Neurosync —— JavaScript 本地離線 ORM 庫
來自： http://www.oschina.net/p/neurosync?fromerr=YrimlQXj
Neurosync 是一個 JavaScript ORM 庫，支持離線和實時操作。沒錯，是 ORM，但并沒有瘋狂到直接連接到后臺數據庫。對 Neurosync 來說，數據庫就是后端的 REST API，而 Neurosync 就是這個 API 的一個門面。
Neurosync 的生命周期非常簡單：
-
保存數據變更到本地存儲
-
發起 REST 請求
-
如果請求成功則刪除本地存儲中的變更數據，標識為已保存，并發布到實時 API
-
如果請求失敗，因為應用本身是離線的，將等待應用在線并繼續處理數據更改流程
-
如果有待決的操作但是應用重啟了，數據將會被恢復
一個簡單的 TODO 應用示例代碼：
var Todo = Neuro({
name: 'todo',
api: '/api/1.0/todo/',
fields: ['name', 'finished_at'],
timestamps: true,
comparator: ['-finished_at', '-created_at'], // finished go to bottom, most recently created are at the top
methods: {
finish: function(finished) {
this.$save('finished_at', finished ? Date.now() null);
}
},
dynamic: {
done: function() {
return !this.finished_at;
}
}
});
var t0 = Todo.create({name: 'Download Neurosync'});
t0.$isSaved(); // true
t0.finish( true );
t0.done; // true
t0.$remove();
var t1 = new Todo({name: 'Use Neurosync'});
t1.$isSaved(); // false
t1.id; // UUID
t1.$save();
var t2 = Todo.boot({id: 34, name: 'Profit'}); // Todo data that already exists remotely
t2.$isSaved(); // true
t2.name = '???';
t2.$hasChanges(); // true
var t3 = Todo.fetch(45); // REST call if doesn't exist locally
Todo.all(); // [t1, t2, t3]
Todo.collect(t1, t2); // creates a collection of todos
var allRemote = Todo.fetchAll(function(all) {}); // call REST API
var f0 = Todo.find('name', 'Download Neurosync'); // first match
var f1 = Todo.find({done: true});
var w0 = Todo.where('done', true); // all done todos
var w1 = Todo.where({finished_at: null});
var g0 = Todo.get(34); // get cached version
var g1 = Todo.grab(34); // get cached version, otherwise call REST API
var a0 = Todo.grabAll(function(all) {}); // get all cached, if none cached call REST API
Todo.ready(function() {}); // when it has been initialized locally and/or remotely (depends on options).
Todo.refresh(); // re-fetch from REST API
var search0 = Todo.search({done: true}); // sends a search to the REST API (POST by default)
var searchPaged0 = Todo.searchPaged({done: true, page_offset: 0, page_size: 20});
searchPaged0.$next();</pre> </div>