Rally - Error - hydrateModel is not a function? - rally

Question

Question : I am new to Rally APP development, trying to build a simple application with a Release dropdown , when selected populates the grid.
However when I select the value, I am getting the following error Based upon this error
1. What does this mean ? - Uncaught TypeError: this.store.hydrateModel is not a function at constructor.initComponent" , and how to resolve this ?
====================================================================
App.js?_dc=0.59785698231437:43 Data: [constructor]
08:43:48.080 sdk-debug.js:185210 Uncaught TypeError: this.store.hydrateModel is not a function
at constructor.initComponent (sdk-debug.js:185210)
at constructor (sdk-debug.js:30211)
at constructor.callParent (sdk-debug.js:4469)
at constructor [as _componentConstructor] (sdk-debug.js:34291)
at constructor.callParent (sdk-debug.js:4469)
at constructor (sdk-debug.js:144823)
at constructor.callParent (sdk-debug.js:4469)
at constructor (sdk-debug.js:185132)
at new constructor (sdk-debug.js:5100)
at eval (eval at getInstantiator (sdk-debug.js:5720), <anonymous>:3:8)
initComponent # sdk-debug.js:185210
constructor # sdk-debug.js:30211
callParent # sdk-debug.js:4469
constructor # sdk-debug.js:34291
callParent # sdk-debug.js:4469
constructor # sdk-debug.js:144823
callParent # sdk-debug.js:4469
constructor # sdk-debug.js:185132
constructor # sdk-debug.js:5100
(anonymous) # VM20:3
instantiate # sdk-debug.js:5692
(anonymous) # sdk-debug.js:2303
_loadData # App.js?_dc=0.59785698231437:45
fire # sdk-debug.js:10046
continueFireEvent # sdk-debug.js:11447
fireEventArgs # sdk-debug.js:11425
prototype.fireEventArgs # sdk-debug.js:42297
object.(anonymous function) # sdk-debug.js:195692
fireEvent # sdk-debug.js:11411
onListSelectionChange # sdk-debug.js:149617
object.(anonymous function) # sdk-debug.js:195692
fire # sdk-debug.js:10046
continueFireEvent # sdk-debug.js:11447
fireEventArgs # sdk-debug.js:11425
fireEvent # sdk-debug.js:11411
maybeFireSelectionChange # sdk-debug.js:95171
doSingleSelect # sdk-debug.js:95145
doSelect # sdk-debug.js:94983
selectWithEvent # sdk-debug.js:94717
onItemClick # sdk-debug.js:95543
fire # sdk-debug.js:10046
continueFireEvent # sdk-debug.js:11447
fireEventArgs # sdk-debug.js:11425
prototype.fireEventArgs # sdk-debug.js:42297
fireEvent # sdk-debug.js:11411
processUIEvent # sdk-debug.js:96924
handleEvent # sdk-debug.js:96850
(anonymous) # VM60:7
wrap # sdk-debug.js:10800
==========================================================================
Code Below
enter code here
Ext.define('CustomApp', {
extend: 'Rally.app.App',
componentCls: 'app',
//specify the layout over here
defaults: { margin:10 },
// layout: 'border',
items: [
{ xtype:'container', itemId:'drop-downContainer',layout:'hbox' },
{ xtype:'container', itemId:'gridContainer',layout:'hbox' }
],
//var userStories: undefined;
launch: function() {
enter code here console.log('Entering the launch function');
this._loadUserStores();
},
_loadUserStores: function()
{ console.log("Entering the Load User Stories...");
var releaseComboBox = Ext.create('Rally.ui.combobox.ReleaseComboBox',{
itemId: 'releaseDropDown',
listeners: {
load: function(data,records,success){
console.log("Load is complete");
},
select: this._loadData,
scope: this
}
});
this.down('#drop-downContainer').add(releaseComboBox);
},
_loadData: function(myStore,data,success)
{ console.log("Entering the onLoad Data...");
console.log("Store --",myStore);
console.log("Data: ",data);
var datagrid= Ext.create('Rally.ui.grid.Grid',{
store: myStore,
columnCfgs: ['Name', 'ReleaseStartDate"', 'ReleaseDate', 'ObjectID', 'State', 'PlannedVelocity']
});
console.log("DataGrid is complete...");
//this.down('#gridContainer').add(datagrid);
}
});

Answer 1

The problem you're running into is myStore is not a store- it's the release combo box.
I'd check out the easy button for scoping apps to timeboxes: https://help.rallydev.com/apps/2.1/doc/#!/guide/timebox_filtering
And here's another example showing how to load/update a grid based on a combobox filter:
https://help.rallydev.com/apps/2.1/doc/#!/example/filterable-grid