CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3paperclip
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Reputation: 527

Rails - paperclip - multiple image creation no-method error

I'm new to Ruby on Rails and I have been trying to create a sample apple but I've been stuck on this one part for WEEKS ! I have been spamming stackoverflow but I've had no luck :(. I'm trying to create a products page that also allows for multiple image upload. So I have a user model a product model and a photo model. When i submit the form filled with photos and other inputs I get this error.

NoMethodError in ProductsController#create

undefined method `photo' for #<Product:0x9078f74>

new product page

= form_for @product, :html => {:multipart => true} do |f|
  %p
    = f.label :description
    = f.text_field :description

  = fields_for @photo, :html => {:multipart => true} do |fp|
    = fp.file_field :image 

  %p.button
    = f.submit

products controller

  def new
    @product = Product.new
    @photo   = Photo.new
  end

  def create
    @photo = current_user.photos.build(params[:photo])  
    @product = current_user.products.build(params[:product])
  end

product model

attr_accessible :description, :name, :photo, :image

  belongs_to :user
  has_many :photos, dependent: :destroy
  accepts_nested_attributes_for :photos

  validates :user_id,      presence: true
  validates :description,  presence: true
  validates :photo,        presence: true
end

photo model

  attr_accessible :image
  belongs_to :product
  validates_attachment :image, presence: true

user model

attr_accessible :email, :name, :password, :password_confirmation, :image, :photo

  has_many :products, dependent: :destroy
  has_many :photos, :through => :products

end

tables

User

product

photo

Upvotes: 1

Views: 524

Answers (3)

Alain Goldman
Alain Goldman

Reputation: 2908

In your products model


has_many :photos
accepts_nested_attributes_for :photos
attr_accessible :description, :name, :photos_attributes

Upvotes: 1

logesh
logesh

Reputation: 2672

Change the Products controller to

def new
  @product = Product.new
  @product.photos.build
end

def create  
  @product = Product.new(params[:product])
end

Since you have asked for multiple image upload try adding this to your view

   <%= f.fields_for :photos do |img| %>
        <%= render "img_fields", :f => img %>
   <% end %>
   <div class="add_image"><%= link_to_add_fields "Add Image", f, :photos %></div>

and create a file _img_fields.html.erb to the views and add

<div class="entry_field">
    <label>Image :</label>
    <%= f.file_field :image %>
    <%= link_to_remove_fields "remove", f %></div>

Then add the following lines to your application.js file

function remove_fields(link) {
        $(link).prev("input[type=hidden]").val("1");
        $(link).closest(".entry_field").hide();
}

function add_fields(link, association, content) {
        var new_id = new Date().getTime();
        var regexp = new RegExp("new_" + association, "g");
        $(link).parent().before(content.replace(regexp, new_id));
}

In your products model 

  has_many :photos
  accepts_nested_attributes_for :photos
  attr_accessible :description, :name, :photos_attributes

Upvotes: 4

PinnyM
PinnyM

Reputation: 35541

Change:

= fields_for @photo, :html => {:multipart => true} do |fp|

To:

= fields_for :photos, :html => {:multipart => true} do |fp|

And in your controller:

  def new
    @product = Product.new
    @product.photos.build
  end

And in your Product model:

attr_accessible :description, :name, :photos_attributes

Upvotes: 1

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