MongoDB Adapter Build Status Coverage Status Godoc

MongoDB Adapter is the Mongo DB adapter for Casbin. With this library, Casbin can load policy from MongoDB or save policy to it.


go get

Simple Example

package main

import (

func main() {
	// Initialize a MongoDB adapter and use it in a Casbin enforcer:
	// The adapter will use the database named "casbin".
	// If it doesn't exist, the adapter will create it automatically.
	a := mongodbadapter.NewAdapter("") // Your MongoDB URL. 
	// Or you can use an existing DB "abc" like this:
	// The adapter will use the table named "casbin_rule".
	// If it doesn't exist, the adapter will create it automatically.
	// a := mongodbadapter.NewAdapter("")
	e := casbin.NewEnforcer("examples/rbac_model.conf", a)
	// Load the policy from DB.
	// Check the permission.
	e.Enforce("alice", "data1", "read")
	// Modify the policy.
	// e.AddPolicy(...)
	// e.RemovePolicy(...)
	// Save the policy back to DB.

Filtered Policies

import ""

// This adapter also implements the FilteredAdapter interface. This allows for
// efficent, scalable enforcement of very large policies:
filter := &bson.M{"v0": "alice"}

// The loaded policy is now a subset of the policy in storage, containing only
// the policy lines that match the provided filter. This filter should be a
// valid MongoDB selector using BSON. A filtered policy cannot be saved.

Getting Help


This project is under Apache 2.0 License. See the LICENSE file for the full license text.




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func NewAdapter

func NewAdapter(url string) persist.Adapter

NewAdapter is the constructor for Adapter. If database name is not provided in the Mongo URL, 'casbin' will be used as database name.

func NewAdapterWithDialInfo

func NewAdapterWithDialInfo(dI *mgo.DialInfo) persist.Adapter

NewAdapterWithDialInfo is an alternative constructor for Adapter that does the same as NewAdapter, but uses mgo.DialInfo instead of a Mongo URL

func NewFilteredAdapter

func NewFilteredAdapter(url string) persist.FilteredAdapter

NewFilteredAdapter is the constructor for FilteredAdapter. Casbin will not automatically call LoadPolicy() for a filtered adapter.


type CasbinRule

type CasbinRule struct {
	PType string
	V0    string
	V1    string
	V2    string
	V3    string
	V4    string
	V5    string

CasbinRule represents a rule in Casbin.

Source Files