loopback/lib/models/model.js

116 lines
2.5 KiB
JavaScript

/**
* Module Dependencies.
*/
var ModelBuilder = require('loopback-data').ModelBuilder;
var modeler = new ModelBuilder();
/**
* Define the built in loopback.Model.
*/
var Model = module.exports = modeler.define('model');
Model.shared = true;
/*!
* Called when a model is extended.
*/
Model.setup = function () {
var ModelCtor = this;
// each model has its
// own access control
// list
ModelCtor.acl = [];
ModelCtor.sharedCtor = function (data, id, fn) {
if(typeof data === 'function') {
fn = data;
data = null;
id = null;
} else if (typeof id === 'function') {
fn = id;
if(typeof data !== 'object') {
id = data;
data = null;
} else {
id = null;
}
}
if(id && data) {
var model = new ModelCtor(data);
model.id = id;
fn(null, model);
} else if(data) {
fn(null, new ModelCtor(data));
} else if(id) {
ModelCtor.find(id, function (err, model) {
if(err) {
fn(err);
} else if(model) {
fn(null, model);
} else {
err = new Error('could not find a model with id ' + id);
err.statusCode = 404;
fn(err);
}
});
} else {
fn(new Error('must specify an id or data'));
}
}
// before remote hook
ModelCtor.beforeRemote = function (name, fn) {
var self = this;
if(this.app) {
var remotes = this.app.remotes();
remotes.before(self.pluralModelName + '.' + name, function (ctx, next) {
fn(ctx, ctx.result, next);
});
} else {
var args = arguments;
this.once('attached', function () {
self.beforeRemote.apply(self, args);
});
}
}
// after remote hook
ModelCtor.afterRemote = function (name, fn) {
var self = this;
if(this.app) {
var remotes = this.app.remotes();
remotes.after(self.pluralModelName + '.' + name, function (ctx, next) {
fn(ctx, ctx.result, next);
});
} else {
var args = arguments;
this.once('attached', function () {
self.afterRemote.apply(self, args);
});
}
}
ModelCtor.sharedCtor.accepts = [
{arg: 'data', type: 'object', http: {source: 'body'}},
{arg: 'id', type: 'any', http: {source: 'url'}}
];
ModelCtor.sharedCtor.http = [
{path: '/'},
{path: '/:id'}
];
ModelCtor.sharedCtor.returns = {root: true};
return ModelCtor;
}
// setup the initial model
Model.setup();