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middleware: add method override
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39
middleware/method_override.go
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39
middleware/method_override.go
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@ -0,0 +1,39 @@
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package middleware
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import (
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"github.com/labstack/echo"
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)
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const (
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HttpMethodOverrideHeader = "X-HTTP-Method-Override"
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)
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func OverrideMethod() echo.MiddlewareFunc {
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return Override()
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}
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// Override checks for the X-HTTP-Method-Override header
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// or the body for parameter, `_method`
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// and uses the http method instead of Request.Method.
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// It isn't secure to override e.g a GET to a POST,
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// so only Request.Method which are POSTs are considered.
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func Override() echo.MiddlewareFunc {
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return func(next echo.HandlerFunc) echo.HandlerFunc {
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return func(c echo.Context) error {
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originalMethod := c.Request().Method()
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if originalMethod == "POST" {
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m := c.FormValue("_method")
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if m != "" {
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c.Request().SetMethod(m)
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}
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m = c.Request().Header().Get(HttpMethodOverrideHeader)
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if m != "" {
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c.Request().SetMethod(m)
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}
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}
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return next(c)
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}
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}
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}
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