CODEWITHSUNDEEP
dojo
Neel Basu
Neel Basu

Reputation: 12904

dojo Widget Id Conflict

I write ctor's of My dojo Widgets like this.

    constructor: function(params){
        var r = this.inherited(arguments);
        this.params = params;
        //other ctor works
        return r;
    }

I instanciate the widget with JSON response as ctor argument. like new MyWidget(res)
and the JSON response contains an id attribute like {id: 5, text: 'Hallo'}

Now _WidgetBase constructor treats this id as Widget Id and throws Tried to register widget with id==6 but that id is already registered. cause there may be some other widget that is also getting id: 6 for another subject.

and I cannot change the JSON response to output like subject_id as it will need changing a lot of things.

and I need to get that id after widget instantiation.

So What would be a good design to handle this problem ?

Upvotes: 0

Views: 621

Answers (2)

PEM
PEM

Reputation: 1978

Do you actually need to map the json properties to your widget directly ? If not, then just have a json property in your widget, and when instantiating : new myWidget({jsonObj:res}); then you could have a getJsonId() function that would return this.jsonObj.id;

Upvotes: 0

phusick
phusick

Reputation: 7352

Interesting question! Here is my solution: http://jsfiddle.net/phusick/z9u8a/

var Widget = declare(_WidgetBase, {

    postscript: function() {
        var id = arguments[0]["id"];
        delete arguments[0]["id"];
        this.inherited(arguments);
        this.params.id = id;
    },

    constructor: function(params) {                      
        // your constructor here
    }            

});

var widget1 = new Widget({ id: 1, text: 'Hallo 1'});
var widget2 = new Widget({ id: 1, text: 'Hallo 2'});

EDIT: I did some clean up, so all you need is to add postscript method.

Upvotes: 1

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