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referencing objects with a lot of fields
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Tamas Herman  
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 More options Mar 26 2012, 3:36 am
From: Tamas Herman <hermanta...@gmail.com>
Date: Mon, 26 Mar 2012 15:36:54 +0800
Local: Mon, Mar 26 2012 3:36 am
Subject: referencing objects with a lot of fields
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guys,  

im trying to display an object with 10-20 attributes.
some of the values of these attributes are also similarly big objects or arrays of such objects.

i would like to omit prefixing each field name with the sub-object's name.
similarly as knockoutjs does in their example on the homepage:

<p data-bind="with: chosenTicket">
  xxx <b data-bind="text: name"></b>
…

pascal had a similar construct which was also called "with"

so how can i achieve something like this in angular:

$scope.obj = {
  f1: 123123
  f2: "asdasd"
  …
  f13: {
    sub1: true
    sub2: 555
    …
    sub20: null
  }
  f18: [ {...}, {…}, ... ]

}

<p with="obj">
  <h3>{{f1}}</h3>
  <p>{{f2}}<p>
  ...
  <div with="f13">
    Done: {{sub1}}
    Size: {{sub2}}
    …
    <span ng-show="sub20">OK</span>
  </div>
  ...
</p>

instead of the current

<p>
  <h3>{{obj.f1}}</h3>
  <p>{{obj.f2}}<p>
  ...
  <div with="obj.f13">
    Done: {{obj.f13.sub1}}
    Size: {{obj.f13.sub2}}
    …
    <span ng-show="obj.f13.sub20">OK</span>
  </div>
  ...
</p>

i was trying to hack it like this:

<script type="text/ng-template" id="/embedded.html">
  <div>
    Done: {{sub1}}
    Size: {{sub2}}
    …
    <span ng-show="sub20">OK</span>
  </div>

</script>

<div ng-inculde src="'/embedded.html'" scope="extend($new, obj.f13)"></div>

but it didnt do anything.
didn't throw any error either which made me feel good about it actually :)

i have the impression that i really read the full docs…
would these sections make me understand whats going on?
http://docs-next.angularjs.org/api/angular.module.ng.$rootScope.Scope
http://docs-next.angularjs.org/api/angular.module.ng.$compileProvider...

is it silly for some reason what i want?
pls, help.

--  
  tom


 
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Peter Bacon Darwin  
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 More options Mar 26 2012, 4:14 am
From: Peter Bacon Darwin <p...@bacondarwin.com>
Date: Mon, 26 Mar 2012 09:14:06 +0100
Local: Mon, Mar 26 2012 4:14 am
Subject: Re: [angular.js] referencing objects with a lot of fields
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Hi Tamas
You can get this effect by extending the scope inside a controller.  For
each new controller a new scope is created that exists only where that
controller exists so you are free to hack it to bits as long as you are
sure that is what you want to do.
See this fiddle: http://jsfiddle.net/86kuc/
Pete

On 26 March 2012 08:36, Tamas Herman <hermanta...@gmail.com> wrote:


 
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Vojta Jína  
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 More options Mar 27 2012, 12:47 am
From: Vojta Jína <vojta.j...@gmail.com>
Date: Mon, 26 Mar 2012 21:47:08 -0700
Local: Tues, Mar 27 2012 12:47 am
Subject: Re: [angular.js] referencing objects with a lot of fields
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Pete, thank you so much for answering all the questions here on mailing list.
We really appreciate it.

Would you like to have an AngularJS t-shirt ?
Fill in this form
https://docs.google.com/spreadsheet/viewform?formkey=dGlWVFNocm9hWFF0...
and we will send you some...

V.

On Mon, Mar 26, 2012 at 1:14 AM, Peter Bacon Darwin


 
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Suller Andras  
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 More options Mar 27 2012, 4:03 am
From: Suller Andras <suller.and...@gmail.com>
Date: Tue, 27 Mar 2012 15:03:38 +0700
Local: Tues, Mar 27 2012 4:03 am
Subject: Re: [angular.js] referencing objects with a lot of fields
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On Mon, Mar 26, 2012 at 3:14 PM, Peter Bacon Darwin

<p...@bacondarwin.com> wrote:
> Hi Tamas
> You can get this effect by extending the scope inside a controller.  For
> each new controller a new scope is created that exists only where that
> controller exists so you are free to hack it to bits as long as you are sure
> that is what you want to do.
> See this fiddle: http://jsfiddle.net/86kuc/
> Pete

Interesting approach. But (of course) it breaks the 2way databinding,
since the attributes will be copied to the new scope. Is there any
chance to achieve the same effect without making new copies of the
data?
Or try to keep the two copies in sync with a $watch for every
attribute? It sounds too hackish.

Andras


 
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Peter Bacon Darwin  
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 More options Mar 27 2012, 4:36 am
From: Peter Bacon Darwin <p...@bacondarwin.com>
Date: Tue, 27 Mar 2012 09:36:11 +0100
Local: Tues, Mar 27 2012 4:36 am
Subject: Re: [angular.js] referencing objects with a lot of fields
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Copies are only made of primitive types.  If you are willing to accept one
level of indirection then you get references to objects.
See this version: http://jsfiddle.net/86kuc/1/
Pete

On 27 March 2012 09:03, Suller Andras <suller.and...@gmail.com> wrote:


 
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Peter Bacon Darwin  
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 More options Mar 27 2012, 4:36 am
From: Peter Bacon Darwin <p...@bacondarwin.com>
Date: Tue, 27 Mar 2012 09:36:40 +0100
Local: Tues, Mar 27 2012 4:36 am
Subject: Re: [angular.js] referencing objects with a lot of fields
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Awesome and wholly undeserved - but I'll take one anyway!
Thanks
Pete

On 27 March 2012 05:47, Vojta Jína <vojta.j...@gmail.com> wrote:


 
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Igor Minar  
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 More options Mar 29 2012, 2:43 am
From: Igor Minar <i...@angularjs.org>
Date: Wed, 28 Mar 2012 23:43:26 -0700
Local: Thurs, Mar 29 2012 2:43 am
Subject: Re: [angular.js] referencing objects with a lot of fields
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On Tue, Mar 27, 2012 at 1:03 AM, Suller Andras <suller.and...@gmail.com>wrote:

There isn't another way.

> Or try to keep the two copies in sync with a $watch for every
> attribute? It sounds too hackish.

I wouldn't recommend that.

What's your objective? Saving key strokes or something else?

I'm all for saving key strokes but in this case, it would add yet another
scoping dimension to the templating syntax which might make it hard to
follow.

/i


 
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