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Beego/filter.go
dan pittman 0e786fa4af
adds ability to reset params after a filter runs
When a filter is run _after_ the router completes, it's input params,
such as `":splat"` will have been overwritten by the filter's router pass.
This commit adds the ability to tell the router to revert to the previous input
params after running a filter.
2016-08-07 07:44:30 -07:00

45 lines
1.5 KiB
Go

// Copyright 2014 beego Author. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package beego
import "github.com/astaxie/beego/context"
// FilterFunc defines a filter function which is invoked before the controller handler is executed.
type FilterFunc func(*context.Context)
// FilterRouter defines a filter operation which is invoked before the controller handler is executed.
// It can match the URL against a pattern, and execute a filter function
// when a request with a matching URL arrives.
type FilterRouter struct {
filterFunc FilterFunc
tree *Tree
pattern string
returnOnOutput bool
resetParams bool
}
// ValidRouter checks if the current request is matched by this filter.
// If the request is matched, the values of the URL parameters defined
// by the filter pattern are also returned.
func (f *FilterRouter) ValidRouter(url string, ctx *context.Context) bool {
isOk := f.tree.Match(url, ctx)
if isOk != nil {
if b, ok := isOk.(bool); ok {
return b
}
}
return false
}