That works ... thanks Rob!
On Thursday, March 20, 2014 5:48:19 PM UTC-4, Rob Dodson wrote:
>
> propertyChanged handlers will still work:
>
> <polymer-element name="greeting-tag" attributes="salutations">
> <template>
> <ul>
> <template id="greeting" repeat="{{s in salutations}}">
> <li>{{s.what}}: <input type="text" value="{{s.who}}"></li>
> </template>
> </ul>
> </template>
> <script>
> Polymer('greeting-tag', {
> created: function() {
> this.salutations = [];
> },
> salutationsChanged: function(oldVal, newVal) {
> console.log(newVal); // shows 2 objects
> }
> });
> </script>
> </polymer-element>
>
>
> Example: http://jsbin.com/noxij/21/edit
>
> On Thursday, March 20, 2014 2:38:02 PM UTC-7, [email protected] wrote:
>>
>> Thanks Rob ... that works
>>
>> A follow up question ... how do I add property change notification on
>> salutations in this instance?
>>
>> I know that for simple properties, I can do a propertyChanged event
>>
>> How does that work for objects/array of objects?
>>
>> much appreciated.
>>
>>
>> On Thursday, March 20, 2014 5:04:36 PM UTC-4, Rob Dodson wrote:
>>>
>>> Hey Mike,
>>>
>>> This one was actually a little tricky :)
>>>
>>> So you *can* pass in an Array of values but there are two gotchas:
>>>
>>> 1. You've got to do it using the created callback, not ready
>>> 2. You've got to use valid JSON style quotes for your keys and values.
>>>
>>> Here's a solution for you:
>>>
>>> <polymer-element name="greeting-tag" attributes="salutations">
>>> <template>
>>> <ul>
>>> <template id="greeting" repeat="{{s in salutations}}">
>>> <li>{{s.what}}: <input type="text" value="{{s.who}}"></li>
>>> </template>
>>> </ul>
>>> </template>
>>> <script>
>>> Polymer('greeting-tag', {
>>> created: function() {
>>> this.salutations = [];
>>> }
>>> });
>>> </script>
>>> </polymer-element>
>>>
>>> <!-- Note, you've got to use valid JSON style for the quotes -->
>>> <greeting-tag salutations='[{"what": "Sup", "who": "Dude"}, {"what":
>>> "Hi", "who": "Rob"}]'>
>>> </greeting-tag>
>>>
>>> Example jsbin: http://jsbin.com/noxij/17/edit
>>>
>>>
>>> On Thu, Mar 20, 2014 at 11:09 AM, <[email protected]> wrote:
>>>
>>>> In the example below, how do I expose a property/attribute that takes
>>>> salutations as an object (array in this case)? Basically I want to be able
>>>> to get/set saluations on the element from the host page?
>>>>
>>>> <polymer-element name="greeting-tag">
>>>> <template>
>>>> <ul>
>>>> <template id="greeting" repeat="{{s in salutations}}">
>>>> <li>{{s.what}}: <input type="text" value="{{s.who}}"></li>
>>>> </template>
>>>> </ul>
>>>> </template>
>>>> <script>
>>>> Polymer('greeting-tag', {
>>>> ready: function() {
>>>> this.salutations = [
>>>> {what: 'Hello', who: 'World'},
>>>> {what: 'GoodBye', who: 'DOM APIs'},
>>>> {what: 'Hello', who: 'Declarative'},
>>>> {what: 'GoodBye', who: 'Imperative'}
>>>> ];
>>>> }
>>>> });
>>>> </script></polymer-element>
>>>>
>>>> Follow Polymer on Google+: plus.google.com/107187849809354688692
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>>>> .
>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>
>>>
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