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