75 lines
2.5 KiB
Ruby
75 lines
2.5 KiB
Ruby
module ActionController
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# Rewrites URLs for Base.redirect_to and Base.url_for in the controller.
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class UrlRewriter #:nodoc:
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RESERVED_OPTIONS = [:anchor, :params, :only_path, :host, :protocol, :trailing_slash, :skip_relative_url_root]
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def initialize(request, parameters)
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@request, @parameters = request, parameters
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end
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def rewrite(options = {})
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rewrite_url(rewrite_path(options), options)
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end
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def to_str
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"#{@request.protocol}, #{@request.host_with_port}, #{@request.path}, #{@parameters[:controller]}, #{@parameters[:action]}, #{@request.parameters.inspect}"
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end
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alias_method :to_s, :to_str
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private
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def rewrite_url(path, options)
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rewritten_url = ""
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unless options[:only_path]
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rewritten_url << (options[:protocol] || @request.protocol)
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rewritten_url << (options[:host] || @request.host_with_port)
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end
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rewritten_url << @request.relative_url_root.to_s unless options[:skip_relative_url_root]
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rewritten_url << path
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rewritten_url << '/' if options[:trailing_slash]
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rewritten_url << "##{options[:anchor]}" if options[:anchor]
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rewritten_url
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end
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def rewrite_path(options)
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options = options.symbolize_keys
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options.update(options[:params].symbolize_keys) if options[:params]
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if (overwrite = options.delete(:overwrite_params))
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options.update(@parameters.symbolize_keys)
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options.update(overwrite)
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end
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RESERVED_OPTIONS.each {|k| options.delete k}
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path, extra_keys = Routing::Routes.generate(options.dup, @request) # Warning: Routes will mutate and violate the options hash
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path << build_query_string(options, extra_keys) unless extra_keys.empty?
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path
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end
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# Returns a query string with escaped keys and values from the passed hash. If the passed hash contains an "id" it'll
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# be added as a path element instead of a regular parameter pair.
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def build_query_string(hash, only_keys = nil)
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elements = []
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query_string = ""
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only_keys ||= hash.keys
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only_keys.each do |key|
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value = hash[key]
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key = CGI.escape key.to_s
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if value.class == Array
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key << '[]'
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else
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value = [ value ]
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end
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value.each { |val| elements << "#{key}=#{Routing.extract_parameter_value(val)}" }
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end
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query_string << ("?" + elements.join("&")) unless elements.empty?
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query_string
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end
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end
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end
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