CODEWITHSUNDEEP
backbone.jscoffeescript
ValeriiVasin
ValeriiVasin

Reputation: 8706

How can I access to some model in Backbone collection

I have a collection of models:

city = new M.City
App.citiesList = new C.CitiesList model: city
App.citiesList.fetch()

How can I access to the model with id=15 for example?

I need something like App.citiesList.find(15).name(), where name() is model function

When I try to add function find to the collection it is incorrect.
When I try to iterate over App.citiesList.models - I see only one model or what it is.. I actually don't know.

Thanks a lot!

Upvotes: 0

Views: 794

Answers (1)

mu is too short
mu is too short

Reputation: 434615

If App.citiesList is a Backbone collection then you'd want to use get:

get collection.get(id)
Get a model from a collection, specified by id.

So this would get you your model from the collection:

fifteen = App.citiesList.get 15

And if you wanted to call a method on it:

App.citiesList.get(15).name()

You'd probably want to make sure you got something back from App.citiesList.get 15 first though (unless you knew it was there of course). Since you're working in CoffeeScript you could use the existence operator like this:

name = App.citiesList.get(15)?.name()
#----------------------------^

to get 15's name or undefined in the name variable.

The find method on App.citiesList would be Underscore's find and that doesn't find an object with a particular ID.

Upvotes: 3

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