56 lines
1.7 KiB
Ruby
56 lines
1.7 KiB
Ruby
module PdfHelper
|
|
require 'prince'
|
|
|
|
def self.included(base)
|
|
base.class_eval do
|
|
alias_method_chain :render, :princely
|
|
end
|
|
end
|
|
|
|
def render_with_princely(options = nil, *args, &block)
|
|
if options.is_a?(Hash) && options.has_key?(:pdf)
|
|
options[:name] ||= options.delete(:pdf)
|
|
make_and_send_pdf(options.delete(:name), options)
|
|
else
|
|
render_without_princely(options, *args, &block)
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def make_pdf(options = {})
|
|
options[:stylesheets] ||= []
|
|
options[:layout] ||= false
|
|
options[:template] ||= File.join(controller_path,action_name)
|
|
|
|
prince = Prince.new()
|
|
# Sets style sheets on PDF renderer
|
|
prince.add_style_sheets(*options[:stylesheets].collect{|style| stylesheet_file_path(style)})
|
|
|
|
html_string = render_to_string(:template => options[:template], :layout => options[:layout])
|
|
|
|
# Make all paths relative, on disk paths...
|
|
html_string.gsub!(".com:/",".com/") # strip out bad attachment_fu URLs
|
|
html_string.gsub!( /src=["']+([^:]+?)["']/i ) { |m| "src=\"#{RAILS_ROOT}/public/" + $1 + '"' } # re-route absolute paths
|
|
|
|
# Remove asset ids on images with a regex
|
|
html_string.gsub!( /src=["'](\S+\?\d*)["']/i ) { |m| 'src="' + $1.split('?').first + '"' }
|
|
|
|
# Send the generated PDF file from our html string.
|
|
return prince.pdf_from_string(html_string)
|
|
end
|
|
|
|
def make_and_send_pdf(pdf_name, options = {})
|
|
send_data(
|
|
make_pdf(options),
|
|
:filename => pdf_name + ".pdf",
|
|
:type => 'application/pdf'
|
|
)
|
|
end
|
|
|
|
def stylesheet_file_path(stylesheet)
|
|
stylesheet = stylesheet.to_s.gsub(".css","")
|
|
File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR,"#{stylesheet}.css")
|
|
end
|
|
end
|