Paperclip Montage
Paperclip Montages aim is to make it easier to create Paperclip avatars for meta models. It is a wrapper for ImageMagick's montage tool.
This was build for Oplerno's online education platform for combining course avatars so they can be displayed as certificate avatars.
Installation
gem 'paperclip_montage'
gem install paperclip_montage
Example
This is a simple example in which Meta creates a combined avatar.
class Avatar < ActiveRecord::Base
has_attached_file :avatar, :styles => { :medium => "300x300>", :thumb => "100x100>" }
has_and_belongs_to_many :metas
validates_attachment_content_type :avatar, :content_type => /\Aimage\/.*\Z/
endclass Meta < ActiveRecord::Base
#after_update :reprocess_montage
has_and_belongs_to_many :avatars
has_attached_file :montage,
processors: [:montage],
:styles => { medium: { geometry: "300x300>", source: :avatars} , thumb: { geometry: "100x100>" } }
validates_attachment :montage, :attachment_presence => true,
:content_type => { :content_type => "image/jpeg" }
def reprocess_montage
montage.reprocess!
end
endAfter any changes to the icon for an Avatar the method reprocess_montage must be called on the Meta object.
Acknowledgements
Test image by Matthias Georg - https://www.flickr.com/photos/114805503@N05/15811868778/
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