Move the crudhandler to own repo (#27)

vendor/code.vikunja.io/web/handler/helper.go

@@ -0,0 +1,46 @@
+//  Vikunja is a todo-list application to facilitate your life.
+//  Copyright 2018 Vikunja and contributors. All rights reserved.
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package handler
+
+import (
+	"code.vikunja.io/web"
+	"github.com/labstack/echo"
+	"github.com/op/go-logging"
+	"net/http"
+)
+
+// WebHandler defines the webhandler object
+// This does web stuff, aka returns json etc. Uses CRUDable Methods to get the data
+type WebHandler struct {
+	EmptyStruct func() CObject
+}
+
+// CObject is the definition of our object, holds the structs
+type CObject interface {
+	web.CRUDable
+	web.Rights
+}
+
+// HandleHTTPError does what it says
+func HandleHTTPError(err error, ctx echo.Context) *echo.HTTPError {
+	if a, has := err.(web.HTTPErrorProcessor); has {
+		errDetails := a.HTTPError()
+		return echo.NewHTTPError(errDetails.HTTPCode, errDetails)
+	}
+	ctx.Get("LoggingProvider").(*logging.Logger).Error(err.Error())
+	return echo.NewHTTPError(http.StatusInternalServerError)
+}