Model is not a function error in postman

Question

Iam doing basic crud operation in mongodb when i try to insert new post to db i get a message in post man as Test is not a function.

My router function is as follow.

router.route('/createtests').post(function (req, res, next) {

    var Test = new Test(req.body);
    postTest(Test, function (data) {

        res.json({'message': 'The test created sucessfully'});

    });

});

var postTest = function(test, cb){

    Test.save(function(err,data){

        cb(data);

    });

};

My schema is as follows.

var TestSchema = common.Schema({

title                   : String, 
testCreator             : String,
datePosted              : {
                            type: Date,
                            default: Date.now
                            },
totalQuestions          : Number,
totalTime               : Number,
numberOfPeopleTaking    : Number,
dateOfTest              : Date,
marksPerQuestions       : Number,
imageUrl                : String,
testType                : String,

});
var Test = common.conn.model('Test', TestSchema);
console.log(typeof Test);// logging as function
console.log(Test);// logging full model with schema
module.exports = Test;

Iam getting a response as follow

{
"message": "Test is not a function",
"error": {}
}

Answer 1

In your function postTest , you have test with 't' and you are saving with 'T'(Test.save()) : uppercase/lowercase typo. this is what is causing your issue.

var postTest = function(test, cb){

    test.save(function(err,data){ //see the change here 'test' instead of 'Test' 

        cb(data);

    });

};

Also, change common.conn.model to common.model

var Test = common.model('Test', TestSchema);

EDIT

You are using Test as variable name and model name both. change the var to test. It should solve your issue.

router.route('/createtests').post(function (req, res, next) {

    var test = new Test(req.body); //See the change here. 'test' instead of 'Test'
    postTest(test, function (data) { //pass 'test'

        res.json({'message': 'The test created sucessfully'});

    });

});