<!-- with: what_the_hell_can_be_used_here -->

[hipertracker]

That lack of API is annoying. What argument can be passed to with: command? I cannot pass <!-- with: grouped.category_1 -->. Do I have to use only ugly <!-- ko with: grouped --><!-- ko with: category_1 --> ... grouped.category_1 is also a object, why I cannot use it? 

--

JZ

[Michael Latta]

In your first example you do not have the "ko" in the begining of the comment.  That would prevent it from working.  If you want to do with a sub item you need to use the following: <!-- ko with: grouped().category_1 -->

Michael

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[Denys Khanzhiyev]

But that way if you have grouped()==null or undefined - you are in trouble.

2013/3/12 Michael Latta <mla...@technomage.com>

[Michael Latta]

Correct.  Knockout is not magic.  If grouped can be null then you need to have nested withs to account for that or use a computed observable that will account for it.

You could add a computed observable on the enclosing model like so:

self.grouped_category_1 = ko.computed(function() {

if (self.grouped() != null) {

return self.grouped().category_1();

}

return null;

}

(Coded off the top of my head so excuse any typeos)

Then you would only need one with binding.

Michael