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0e06e8a692
This middleware is only for Public Exceptions.
This follows bd8c0b8a
51 lines
1.6 KiB
Ruby
51 lines
1.6 KiB
Ruby
module ActionDispatch
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# A simple Rack application that renders exceptions in the given public path.
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class PublicExceptions
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attr_accessor :public_path
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def initialize(public_path)
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@public_path = public_path
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end
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def call(env)
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exception = env["action_dispatch.exception"]
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status = env["PATH_INFO"][1..-1]
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request = ActionDispatch::Request.new(env)
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content_type = request.formats.first
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format = (mime = Mime[content_type]) && "to_#{mime.to_sym}"
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body = { :status => status, :error => exception.message }
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render(status, body, :format => format, :content_type => content_type)
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end
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private
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def render(status, body, options)
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format = options[:format]
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if format && body.respond_to?(format)
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render_format(status, body.public_send(format), options)
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else
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render_html(status)
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end
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end
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def render_format(status, body, options)
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[status, {'Content-Type' => "#{options[:content_type]}; charset=#{ActionDispatch::Response.default_charset}",
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'Content-Length' => body.bytesize.to_s}, [body]]
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end
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def render_html(status)
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found = false
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path = "#{public_path}/#{status}.#{I18n.locale}.html" if I18n.locale
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path = "#{public_path}/#{status}.html" unless path && (found = File.exist?(path))
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if found || File.exist?(path)
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body = File.read(path)
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[status, {'Content-Type' => "text/html; charset=#{Response.default_charset}", 'Content-Length' => body.bytesize.to_s}, [body]]
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else
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[404, { "X-Cascade" => "pass" }, []]
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end
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end
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end
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end
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