Validate them dimensions!
Add this line to your application's Gemfile:
gem 'paperclip-dimension-validator'
And then execute:
$ bundle
Or install it yourself as:
$ gem install paperclip-dimension-validator
This gem introduces the dimensions validator for Paperclip's
validates_attachment. dimensions accepts a hash of height and
width integer pixel values.
Example
class Image < ActiveRecord::Base
has_attached_file :avatar
# Enforce exact width/height
validates_attachment :avatar, dimensions: { height: 30, width: 30 }
endExample 2
class Image < ActiveRecord::Base
has_attached_file :avatar
# Enforce min/max width/height
validates_attachment :avatar, dimensions: { min_height: 30, min_width: 30, max_height: 2000, max_width: 2000 }
endExample 3
class Image < ActiveRecord::Base
has_attached_file :avatar
# Ensure (width x height) is between 100 & 10000
validates_attachment :avatar, dimensions: { min_pixels: 100, max_pixels: 10000 }
endpaperclip-dimension-validator includes rspec-compatible matchers for testing.
Note In order to use these matchers make sure to include either chunky_png or oily_png as a dependency in your Gemfile.
Gemfile
group :test do
gem 'chunky_png'
endRSpec
In spec_helper.rb, you'll need to require the matchers:
require 'paperclip/matchers/validate_attachment_dimesions_matcher'And include the paperclip matchers module:
RSpec.configure do |config|
config.include Paperclip::Shoulda::Matchers
endExample
it { should validate_attachment_dimensions(:avatar).height(30).width(30) }- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
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