Backbone.js: Hacker's Guide Part 2 (Backbone.Collection) (opens in new tab)

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66 pointsraja13y ago8 comments

8 comments

8 comments · 4 top-level

brlewis13y ago· 2 in thread

For relational data, would a Model represent a row and a Collection represent a result set? I usually think of an MVC app as having a single model representing a schema. It sounds like Backbone is different.

jashkenas13y ago

Yep -- the key bit here is that on the server you have access to the entire table of rows, so it makes some sense to conflate the, say, Book class with the entire set of all possible books.

On the client side, you very rarely have access to the entire table -- often you have different slices of it based on different search queries, or associations -- every Book has its own collection of Notes, for example. So just mimicking the Rails-style 1:1 mapping can be a bit of a fallacy.

jwoah1213y ago

Exactly. Your server could query the DB for a bunch of rows from a User table and send the data to your client. On your client you'd have a User model, and a UserCollection that contains many Users.

MatthewPhillips13y ago· 2 in thread

Can the JavaScript elite please get together and make a decision on Backbone.Events vs. EventEmitter vs. EventTarget?

Also, I recommend everyone read TJ Holowaychuck's latest blog post[1] and lets start distributing these types of things as components instead of "frameworks".

[1]http://tjholowaychuk.com/post/27984551477/components

lobo_tuerto13y ago

What is the decision to be made? could you explain a little?

MatthewPhillips13y ago

These are 3 implementations of the same thing. I can imagine there are people using Backbone, YUI, and EventEmitter. Oh, and they might be using some other library which shims the EventTarget interface and uses CustomEvent objects.

Read the Holowaychuk article. We need to stop working with frameworks and start working with components. How great would it be of I could use Backbone without Events (not picking on Backbone.Events here, just an example), or use a JQuery function that one of my libraries requires without including all 32k of it.

sroussey13y ago

Also, for those debugging, see:

https://twitter.com/illuminations4d/status/22728017176024268...

blktiger13y ago

That void 0 trick was new to me.

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