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another proposal for instance methods and associations
// Note that instance and class methods could also be defined at the adapter level
// (e.g. CRUD adapters add .save() and .destroy() methods, but the Twillio API might add a .call() method)
// User.js
module.exports = sails.Model.extend({
// Adapters are applied from left to right
// (methods defined in more than one adapter use the rightmost adapter's version, just like _.extend)
adapter: ['mysql', 'twilio'],
// Cache the results of the specified methods
// (just class/static methods in this example-- not sure the best way to do instance methods)
cache: {
findAll: {
adapter: 'memory',
ttl: 60 * 1000
},
// Cache adapters are applied left to right
// (cache for one hour in memory,
// then cache for the rest of the day in redis)
findSingles: [{
adapter: 'memory',
ttl: 60 * 60 * 1000
}, {
adapter: 'redis',
ttl: 24 * 60 * 60 * 1000
}]
},
attributes: {
age: 'int',
female: 'boolean',
name: 'string',
phoneNumber: 'string',
friends: { many: 'User' },
boyfriend: { one: 'User' },
// Instance method to start dating this person
// (all partners are boyfriends in this app, I guess)
goSteady: function (user, cb) {
user.boyfriend = this;
this.boyfriend = user;
async.parallel(this.save, user.save, cb);
},
// Instance method to initiate a phone call using the Twilio API
// with some special parameters
dirtyCall: function (options, cb) {
// call() is an instance method which
// comes from the Twillio adapter
this.call({
to: options.to,
from: this.phoneNumber,
anonymous: true,
deepSexyVoice: true
}, cb);
}
},
// Class method to find users who are single, along with a list of their single friends
findSingles: function (cb) {
User.findAll({ boyfriend: null })
.andFetch('friends', {
where: { boyfriend: null }
})
.done(cb);
}
});
// Examples
// Class methods:
// Find singles
User.findSingles()
.done(function (err, singles) {
if (err) throw err;
sails.log('Take your pick:', singles);
});
// Associations:
// Get user 7, fetching no more than 3 of her friends
// who are at least 17 years old
User.find(7)
.andFetch('friends', {
where: { age: {'>=': 17}, female: true },
limit: 3
}).done(function (err, user) {
if (err) throw err;
sails.log('Take your pick:', user.friends);
});
// Cross-adapter assocations:
// Perform a dirty call from the current user to user 7
User.find(7).done(function (err, targetUser) {
if (err) throw err;
if (!req.session.userId) throw 'Account not valid- could not place call.';
// Lookup current user's phone no.
User.find(req.session.userId).done(function (err, currentUser) {
if (err) throw err;
if (!currentUser) throw 'Account not valid- could not place call.';
// Perform call
currentUser.dirtyCall({
to: targetUser.phoneNumber
}), function (err) {
if (err) throw err;
sails.log('Now what?');
});
});
});
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