I'm using Dragonfly in a project that returns a large stream of photos and was looking to optimize the URLs. I'm currently getting image URLs like:
Which is over 256 bytes. I'd like something like:
http://localhost:3000/media/1024/240x240_medium.jpg
That is conforming to:
/media/:id/:format
How would I go about adding this when using Dragonfly and Rails such that :format maps to a chain of operations and :id is used to find the model or image? Thanks!
Edit:
I've added custom Mime::Typefor each of the formats I need and have the following working:
# config/routes.rb
match "/photos/:id/:style", to: "photos#show", as: :media
# app/controllers/photos_controller.rb
def show
@photo = Photo.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.jpg { cache('public', 86400); redirect_to @photo.url(params[:style], 'jpg') }
format.png { cache('public', 86400); redirect_to @photo.url(params[:style], 'png') }
format.gif { cache('public', 86400); redirect_to @photo.url(params[:style], 'gif') }
end
end
# app/views/photos/show.html.erb
<%= image_tag media_path(id: @photo.id, style: 'small', format: 'png') %>
However this results in a 302 for each image (but otherwise works fine). Is it possible to handle this as a render or somehow do an internal redirect (i.e. not require the client to make duplicate requests)?
you shouldn't need to use a controller action - you can use a dragonfly endpoint - see http://markevans.github.com/dragonfly/file.URLs.html#Routed_Endpoints
e.g.
match '/photos/:id/:style.:format' => Dragonfly[:images].endpoint { |params, app|
Photo.find(params[:id]).image.thumb(params[:style]).encode(params[:format])
}
or something like that (haven't tried the above code but it'll be something along those lines)