CODEWITHSUNDEEP
ruby-on-railspaperclip
Neeraj
Neeraj

Reputation: 9145

Ruby on Rails: paperclip error

I have a form that contains a file upload field named "application_path". I installed "Paperclip" GEM. But when i simply submit my form without selecting any file then i get error

undefined method `application_path_file_name' for #<ApplicationInstance:0x0000000561bc28>

Here are my request parameters shown in that error page

{"utf8"=>"✓",
 "authenticity_token"=>"p3Y0SZT6wIonrrnzughybh8hywnkE1i3uBnxwrU4u9w=",
 "application_instance"=>{"device_id"=>"",
 "application_version_profile_id"=>""},
 "commit"=>"Create Application instance"}

The above parameter does not contain "application_path" with blank value. Here is my Model

class ApplicationInstance < ActiveRecord::Base
  attr_accessible :application_version_profile_id, :device_id, :is_deleted, :application_path

  # Validations  
  validates :application_version_profile_id, :presence => true  
  validates :device_id, :presence => true
  validates_attachment_presence :application_path                    
  validates_attachment_size :application_path, :less_than=>1.megabyte

What i am missing here?

Upvotes: 0

Views: 94

Answers (2)

jvnill
jvnill

Reputation: 29599

You are missing the line that sets up paperclip for ApplicationInstance. in your application_instance.rb

has_attached_file :application_path, styles: { medium: '300x300>', thumb: '100x100>' }

You may also be missing the required columns for paperclip which you can generate by 

rails g paperclip application_instance application_path

Upvotes: 2

Ganesh Kunwar
Ganesh Kunwar

Reputation: 2653

Following link may help you
Upload image using paperclip in Rails

Upvotes: 2

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