Thumbor Rails

https://github.com/rafaelcaricio/thumbor_rails

thumbor_rails is a client to make easier to use the thumbor imaging service (http://github.com/globocom/thumbor) in Ruby and Rails projects.

You can use this gem by putting the following inside your Gemfile:

gem "thumbor_rails", "1.2.0"

Now generate the thumbor basic client configuration:

rails g thumbor_rails:install

It will generate the basic configuration in config/initializers/thumbor_rails.rb, which has the following configuration options available:

• server_url. Required. The location of your Thumbor server. If server_url contains %d, it will be interpolated to 0-3, just like asset_host for Rails.
• sercurity_key. Optional. This must match your Thumbor server's security key.
• force_no_protocol_in_source_url. Optional, defaults to false. If true, the protocol is removed from any image source passed into thumbor_url. This may be done for aesthetic reasons, or due to certain CDN/server configurations.

There are two basic helpers you can use in your views:

thumbor_url
thumbor_image_tag

The thumbor_url helper allows you to to generate a thumbor url, a simple use is:

<%= thumbor_url "http://example.com/awesome_image.jpg" %>

Of course, you can pass various parameters to thumbor as described in the ruby-thumbor gem. An exemple would be:

<%= thumbor_url "http://example.com/awesome_image.jpg", width: 200, height: 300 %>

The thumbor_image_tag helper allows you to simplify the usage when creating a simple image tag in your views. It returns a complete image tag with the generated thumbor url in the src attribute of the img tag. Example:

<%= thumbor_image_tag "http://myimage.jpg", unsafe: true, width: 100, height: 100 %>

Will result in something like:

<img alt="Myimage" src="http://thumbor.example.com/unsafe/100x100/http://myimage.jpg" />

Setting the DISABLE_THUMBOR environment variable will disable thumbor_image_tag and thumbor_url and they will return the original url instead. This is in case you don't want to use Thumbor locally or want to disable it temporarily.

• Rafael Caricio (@rafaelcaricio)

and contributors.

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

If you do not have yet an instance of thumbor for you. You can get one for free up and running in the OpenShift Cloud.