Return 200 for denied request.

routers/base.go

@@ -0,0 +1,44 @@
+// Copyright 2021 The casbin Authors. 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 routers
+
+import "github.com/astaxie/beego/context"
+
+type Response struct {
+	Status string      `json:"status"`
+	Msg    string      `json:"msg"`
+	Data   interface{} `json:"data"`
+	Data2  interface{} `json:"data2"`
+}
+
+func responseError(ctx *context.Context, error string, data ...interface{}) {
+	resp := Response{Status: "error", Msg: error}
+	switch len(data) {
+	case 2:
+		resp.Data2 = data[1]
+		fallthrough
+	case 1:
+		resp.Data = data[0]
+	}
+
+	err := ctx.Output.JSON(resp, true, false)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func denyRequest(ctx *context.Context) {
+	responseError(ctx, "Unauthorized operation")
+}