Where to permit a parameter in a has_one/belongs_to association? - ruby

Question

When I try and edit the Contact to add a DataType, I receive a: 'Unpermitted parameter: data_format' error. I have tried following similar associations I have found online, but can't figure out what I am missing. I apologize if this is redundant.
Here are the relevant pieces of information:
Models:
# == Schema Information
#
# Table name: contacts
#
# id :integer not null, primary key
# name :string
# email :string
# phone :string
# mobile :string
# created_at :datetime not null
# updated_at :datetime not null
# supplier_id :integer
#
class Contact < ActiveRecord::Base
has_one :data_type
accepts_nested_attributes_for :data_type, allow_destroy: true
end
# == Schema Information
#
# Table name: data_formats
#
# id :integer not null, primary key
# name :string
# created_at :datetime not null
# updated_at :datetime not null
# contact_id :integer
#
class DataFormat < ActiveRecord::Base
belongs_to :contact
end
Contact Controller:
class ContactsController < ApplicationController
before_action :set_contact, only: [:show, :edit, :update, :destroy]
def new
#contact = Contact.new
end
def create
#contact = Contact.new(contact_params)
respond_to do |format|
if #contact.save
format.html { redirect_to #contact, notice: 'Contact was successfully created.' }
format.json { render :show, status: :created, location: #contact }
else
format.html { render :new }
format.json { render json: #contact.errors, status: :unprocessable_entity }
end
end
end
private
def set_contact
#contact = Contact.find(params[:id])
end
def contact_params
params.require(:contact).permit(:name, :email, :phone, :mobile, :data_format,
data_format_attributes: [ :id, :name, :contact_id, :_destroy ] )
end
end
Edit View:
<%= simple_form_for #contact do |f| %>
<div class="form-group">
<div class="col-lg-6">
<%= f.input :name %>
</div>
<div class="col-lg-6">
<%= f.simple_fields_for :data_format do |t| %>
<%= t.input :id, label: 'Date Format:', :collection => DataFormat.order(:name) %>
<% end %>
</div>
<div class="col-lg-6">
<%= f.label "Submit", class: 'control-label' %>
<%= f.button :submit, class: 'btn btn-primary form-control' %>
</div>
</div>
<% end %>
The DataType(s) are appearing in the form and I can select them. So, I know the issue must be within the controller.
Any help would be greatly appreciated!

Answer 1

Your contact.rb is accepting nested attributes name and permitted parameters name mismatch. contact.rb mentions: accepts_nested_attributes_for :data_type, allow_destroy: true .
contact.rb
class Contact < ActiveRecord::Base
has_one :data_format
accepts_nested_attributes_for :data_format, allow_destroy: true
end
contacts_controller.rb
class ContactsController < ApplicationController
before_action :set_contact, only: [:show, :edit, :update, :destroy]
def new
#contact = Contact.new
#contact.data_format = DataFormat.new
end
...
private
def set_contact
#contact = Contact.find(params[:id])
end
def contact_params
params.require(:contact).permit(:name, :email, :phone, :mobile, :data_format,
data_format_attributes: [ :id, :name, :contact_id, :_destroy ] )
end
form
<%= simple_form_for #contact do |f| %>
<div class="form-group">
<div class="col-lg-6">
<%= f.input :name %>
</div>
<div class="col-lg-6">
<%= f.simple_fields_for :data_format, #contact.data_format do |t|%>
<%= t.input :id, label: 'Date Format:', :collection => DataFormat.order(:name) %>
<% end %>
</div>
<div class="col-lg-6">
<%= f.label "Submit", class: 'control-label' %>
<%= f.button :submit, class: 'btn btn-primary form-control' %>
</div>
</div>
<% end %>