var mongoose = require('mongoose');
var uniqueValidator = require('mongoose-unique-validator');
var slug = require('slug');

var QCMSchema = new mongoose.Schema({
    name: { type: String, lowercase: true, unique: true },
    categories: [
        { type: mongoose.Schema.Types.ObjectId, ref: 'QCMCategory' }
    ]
}, {timestamps: true, toJSON: {virtuals: true}});

QCMSchema.plugin(uniqueValidator, { message: 'is already taken' });

QCMSchema.methods.toJSONFor = function(){
    return {
        name: this.name,
        categories: this.categories,
        createdAt: this.createdAt,
        updatedAt: this.updatedAt
    };
};

mongoose.model('QCM', QCMSchema);