过滤一个骨干集合返回模型的数组 [英] Filtering a Backbone Collection returns an array of Models

问题描述

样code：

this.books = this.getBooksFromDatabase();
this.publishedBooks = this.books.filter(function(book) {
  return book.get("isPublished") === "1";
});

下面就在于这个问题：

this.books.filter，返回模型的阵列。我已经试过包装的阵列，因为这样：

this.books.filter, returns an array of the models. I've tried wrapping the array, as such:

var publishedBooks = _( this.books.filter(function(book) {
  return book.get("isPublished") === "1";
}))

所推荐的这篇文章：
<一href=\"https://github.com/documentcloud/backbone/issues/120\">https://github.com/documentcloud/backbone/issues/120

但我仍然无法运行之类的东西：
publishedBooks.each（...），或
publishedBooks.get（...）

But i still can't run things like: publishedBooks.each(...), or publishedBooks.get(...)

我在想什么？有没有一种方法，以返回数组转换成集合？

What am I missing? Is there a way to convert the returned array into a collection?

推荐答案

您既可以实例化一个新的骨干收集和传递数组中为止。

You could either instantiate a new backbone collection and pass in the array.

var myPublishedBooks = new MyBooksCollection(publishedBooks);

或者你可以刷新你的原始集合。

Or you could refresh your original collection.

this.books.refresh(publishedBooks)

---

注意的 0.5.0版本于2011年7月更名为的刷新到重置，这样你就可以在主干的较新版本实现这一点;

---

Note that the 0.5.0 release in July 2011 renamed refresh to reset, so you can achieve this in newer versions of Backbone with;

this.books.reset(publishedBooks)

这篇关于过滤一个骨干集合返回模型的数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！