angularjs - Bad request in MEAN stack app trying to append to an array in a schema -

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i trying pass array of interest rates mongoose schema consisting of accounts. want store interest rates change @ dates.

however, when trigger create function dev tools tell me have done bad: 

**400 bad request**

i have been using this template.

the view: has been disconnected pass: 

var interest = {     rate: 1,     date: date.now() };

the controller updating:

// create new account $scope.create = function() {      // create new account object     var account = new accounts ({         name: this.name,         desc: this.desc,         interests: []     });     // problematic part     // store interest:     var interest = {         rate: 1,         date: date.now()     };     account.interests.push(interest);     // problematic part end       // redirect after save     account.$save(function(response) {         $location.path('accounts/' + response._id);          // clear form fields         $scope.name = '';     }, function(errorresponse) {         $scope.error = errorresponse.data.message;     }); };

the mongoose schema:

'use strict';  /**  * module dependencies.  */ var mongoose = require('mongoose'),     schema = mongoose.schema;   /**  *  * interest rate schema  */ var interestrate = new schema({   rate:{     type: number,     default: 0,     trim: true   },   date:{   type   : date,   default: '',   required: 'when interest updated',   trim: true   }  });  /**  * account schema  */ var accountschema = new schema({     name: {         type: string,         default: '',         required: 'please fill account name',         trim: true     },     desc:{       type: string,       default: '',       trim: true     },     interests:         [{ type : schema.types.objectid, ref: 'interestrate' }],     amount:{       type: number,       default:0,       trim: true     },     created: {         type: date,         default: date.now     },     user: {         type: schema.objectid,         ref: 'user'     } });  mongoose.model('account', accountschema);

you can try leaving interest rate frond end structure , not define in model, in account schema set interests type of [] , push objects

var accountschema = new schema({ name: {     type: string,     default: '',     required: 'please fill account name',     trim: true }, desc:{   type: string,   default: '',   trim: true }, interests:     type:[],     default:[] }, created: {     type: date,     default: date.now }, user: {     type: schema.objectid,     ref: 'user' }

});

just this


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