how to set variable value from the server response extjs 4 - extjs4

Question

forum member I am having one problem in setting the value of my view from the server response I am receiving
I am using the MVC architechture of the extjs 4. My store is loaded perfectly and my taskstore is defined as below
Ext.define('gantt.store.taskStore', {
extend: 'Gnt.data.TaskStore',
model: 'gantt.model.ResourceTask',
storeId: 'taskStore',
autoLoad : true,
autoSync : true,
proxy : {
type : 'ajax',
api: {
read: 'task/GetTask.action',
create: 'task/CreateTask.action',
destroy: 'task/DeleteTask.action',
update: 'task/UpdateTask.action'
},
writer : new Ext.data.JsonWriter({
//type : 'json',
root : 'taskdata',
encode : true,
writeAllFields : true
}),
reader : new Ext.data.JsonReader({
totalPropery: 'total',
successProperty : 'success',
idProperty : 'id',
type : 'json',
root: function (o) {
if (o.taskdata) {
return o.taskdata;
} else {
return o.children;
}
}
})
}
});
but what I want to do is that as soon as the store loaded I want to assign the server response data to one of the variable in my javascript.
I tried to add the value from the beforeload function of view, but not able to do so.
my view code is given as below
var result = Ext.JSON.decode('{"calendardata": [{"startdate": 1330281000000,"enddate": 1330284600000,"id": 3,"title": "mon"}],"total": 1,"success": true}');
//var start = new Date(2012, 2, 26),
//end = Sch.util.Date.add(start, Sch.util.Date.MONTH, 30);
var start_d = new Date(result.calendardata[0].startdate);
var end_d = new Date(result.calendardata[0].enddate);
var start = new Date(start_d.getFullYear(), start_d.getMonth(), start_d.getDate());
end = Sch.util.Date.add(start, Sch.util.Date.MONTH, 30);
console.log("YEAR ::"+start.getFullYear()+"MONTH ::"+start.getMonth()+"DAY ::"+start.getDate());
console.log("YEAR ::"+end.getFullYear()+"MONTH ::"+end.getMonth()+"DAY ::"+end.getDate());
//create the downloadframe at the init of your app
this.downloadFrame = Ext.getBody().createChild({
tag: 'iframe'
, cls: 'x-hidden'
, id: 'iframe'
, name: 'iframe'
});
//create the downloadform at the init of your app
this.downloadForm = Ext.getBody().createChild({
tag: 'form'
, cls: 'x-hidden'
, id: 'form'
, target: 'iframe'
});
var printableMilestoneTpl = new Gnt.template.Milestone({
prefix : 'foo',
printable : true,
imgSrc : 'resources/images/milestone.png'
});
var params = new Object();
Ext.define('gantt.view.projectmgt.projectGanttpanel', {
extend: "Gnt.panel.Gantt",
id: 'projectganttpanel',
alias: 'widget.projectganttpanel',
requires: [
'Gnt.plugin.TaskContextMenu',
'Gnt.column.StartDate',
'Gnt.column.EndDate',
'Gnt.column.Duration',
'Gnt.column.PercentDone',
'Gnt.column.ResourceAssignment',
'Sch.plugin.TreeCellEditing',
'Sch.plugin.Pan',
'gantt.store.taskStore',
'gantt.store.dependencyStore'
],
leftLabelField: 'Name',
loadMask: true,
//width: '100%',
// height: '98%',
startDate: start,
endDate: end,
multiSelect: true,
cascadeChanges: true,
viewPreset: 'weekAndDayLetter',
recalculateParents: false,
showTodayLine : true,
showBaseline : true,
initComponent: function() {
var me = this;
me.on({
scope: me,
beforeload: function(store,records,options) {
console.log('BEFORE LOAD YAAR panel'+records.params);
if(records.params['id'] != null)
{
return true;
}
else
{
return false;
}
}
});
TaskPriority = {
Low : 0,
Normal : 1,
High : 2
};
var taskStore = Ext.create('gantt.store.taskStore');
var dependencyStore = Ext.create('gantt.store.dependencyStore');
Ext.apply(me, {
taskStore: taskStore,
dependencyStore: dependencyStore,
// Add some extra functionality
plugins : [
Ext.create("Gnt.plugin.TaskContextMenu"),
Ext.create('Sch.plugin.TreeCellEditing', {
clicksToEdit: 1
}),
Ext.create('Gnt.plugin.Printable', {
printRenderer : function(task, tplData) {
if (task.isMilestone()) {
return;
} else if (task.isLeaf()) {
var availableWidth = tplData.width - 4,
progressWidth = Math.floor(availableWidth*task.get('PercentDone')/100);
