true,  length: { minimum: 3 }
end

showing.rb:

class Showing < ActiveRecord::Base
  belongs_to :film
end

In my showings_controller.rb:

class ShowingsController < ApplicationController

    def show
        @showing = Showing.find(params[:id])
    end

end

What am I doing wrong? At the minute I get the error:

NoMethodError in Films#show undefined method show_date for #

What should I be doing?

Doing that displays the error: undefined method `showings' for #<Showing:0x5b596c0> — user4227507
– user4227507, Commented Jan 21, 2015 at 16:19

mhutter · Accepted Answer · 2015-01-21 16:23:43Z

1

I don't know if that's the problem, but the code in show.html.erb is wrong. You are looping over @film's showing, but INSIDE the loop you're stil referring to ALL the showings (@film.showings). Inside, try this:

<% @film.showings.each do |showing| %>
    <%= showing.show_date %>         
<% end %>

answered Jan 21, 2015 at 16:23

mhutter

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