How to set default image in paperclip?

Question

Ruby on Rails

There is a user model.

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  has_many :posts, dependent: :destroy
  has_many :comments, dependent: :destroy
  has_attached_file :avatar, styles: { medium: "300x300>", thumb: "100x100>" },
                    default_url: "/images/:style/missing.png"
  validates_attachment_content_type :avatar, content_type: /\Aimage\/.*\Z/

  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable
end

View code:

<p>
    <strong>Avatar:</strong> <br>
    <%= image_tag @user.avatar.url(:medium) %>
</p>

I did everything according to the documentation https://github.com/thoughtbot/paperclip
If the user does not have an avatar, then it is not displayed. There is a missing.png image in the /assets/images folder, but I get the output

How to solve the problem?

Answer 1

The solution to this problem is described here:
www.suffix.be/blog/default-image-paperclip
Glad if it helped someone.