extjs - Rally Ext JS change functionalty of existing component -

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i trying either override or extend existing component - rally.ui.percentdone component. want provide portfolio item data necessary render using same color coding rally native apps use (the rally health color calculator).

i need function pass correct record. here idea far:

ext.define('custom.percentdone', {     requires: ['rally.ui.renderer.template.progressbar.portfolioitempercentdonetemplate', 'rally.util.healthcolorcalculator'],     extend  : 'rally.ui.percentdone',     alias   : 'widget.cpercentdone',       config: {         record: null     },      constructor: function(config) {         config = this.config;         this.rendertpl = ext.create('custom.renderer.template.progressbar.percentdonetemplate', {             calculatecolorfn: ext.bind(function(recorddata) {                 console.log('called custom coloring fn');                 var colorobject = rally.util.healthcolorcalculator.calculatehealthcolorforportfolioitemdata(config.record, config.percentdonename);                 return colorobject.hex;             }, this)         });         this.renderdata = config;         this.mergeconfig(config);         this.callparent([this.config]);     } });  var custom = ext.create('custom.percentdone', {     record: item,     percentdonename: 'percentdonebystoryplanestimate', });

but calculate color function not being called instead of default.

i got work overriding:

            var percentdonebystorycountel = ext.create("rally.ui.percentdone", {                 record: item,                 percentdonename: "percentdonebystorycount",                 percentdone: item.percentdonebystorycount             });             tpl = percentdonebystorycountel.rendertpl;             tpl.calculatecolorfn = function (recorddata) {                 var colorobject = rally.util.healthcolorcalculator.calculatehealthcolorforportfolioitemdata(item, "percentdonebystorycount");                 return colorobject.hex;             };              ext.override(percentdonebystorycountel, {                 rendertpl: tpl             });

but figure out how via extending component instead.

thanks help.


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