My current project involves working with the MEAN stack, particularly using MEAN.js. Although the documentation provides a good explanation of everything, I am facing a challenge when it comes to associating one entity or Model with another.
To give an example, generating CRUD operations for Ideas and Polls is straightforward. However, what if I need to establish a one-to-many relationship between "polls" and "ideas"?
In my polls.client.controller.js file, I believe I would do something like this:
// Create new Poll
$scope.create = function() {
// Create new Poll object
var poll = new Polls ({
ideaId: this.idea.ideaId,//here I associate a poll with an Idea
vote1: this.vote1,
vote2: this.vote2,
vote3: this.vote3,
vote4: this.vote4,
vote5: this.vote5
});
// Redirect after save
poll.$save(function(response) {
$location.path('polls/' + response._id);
// Clear form fields
$scope.name = '';
}, function(errorResponse) {
$scope.error = errorResponse.data.message;
});
};
However, when the Angular model gets sent to the Express.js backend, I don't see any reference to the Idea in the request. All I receive is the Poll.
/**
* Create a Poll
*/
exports.create = function(req, res) {
var poll = new Poll(req.body);
poll.user = req.user;
//poll.ideaId = req.ideaId;//undefined
poll.save(function(err) {
if (err) {
return res.status(400).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.jsonp(poll);
}
});
};
Here is the Mongoose Model for reference:
'use strict';
/**
* Module dependencies.
*/
var mongoose = require('mongoose'),
Schema = mongoose.Schema;
/**
* Poll Schema
*/
var PollSchema = new Schema({
vote1: {
type: Number
},
vote2: {
type: Number
},
vote3: {
type: Number
},
vote4: {
type: Number
},
vote5: {
type: Number
},
created: {
type: Date,
default: Date.now
},
user: {
type: Schema.ObjectId,
ref: 'User'
},
idea: {
type: Schema.ObjectId,
ref: 'Idea'
}
});
mongoose.model('Poll', PollSchema);
I understand that there may be an error in my implementation, so any guidance or resources on how to accomplish this task correctly would be greatly appreciated.