Basically, I’m trying to crop multiple images out of a remote/original
scene… Think flickr ‘tagging’, only, the pixs in the tagged boxes
become their own unique images… by way of simulating an upload from
the controller using attachment fu… can’t quite figure out the
specific method in fu that would allow me to do this… I’m so near the
edge right now!@ UGH =(
CONTROLLER:
SCENE.RB
# POST /yings
# POST /yings.xml
def create
@ying = Ying.new(params[:ying])
scene = Scene.find(params[:ying][:scene_id])
scene.yings << @ying
@ying.scale_to_scene(params[:ying], scene)
avatar = Avatar.create!(:uploaded_data => params[:ying]
[:uploaded_data],
:content_type => ‘image/png’,
:filename=> “#{RAILS_ROOT}/public/images/avatars/yings/
#{@ying.id}_thing.png”,
:ying_id => self.id,
:size => (@ying.width).to_i * (@ying.height).to_i
)
avatar.ying_id = @ying.id
avatar.scene_id = nil
avatar.user_id = nil
@ying.avatar = avatar
avatar.thumbnails.clear
# avatar.save!
respond_to do |format|
if @ying.save_with_avatar(avatar)
flash[:notice] = 'Ying was successfully created.'
format.html { render :action => "show" }
format.xml { render :xml => @ying, :status
=> :created, :location => @ying }
else
format.html { render :action => “new” }
format.xml { render :xml => @ying.errors, :status
=> :unprocessable_entity }
end
end
end
YING.rb
def scale_to_scene(params, scene)
x1 = params[:x1].to_fscene.wscale.to_f
y1 = params[:y1].to_iscene.hscale.to_f
width = params[:width].to_fscene.wscale.to_f
height = params[:height].to_fscene.hscale.to_f
img = Magick::Image.read("#{RAILS_ROOT}/
public#{scene.avatar.public_filename}")[0]
chopped = img.crop(Magick::ForgetGravity, x1, y1, width, height)
path = “#{RAILS_ROOT}/public/images/avatars/yings/
#{self.id}_thing.png”
chopped = chopped.write(path)
#create_or_update_thumbnail(path, suffix, *size)
end
avatar_system.rb
attr_accessor :uploaded_avatar_data
def save_with_avatar(params)
avatar = Avatar.new
begin
self.transaction do
if params[:uploaded_avatar_data] &&
params[:uploaded_avatar_data].size > 0
avatar.uploaded_data = (params[:uploaded_avatar_data])
avatar.thumbnails.clear
avatar.save!
self.avatar = avatar
end
save!
end
rescue
if avatar.errors.on(:size)
errors.add_to_base(“Uploaded image is too big (500-KB
max).”)
end
if avatar.errors.on(:content_type)
errors.add_to_base(“Uploaded image content-type is not
valid.”)
end
false
end
end