CODEWITHSUNDEEP
ruby-on-rails
Tobi
Tobi

Reputation: 27

access attributes using has_many relationship

I have a controller which looks something like this:

class EventController < ApplicationController
  def index
    ...
    @events = Event.where(['eventdate < ?', DateTime.now]).order("eventdate")
    ...
  end
end

And my model defines the following relationship:

class Event < ActiveRecord::Base
  ...  
  has_many :match_items, dependent: :destroy
  ...
end

I am now trying to access the event_items linked to the events defined in the the instance variable @event in my view as follows:

<h2>Your Events</h2>
<% @events.each do |event| %>​
  </br>​<span>​
    <%= event.eventdate.to_formatted_s(:rfc822) %> 
    <%= event.event_items.event_comment %>
​  </span>
<% end %>

the event.event_items.event_comment line throws an error: undefined method 'event_comment' for []:ActiveRecord::Relation

Why can't I not access event_comment as a method?

If I just use event.event_items the line doesn't display an error and shows the whole event_items array with all it's content displayed in my view.

So i thought maybe I can just access the event_commentas part of the array through using:

<%= event.event_items.event_comment[i] %> #where i is the index of event_comment in the array

But this then doesn't return anything in my display.

Any suggestions on how I can access the attribute event_comment stored in my event_items db table? Any help is very much appreciated!

Upvotes: 0

Views: 77

Answers (1)

vee
vee

Reputation: 38645

The reason you are getting that error is because event.event_items returns a ActiveRecord::Relation and not an instance of EventComment. Try using:

event.event_items.first.event_comment

Upvotes: 1

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