CODEWITHSUNDEEP
javascriptnode.jsexpresspromiseacl
Vishesh
Vishesh

Reputation: 167

Node-ACl throws uhandled rejection error

i am using ACL module in my express application.At the start of the server i define some roles and their permissions using the acl.allow() function.

But it logs in a error saying undefined rejection type.The error vanishes on giving a callback with error param.But i am not very sure about what is throwing the error and how it should be handled.

My snippet code which i am using is : 

    var aclmodule = new acl(new acl.mongodbBackend(config.db.URL, "accesscontrol_"));
    aclmodule.allow([
    {
        roles:['rolea'],
        allows:[
            {resources:['a','b'], permissions:['*']}
        ]
    },
    {
        roles:['roleb','rolec'],
        allows:[
            {resources:['a'], permissions:['view']}
        ]
    },
    {
        roles:['rolec'],
        allows:[
            {resources:['o'], permissions:['view','edit']}
        ]
    }
]);

});

The error logged in console is :

Unhandled rejection TypeError: undefined is not a function at D:\user\web\myapp-web\node_modules\acl\lib\mongodb-backend.js:119:15

at D:\myapp\web\myapp-web\node_modules\acl\node_modules\async\lib\async.

js:607:21 at D:\myapp\web\myapp-web\node_modules\acl\node_modules\async\lib\async. js:246:17 at iterate (D:\myapp\web\myapp-web\node_modules\acl\node_modules\async\l ib\async.js:146:13) at async.eachSeries (D:\myapp\web\myapp-web\node_modules\acl\node_module s\async\lib\async.js:162:9) at _asyncMap (D:\myapp\web\myapp-web\node_modules\acl\node_modules\async \lib\async.js:245:13) at Object.mapSeries (D:\myapp\web\myapp-web\node_modules\acl\node_module s\async\lib\async.js:228:23) at Object.async.series (D:\myapp\web\myapp-web\node_modules\acl\node_mod ules\async\lib\async.js:605:19) at Object.MongoDBBackend.end (D:\myapp\web\myapp-web\node_modules\acl\li b\mongodb-backend.js:35:11) at Object.tryCatcher (D:\myapp\web\myapp-web\node_modules\acl\node_modul es\bluebird\js\main\util.js:26:23) at Object.ret [as endAsync] (eval at (D:\myapp\web\myapp-web \node_modules\acl\node_modules\bluebird\js\main\promisify.js:163:12),

Upvotes: 2

Views: 789

Answers (1)

Y-Love
Y-Love

Reputation: 161

Is config.db.URL a string? If so, this is the cause of your errors. The line it is failing on is (in mongodb-backend.js):

self.db.collection(... -- it is saying that .collection() is undefined. (Which would make sense if "self.db" were only a string.)

Node-acl expects a database instance when creating a new mongodbBackend, like it says in the docs -- for example:

 mongoose.connection.on('connected', function() {
    var myAcl = new acl(new acl.mongodbBackend(mongoose.connection.db));
});

Upvotes: 4

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