40 lines
1.5 KiB
Ruby
40 lines
1.5 KiB
Ruby
module RenderExpand
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extend ActiveSupport::Concern
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included do
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ActionController.add_renderer :pdf do |template, options|
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file = File.open(Rails.root.join('app/templates', template << '.html.erb'))
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html = ERB.new(file.read).result(binding)
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kit = PDFKit.new(html)
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base_css = %w(app/templates/shared/main.css)
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base_css.each { |css| kit.stylesheets << Rails.root.join(css) }
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Array.wrap(options.delete(:stylesheets)).each do |path|
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kit.stylesheets << Rails.root.join('app/templates', path)
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end
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send_data kit.to_pdf, filename: options[:filename], disposition: options[:disposition] || 'attachment', type: 'application/pdf'
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end
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ActionController.add_renderer :exam_pdf do |template, options|
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file = File.open(Rails.root.join('app/templates', template << '.html.erb'))
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html = ERB.new(file.read).result(binding)
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kit = PDFKit.new(html)
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# PDFKit初始化后再添加样式文件到stylesheets，会出现在页面的<!DOCTYPE>定义不起作用，文档模式为默认为BackCompat，从而导致katex不起作用
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# 而测试发现通过配置添加css样式文件不会有影响
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PDFKit.configure do |config|
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config.default_options = {
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:"user-style-sheet" => Rails.root.join('app/templates', options[:stylesheets])
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}
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end
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send_data kit.to_pdf, filename: options[:filename], disposition: options[:disposition] || 'attachment', type: 'application/pdf'
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end
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end
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end |