return {
// Style borders to act as background/progressbar
progressBarStyle : Ext.String.format('width:{2}px;border-left:{0}px solid #7971E2;border-right:{1}px solid #E5ECF5;', progressWidth, availableWidth - progressWidth, availableWidth)
};
} else {
var availableWidth = tplData.width - 2,
progressWidth = Math.floor(availableWidth*task.get('PercentDone')/100);
return {
// Style borders to act as background/progressbar
progressBarStyle : Ext.String.format('width:{2}px;border-left:{0}px solid #FFF3A5;border-right:{1}px solid #FFBC00;', progressWidth, availableWidth - progressWidth, availableWidth)
};
}
},
beforePrint : function(sched) {
var v = sched.getSchedulingView();
this.oldRenderer = v.eventRenderer;
this.oldMilestoneTemplate = v.milestoneTemplate;
v.milestoneTemplate = printableMilestoneTpl;
v.eventRenderer = this.printRenderer;
},
afterPrint : function(sched) {
var v = sched.getSchedulingView();
v.eventRenderer = this.oldRenderer;
v.milestoneTemplate = this.oldMilestoneTemplate;
}
})
],
eventRenderer: function (task) {
var prioCls;
switch (task.get('Priority')) {
case TaskPriority.Low:
prioCls = 'sch-gantt-prio-low';
break;
case TaskPriority.Normal:
prioCls = 'sch-gantt-prio-normal';
break;
case TaskPriority.High:
prioCls = 'sch-gantt-prio-high';
break;
}
return {
cls: prioCls
};
},
// Setup your static columns
columns: [
{
xtype : 'treecolumn',
header: 'Tasks',
dataIndex: 'Name',
width: 150,
field: new Ext.form.TextField()
},
new Gnt.column.StartDate(),
new Gnt.column.Duration(),
new Gnt.column.PercentDone(),
{
header: 'Priority',
width: 50,
dataIndex: 'Priority',
renderer: function (v, m, r) {
switch (v) {
case TaskPriority.Low:
return 'Low';
case TaskPriority.Normal:
return 'Normal';
case TaskPriority.High:
return 'High';
}
}
},
{
xtype : 'booleancolumn',
width : 50,
header : 'Manual',
dataIndex : 'ManuallyScheduled',
field : {
xtype : 'combo',
store : [ 'true', 'false' ]
}
}
],
tooltipTpl: new Ext.XTemplate(
'<h4 class="tipHeader">{Name}</h4>',
'<table class="taskTip">',
'<tr><td>Start:</td> <td align="right">{[Ext.Date.format(values.StartDate, "y-m-d")]}</td></tr>',
'<tr><td>End:</td> <td align="right">{[Ext.Date.format(Ext.Date.add(values.EndDate, Ext.Date.MILLI, -1), "y-m-d")]}</td></tr>',
'<tr><td>Progress:</td><td align="right">{PercentDone}%</td></tr>',
'</table>'
).compile()
});
me.callParent(arguments);
}
});
the reason I am not able to set the value of variable I used to set it using static data. To set the static data I am using the below code
var result = Ext.JSON.decode('{"calendardata": [{"startdate": 1330281000000,"enddate": 1330284600000,"id": 3,"title": "mon"}],"total": 1,"success": true}');
var start_d = new Date(result.calendardata[0].startdate);
var end_d = new Date(result.calendardata[0].enddate);
var start = new Date(start_d.getFullYear(), start_d.getMonth(), start_d.getDate());
end = Sch.util.Date.add(start, Sch.util.Date.MONTH, 30);
but instead of this static data I want to set the start and end value as soon as the store loads and server response is received.
please suggest me some solution I can apply here.
I am receiving the jsondata as
{
"taskdata": [{
"startdate": 1330281000000,
"enddate": 1330284600000,
"id": 3,
"title": "mon"
}],
"total": 1,
"success": true
}
I am using extjs 4 with MVC architecture and JAVA as my server side technology.

Answer 1

First of all your question is kind of badly formulated. You have too much code and not really clear what are you trying to ask. In a future try to isolate a particular problem you're dealing with if you want to get quick and proper answer.
Second, load operation is asynchronous. You just specified store as 'autoLoad', but I don't see anywhere where you subscribe to its load event. Most likely your problem is trying to get something of the store while it's not yet loaded. Try to set autoLoad: false, load store manually and subscribe to its 'load' event to populate your view.