Error in Form when saving to 2 Tables in Ruby Rails

Question

I saw a similar answered question here which got me this far. But now I am facing an error in Form. The solution I am looking for is basically saving to two tables in Ruby Rails where saving the Property with address in first table also saves 2 images in Pictures' second table.

Migration1:

class CreateProperties < ActiveRecord::Migration[5.0]
  def change
    create_table :properties do |t|
      t.string :address

      t.timestamps
    end
  end
end

Migration2:

class CreatePictures < ActiveRecord::Migration[5.0]
  def change
    create_table :pictures do |t|
      t.string :image1
      t.string :image2

      t.timestamps
    end
  end
end

Property Model:

class Property < ApplicationRecord
    has_many :pictures
    accepts_nested_attributes_for :pictures
end

Picture Model:

class Picture < ApplicationRecord
    belongs_to :property
end

PropertiesController:

class PropertiesController < ApplicationController
before_action :set_property

  def new
    @property = Property.new
  end

  def create
    @property = properties.build(property_params)
    if @property.save
      flash[:success] = "Property was successfully created"
      redirect_to property_path(@property)
    else
      render 'new'
    end
  end

  private
    def property_params
      params.require(:property).permit(:address, picture_attributes: [:image1, :image2])
    end
end

The FORM which I don't know is done as below:

<%= form_for(@property) do |f| %>
<%= f.label :address %>
<%= f.text_field :address %>

<%= f.label :image1 %>
<%= f.text_field :image1 %>

<%= f.label :image2 %>
<%= f.text_field :image2 %>
<%= f.submit %>
<% end %>

Error Picture:

Error on new.html.erb

Sometimes, a form object is a good alternative to complicated nested forms that model complicated nested relationships. Just search "ruby on rails form object" for more info... — Brad Werth
– Brad Werth, Commented Apr 5, 2017 at 23:08

amrrbakry · Accepted Answer · 2017-04-05 23:06:19Z

2

You should use the fields_for method to have a form for pictures inside the property form:

# inside the property form_for
<%= f.fields_for @property.pictures.build do |p| %>
  <%= p.file_field :image1 %>
  <%= p.file_field :image2 %> 
<% end %>

answered Apr 5, 2017 at 23:06

amrrbakry

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14 Comments

TheMissingNTLDR Over a year ago

Thanks Amr! will certainly try this out tomorrow and will report back.!

amrrbakry Over a year ago

One last thing, in your property_params it's pictures_attributes not picture_attributes. Hope this helps!

TheMissingNTLDR Over a year ago

yes, i was playing around with that in singular/plural but will stick to plural now!

TheMissingNTLDR Over a year ago

ok..i tried this in form:

<%= form_for(@property) do |f| %> 	<%= f.label :address %> 	<%= f.text_field :address %>  		<%= f.fields_for @property.pictures.build do |p| %> 		  <%= p.file_field :image1 %> 		  <%= p.file_field :image2 %>  		<% end %>    	<%= f.submit %> <% end %>

but it is giving me error >> unknown attribute 'property_id' for Picture (around line #5)

amrrbakry Over a year ago

Rails expects a foreign key field property_id in your pictures table for the association to work. Create a migration and add this field and it should work.

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