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MongoMapper GridFS Attachment gem

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README.markdown

grip

GridFS attachments for MongoMapper.

Installation

The grip gem is hosted on gemcutter.org and uses Miso (http://github.com/Fingertips/Miso) for image resizing

gem install miso grip

Setup (Rails)

# config/environment.rb

config.gem 'grip'

Then:

rake gems:install

Usage (See tests for better docs)

Create a MongoMapper model and include MongoMapper::Grip::HasAttachment and call has_grid_attachment :<attachment_name> to the model. Then if your attachment is an image, you can specify a hash of variants along with their :width & :height.

class Doc
  include MongoMapper::Document
  include MongoMapper::Grip::HasAttachment
  has_grid_attachment :image, :variants => {:thumb => {:width=>50,:height=>50}}
end

To save a file to your model, just send any file to the symbol that you specified.

image = File.open('foo.png', 'r')
@doc = Doc.create(:image => image)

Alternately just set it on the model and save:

@doc.image = image

Each attachment as well as variants respond to the following methods:

puts @doc.image.name 
=> "image"

puts @doc.image.file_size
=> 100

puts @doc.image.file_name
=> "foo.png"

puts @doc.image.grid_key
=> "docs/<id>/image"    

@doc.image.file # contents read from gridfs for serving from rack/metal/controller 

Variants are created after_save and can be referenced through the attachment they belong to:

@doc.image.thumb.name
@doc.image.thumb.file_name
@doc.image.thumb.grid_key
@doc.image.thumb.content_type

License

The MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.


Credits

c. burnett ( github.com/twoism || twoism.posterous.com ) m. mongeau ( github.com/toastyapps )

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