https://github.com/johno/url_format

Validate the url format of an attribute.
https://github.com/johno/url_format

Last synced: 2 months ago
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Validate the url format of an attribute.

• Host: GitHub
• URL: https://github.com/johno/url_format
• Owner: johno
• License: mit
• Created: 2013-12-13T17:58:02.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2015-01-27T07:35:55.000Z (almost 10 years ago)
• Last Synced: 2024-10-19T17:29:32.818Z (3 months ago)
• Language: Ruby
• Homepage: http://johnotander.com/gems/2013/12/24/url-format-validator-gem/
• Size: 258 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
# UrlFormat

[![Build Status](https://travis-ci.org/johnotander/url_format.svg?branch=master)](https://travis-ci.org/johnotander/url_format)

This gem validates a URL, adds the `http://` prefix if not included, and provides a `get_domain` method.

## Installation

Add this line to your application's Gemfile:

    gem 'url_format'

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install url_format

## Usage

Using it is as simple as using the `validates` keyword in your model:

```ruby

class User < ActiveRecord::Base

  

  # ...

  validates :url, url_format: true

  # ...

end

```

Now the url attribute will be validated accordingly:

```ruby

User.new(url: 'http://example.com').valid? # => true

User.new(url: 'invalid_url..com').valid?    # => false

```

Also, the model in question doesn't need to inherit from ActiveRecord::Base, you only need to `include ActiveModel::Validations` in your class:

```ruby

require 'url_format'

class Awesome

  include ActiveModel::Validations

  attr_accessor :url

  validates :url, url_format: true

  def domain

    UrlFormat.get_domain(url)

  end

end

awesome = Awesome.new

awesome.url = "www.example.com"

awesome.valid? # => true

awesome.url    # => 'http://www.example.com'

awesome.domain # => 'example.com'

awesome.url = "invalid_url"

awesome.valid? # => false

```

The gem can ensure that a url is prefixed with `http://` as well:

```ruby

UrlFormat.ensure_http_prefix('google.com')         # => 'http://google.com'

UrlFormat.ensure_http_prefix('https://google.com') # => 'https://google.com'

```

## 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