Hello Martin,
thank you for your welcome and answer! Your suggestion (I now use the store
without a controller) works perfect. I have another two questions:
> Is it possible to perform calculations of several store.model fields? For
> example to calculate "lastname + ' ' + firstname" via a converter:
{converter: function(data) { return ... any calculated value ...; }}
The data parameter contains the single value of the bound property.
> Are the properties which are bound via .bind("model.persons[0].firstname"
> accessible directly? Like "dtaStore.getModel().Persons[0].lastname" ?
Thanks!
Best regards,
Michael
Am 04.01.2010 14:41, schrieb MartinWittemann:
>
> Hello Michael and welcome to qooxoo,
>
> you are right with your guess that the mistake is in the last line of your
> code and that the bind method can not access the property. The reason is
> that the controller does not have such a property. The property is on the
> model. To get that working, you have two options:
>
> 1. Without the controller
> dtaStore.bind("model.persons[0].lastname", lblName, "value");
>
> 2. With the controller
> dtaController.addTarget(lblName, "value", "[0].lastname");
>
> Both ways work as expected. I would prefer the first option if its such a
> sing point connection.
> If you plan to use more of the data binding, perhaps the cheat sheet might
> help you:
> http://qooxdoo.org/documentation/1.0/data_binding#demos_api_and_cheatsheet
>
> Best,
> Martin
>
>
>
> Michael Schwarzl wrote:
>>
>> Hello,
>>
>> I'm new to qooxdoo. At first: this is an amazing framework!
>>
>> Now to my question: I try to bind a JSON data store (f.e. persons.json) to
>> some labels. According to the JsonToList example I created a Controller
>> and a Store and try to bind the data but I won't work:
>>
>> Here is my playground example:
>>
>> var doc = this.getRoot();
>>
>> var lblName = new qx.ui.basic.Label("test").set({rich: true});
>> doc.add(lblName, {left:10, top:10});
>>
>> var url =
>> "http://demo.qooxdoo.org/current/demobrowser/demo/data/json/persons.json";;
>> var dtaController = new qx.data.controller.Object();
>> var dtaStore = new qx.data.store.Json(url);
>> dtaStore.bind("model.persons", dtaController, "model");
>> dtaController.bind("persons[0].lastname", lblName, "value");
>>
>>
>>
>> It seems that the bind method cannot access the property
>> "persons[0].lastname".
>> How do I correctly bind data in my case?
>>
>> Thanks,
>> Michael
>>
>>
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