fields_for not showing

[andrewjleonard]

Hey, absolutely loving Trestle!

I'm stuck with something that should work.. The following code does not show any nested fields.

class Customer < ApplicationRecord
  has_one :address, dependent: :destroy
  accepts_nested_attributes_for :address

  form do |customer|
    text_field :name
    text_field :email
    fields_for :address do
      text_field :number_and_street
      text_field :suburb
      text_field :state
      text_field :country
      text_field :post_code
    end
  end

I've had a look at #19 and still lost. Any help would be appreciated!

[spohlenz]

This happens when your Customer object doesn't yet have an associated Address.

To fix this, you can supply an extra argument to fields_for:

fields_for :address, customer.address || customer.build_address do

[andrewjleonard]

Thanks, that makes sense.

Now getting a TypeMismatch error.

ActiveRecord::AssociationTypeMismatch in CustomersAdmin::AdminController#create

Address(#70284209767180) expected, got {"number_and_street"=>"Test", "suburb"=>"Test",
 "state"=>"Test", "country"=>"Test", "post_code"=>"Test"} which is an instance of 
ActiveSupport::HashWithIndifferentAccess(#70284156005000)

[spohlenz]

As long as you have the accepts_nested_attributes_for :address line in your Customer model, then Rails should be automatically converting the input field names to customer[address_attributes][field]. It sounds like the input names are coming through as customer[address][field] which will cause that error.

I would double-check that the accepts_nested_attributes_for line is in place and that there are no typos in the association name. You might also want to try restarting the Rails server in case there is a code reloading issue at play.