Created
January 27, 2014 16:12
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| var filesystem = require('fs'); | |
| var _ = require('lodash'); | |
| var models = {}; | |
| var relationships = {}; | |
| var orm = function orm() { | |
| var Sequelize = require('sequelize'); | |
| var sequelize = null; | |
| var modelsPath = ''; | |
| this.setup = function(path, database, username, password, obj) { | |
| modelsPath = path; | |
| if (arguments.length === 3) { | |
| sequelize = new Sequelize(database, username); | |
| } else if (arguments.length === 4) { | |
| sequelize = new Sequelize(database, username, password); | |
| } else if (arguments.length === 5) { | |
| // _.extend(obj, {logging: console.log}); | |
| sequelize = new Sequelize(database, username, password, obj); | |
| } | |
| init(); | |
| return this; | |
| }; | |
| this.model = function(name) { | |
| return models[name]; | |
| }; | |
| this.Sequelize = function() { | |
| return Sequelize; | |
| }; | |
| this.getSequelize = function() { | |
| return sequelize; | |
| }; | |
| function init() { | |
| filesystem.readdirSync(modelsPath).forEach(function(name) { | |
| var object = require(modelsPath + '/' + name); | |
| var options = object.options || {}; | |
| var modelName = name.replace(/\.js$/i, ''); | |
| // console.log('models[' + modelName + '] = sequelize.define(' + modelName + ',' + object.model + ',' + JSON.stringify(options) + ')'); | |
| models[modelName] = sequelize.define(modelName, object.model, options); | |
| if ('relationships' in object) { | |
| relationships[modelName] = object.relationships; | |
| } | |
| }); | |
| for (var name in relationships) { | |
| var relation = relationships[name]; | |
| for (var relName in relation) { | |
| var related = relation[relName]; | |
| if(Object.prototype.toString.call( relation[relName] ) === '[object Array]') { | |
| for(var i=0; i < relation[relName].length; i++) { | |
| if(Object.prototype.toString.call( relation[relName][i] ) === '[object String]') { | |
| models[name][relName](models[relation[relName][i]] ); | |
| } else if (Object.prototype.toString.call(relation[relName][i]) === '[object Object]') { | |
| // continue; | |
| // console.log('models[' + name + '][' + relName + '](' + relation[relName][i].model + ',' + JSON.stringify(relation[relName][i].opts) + ')'); | |
| // console.log(relation[relName][i].opts); | |
| models[name][relName](models[relation[relName][i].model], relation[relName][i].opts || null); | |
| } | |
| } | |
| } else { | |
| models[name][relName](models[related]); | |
| } | |
| } | |
| } | |
| } | |
| if (orm.caller != orm.getInstance) { | |
| throw new Error('This object cannot be instantiated'); | |
| } | |
| }; | |
| orm.instance = null; | |
| orm.getInstance = function() { | |
| if (this.instance === null) { | |
| this.instance = new orm(); | |
| } | |
| return this.instance; | |
| }; | |
| module.exports = orm.getInstance(); |
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