43 lines
1.5 KiB
Crystal
43 lines
1.5 KiB
Crystal
# Route is the main building block of Kemal.
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# It takes 3 parameters method, path and a block to specify
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# what action to be done if the route is matched.
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class Kemal::Route
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getter handler
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getter components
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def initialize(@method, path, &@handler : Kemal::Context -> _)
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@components = path.split "/"
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end
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def match?(request)
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check_for_method_override!(request)
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return nil unless request.override_method == @method
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components = request.path.not_nil!.split "/"
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return nil unless components.size == @components.size
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@components.zip(components) do |route_component, req_component|
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unless route_component.starts_with? ':'
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return nil unless route_component == req_component
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end
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end
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true
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end
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# checks if request params contain _method param to override request incoming method
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def check_for_method_override!(request)
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request.override_method = request.method
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if request.method == "POST"
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params = Kemal::ParamParser.new(self, request).parse_request
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if params.has_key?("_method") && self.override_method_valid?(params["_method"])
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request.override_method = params["_method"]
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end
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end
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end
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# checks if method contained in _method param is valid one
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def override_method_valid?(override_method)
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return false unless override_method.is_a?(String)
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override_method = override_method.upcase
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return (override_method == "PUT" || override_method == "PATCH" || override_method == "DELETE")
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end
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end
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