34 lines
1.1 KiB
Crystal
34 lines
1.1 KiB
Crystal
module Kemal
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# Adds support for `_method` magic parameter to simulate PUT, PATCH, DELETE requests in an html form.
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#
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# This middleware is **not** in the default Kemal handlers. You need to explicitly add this to your handlers:
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#
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# ```ruby
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# add_handler Kemal::OverrideMethodHandler
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# ```
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#
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# **Important:** This middleware consumes `params.body` to read the `_method` magic parameter.
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class OverrideMethodHandler
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include HTTP::Handler
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INSTANCE = new
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ALLOWED_METHODS = ["PUT", "PATCH", "DELETE"]
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OVERRIDE_METHOD = "POST"
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OVERRIDE_METHOD_PARAM_KEY = "_method"
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def call(context)
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request = context.request
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if request.method == OVERRIDE_METHOD
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if context.params.body.has_key?(OVERRIDE_METHOD_PARAM_KEY) && override_method_valid?(context.params.body[OVERRIDE_METHOD_PARAM_KEY])
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request.method = context.params.body["_method"].upcase
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end
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end
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call_next(context)
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end
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private def override_method_valid?(override_method : String)
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ALLOWED_METHODS.includes?(override_method.upcase)
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end
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end
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end
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