I need the ability to put the processed image's dimensions.
I have in my ImageUploader class:
version :post do
process :resize_to_fit => [200, nil]
end
Is there a way that I could get the image's dimensions similar to this?
height = @picture.image_height(:post)
You can adjust and use the method described here: http://code.dblock.org/carrierwave-saving-best-image-geometry
It adds a process then call Magick's method to fetch image geometry.
Code:
version :post do
process :resize_to_fit => [200, nil]
process :get_geometry
def geometry
@geometry
end
end
def get_geometry
if (@file)
img = ::Magick::Image::read(@file.file).first
@geometry = [ img.columns, img.rows ]
end
end
You can hook onto the :cache and :retrieve_from_cache methods
There is no need to rely on system commands either:
# Somewhere in your uploader:
attr_reader :geometry
after :cache, :capture_size
after :retrieve_from_cache, :capture_size
def capture_size(*args)
img = ::MiniMagick::Image::read(File.binread(@file.file))
@geometry = [img[:width], img[:height]]
end
http://www.glebm.com/2012/05/carrierwave-image-dimensions.html
i googled some around a came onto a post with the following:
source link http://groups.google.com/group/carrierwave/browse_thread/thread/c5e93b45bde8a85e?fwc=1&pli=1
class HeaderUploader < CarrierWave::Uploader::Base
storage :right_s3
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
def url
["http://#{s3_bucket}.s3.amazonaws.com/", path].compact.join
end
before :cache, :capture_size_before_cache
before :retrieve_from_cache, :capture_size_after_retrieve_from_cache
def capture_size_before_cache(new_file)
model.header_width, model.header_height = `identify -format "%wx
%h" #{new_file.path}`.split(/x/)
end
def capture_size_after_retrieve_from_cache(cache_name)
model.header_width, model.header_height = `identify -format "%wx
%h" #...@file.path}`.split(/x/)
end
def dimensions
"#{model.header_width}x#{model.header_height}"
end
end
