[FIXED] How to display items of linked model

Issue

I have 2 models ("Offence" and "OffenceType") with a has_many relationship managed by a join table "lk_offence_types".

In the index.html.erb of "Offence" I'm not able to display an OffenceType item. (I've tried with delegation but it seems not work with has_many..)

Offence model:

class Offence < ApplicationRecord
    has_many :lk_offence_types, inverse_of: :offence, dependent: :destroy
    has_many :offence_types, through: :lk_offence_types

    #delegate :offence_type_description, to: :offence_type
end

OffenceType model:

class OffenceType < ApplicationRecord
    has_many :lk_offence_types
    has_many :offences, through: :lk_offence_types
end

LkOffenceType model:

class LkOffenceType < ApplicationRecord
  belongs_to :offence_type, inverse_of: :lk_offence_types
  belongs_to :offence, inverse_of: :lk_offence_types  
end

Offence's index.html.erb:

<% @offences.each do |offence| %>
<tr>
<td><%= offence.offence_description %></td>
<td><%= offence.offence_types.offence_type_description %></td>
<% end %>

<%= offence.offence_types.offence_type_description %> gives me an error. I've also tried with: <%= offence.offence_type_description %> and other siyntaxes...

What am I missing?

(I'm using Ruby 2.3 and Rails 5.0.2)

Thanks

Solution

You need to loop over offence types as well. You may need to fix the styling, this is just to give you the idea of what's missing.

<% offence.offence_types.each do |ot| %>
 <td><%= ot.offence_type_description %></td>
<% end %>

Answered By - Eyeslandic

Answer Checked By - Terry (PHPFixing Volunteer)