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Contents
module Refinery
module Helpers
module ImageHelper
# replace all system images with a thumbnail version of them (handy for all images inside a page part)
# for example, <%= content_fu(@page[:body], '96x96#c') %> converts all /system/images to a 96x96 cropped thumbnail
def content_fu(content, thumbnail)
raise NotImplementedError # todo: implement for new syntax.
content.scan(/\/system\/images([^\"\ ]*)/).flatten.each do |match|
parts = match.split(".")
extension = parts.pop
content.gsub!(match, "#{parts.join(".")}_#{thumbnail}.#{extension}")
end unless content.blank?
return content
end
# image_fu is a helper for inserting an image that has been uploaded into a template.
# Say for example that we had a @model.image (@model having a belongs_to :image relationship)
# and we wanted to display a thumbnail cropped to 200x200 then we can use image_fu like this:
# <%= image_fu @model.image, '200x200' %> or with no thumbnail: <%= image_fu @model.image %>
def image_fu(image, geometry = nil, options={})
if image.present?
# call rails' image tag function with default alt tag.
# if any other options were supplied these are merged in and can replace the defaults.
# if the geomtry is nil, then we know the image height and width already.
image_tag(image.thumbnail(geometry).url, {
:alt => image.respond_to?(:title) ? image.title : image.image_name,
:width => (image.image_width if geometry.nil?),
:height => (image.image_height if geometry.nil?)
}.merge(options))
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems