https://github.com/anthonator/paperclip-dimension-validator

Validate image height and width for Paperclip
https://github.com/anthonator/paperclip-dimension-validator

paperclip rails-validations

Last synced: about 2 months ago
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Validate image height and width for Paperclip

• Host: GitHub
• URL: https://github.com/anthonator/paperclip-dimension-validator
• Owner: anthonator
• License: mit
• Created: 2014-07-22T21:33:31.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2016-06-07T13:58:00.000Z (over 8 years ago)
• Last Synced: 2024-10-12T03:53:02.914Z (2 months ago)
• Topics: paperclip, rails-validations
• Language: Ruby
• Size: 196 KB
• Stars: 15
• Watchers: 3
• Forks: 11
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
# paperclip-dimension-validator

Validate them dimensions!

## Installation

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

## Usage

This gem introduces the ```dimensions``` validator for Paperclip's

```validates_attachment```. ```dimensions``` accepts a hash of ```height``` and

``` width``` integer pixel values.

**Example**

```ruby

class Image < ActiveRecord::Base

  has_attached_file :avatar

  validates_attachment :avatar, dimensions: { height: 30, width: 30 }

end

```

## Testing

paperclip-dimension-validator includes rspec-compatible matchers for testing.

**Note** In order to use these matchers make sure to include either [chunky_png](https://github.com/wvanbergen/chunky_png) or

[oily_png](https://github.com/wvanbergen/oily_png) as a dependency in your Gemfile.

**Gemfile**

```ruby

group :test do

  gem 'chunky_png'

end

```

**RSpec**

In spec_helper.rb, you'll need to require the matchers:

```ruby

require 'paperclip/matchers/validate_attachment_dimesions_matcher'

```

And include the paperclip matchers module:

```ruby

RSpec.configure do |config|

  config.include Paperclip::Shoulda::Matchers

end

```

**Example**

```ruby

it { should validate_attachment_dimensions(:avatar).height(30).width(30) }

```

## Contributing

1. Fork it

2. Create your feature branch (`git checkout -b my-new-feature`)

3. Commit your changes (`git commit -am 'Add some feature'`)

4. Push to the branch (`git push origin my-new-feature`)

5. Create new Pull Request