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Setting a Default Value to a ComboBox using Json in ExtJS 3.4

I am trying to set a default value in a ComboBox in ExtJS 3.4 I have tried to set value: 'Standard' in the ComboBox config, but that only places a string in the box. I did some digging around and tried to setup the afterrender function, but still haven't gotten it to populate. The goal is to get the box to actually select the value and populate the box with the Json data, so that the user is able to select from subsequent ComboBoxes.
var hatComboStore = new Ext.data.JsonStore({
autoLoad: true,
fields: [
'BIN_ID',
'BIN_DESC'
],
baseParams: {
method: 'post'
},
url: 'json_bin_hat.php'
});
var hatCombo = new Ext.form.ComboBox({
allowBlank: false,
autoSelect: true,
displayField: 'BIN_DESC',
emptyText: 'Select a hat...',
fieldLabel: 'Hat',
forceSelection: false,
hiddenName: 'hatId',
itemId: 'hatId',
listEmptyText: 'No records found',
listeners: {
afterrender: function(combo, record, index) {
var hat = combo.getValue();
binCombo.store.baseParams.hat = hat;
},
select: function(combo, record, index) {
var hat = combo.getValue();
binCombo.store.baseParams.hat = hat;
},
focus: function(combo) {
binCombo.clearValue();
}
},
mode: 'remote',
msgTarget: 'side',
name: 'hatDesc',
store: hatComboStore,
submitValue: true,
triggerAction: 'all',
valueField: 'BIN_ID'
});
Anyone have any ideas? Thanks for your help!

I've got it to work using an override method.
Basically, the displayValue is what I wanted to display ('Standard') and the value is what I wanted to execute (value: 1). Apparently, the remote store is a little tricky to work with, so that's why the override was necessary.
var hatComboStore = new Ext.data.JsonStore({
autoLoad: true,
fields: [
'BIN_ID',
'BIN_DESC'
],
baseParams: {
method: 'post'
},
url: 'json_bin_hat.php'
});
var hatCombo = new Ext.form.ComboBox({
allowBlank: false,
autoSelect: true,
displayField: 'BIN_DESC',
displayValue: 'Standard',
emptyText: 'Select a hat...',
fieldLabel: 'Hat',
forceSelection: false,
hiddenName: 'hatId',
itemId: 'hatId',
listEmptyText: 'No records found',
listeners: {
afterrender: function(combo, record, index) {
var hat = combo.getValue();
binCombo.store.baseParams.hat = hat;
},
select: function(combo, record, index) {
var hat = combo.getValue();
binCombo.store.baseParams.hat = hat;
},
focus: function(combo) {
binCombo.clearValue();
}
},
mode: 'remote',
msgTarget: 'side',
name: 'hatDesc',
store: hatComboStore,
submitValue: true,
triggerAction: 'all',
valueField: 'BIN_ID'
value: 1
});
//Override method to default hatCombo value to 'Standard' while underlying value = 1
Ext.override(Ext.form.ComboBox, {
initValue: Ext.form.ComboBox.prototype.initValue.createSequence(function() {
if (this.mode == 'remote' && !!this.valueField && this.valueField != this.displayField && this.displayValue) {
if (this.forceSelection) {
this.lastSelectionText = this.displayValue;
}
this.setRawValue(this.displayValue);
}
})
});

Looks like the value prop is not working for remote stores. Probably the combo is rendered before the store has loaded. You can set the value after the store has loaded.
This works for me (tested as an ExtJS 3.4 fiddle).
var hatComboStore = new Ext.data.JsonStore({
autoLoad: true,
fields: [
'id',
'title'
],
url: 'https://jsonplaceholder.typicode.com/todos'
});
var hatCombo = new Ext.form.ComboBox({
fieldLabel: 'Hat',
store: hatComboStore,
displayField: 'title',
valueField: 'id',
mode: 'local',
submitValue: true,
triggerAction: 'all',
// Apparently does not work with remote store.
// value: '1'
});
hatComboStore.on('load', () => hatCombo.setValue('1'));
new Ext.form.FormPanel({
items: hatCombo,
renderTo: Ext.getBody()
});

see example of setting default value:
Combo config:
{
triggerAction: 'all',
id: 'dir_id',
fieldLabel: 'Direction',
queryMode: 'local',
editable: false,
xtype: 'combo',
store : dirValuesStore,
displayField:'name',
valueField:'id',
value: 'all',
width: 250,
forceSelection:true
}
source: Extjs 4 combobox default value

Reload a ComboBox store on trigger click Extjs 3.4

I'm a beginner on js and ExtJS 3.4, I'm trying to use Ext.form.ComboBoxin a Ext.window to show the list of js objects (layers).
The problem is when I create the window the first time and I click on the combobox trigger I get my layers list correctly, but when I remove or add a layer and I click again on the trigger the store don't update and I find the same list.
Can you please help me to find a solution to this problem, for example when I click on the trigger it will update and load the new list store ?
Any suggestion is welcome.
CODE SNIPPET
// The "ImageField" is an item witch is called on the return of the methode "createWindow" ...
createWindow: function() {
ImageField = new Ext.form.ComboBox(Ext.apply({
name: "Image_ref",
fieldLabel: "Image Input (Required)",
emptyText: "Select your Image",
xtype: 'combo',
forceSelection: true,
editable: true,
allowBlank: true,
triggerAction: 'all',
mode: 'local',
valueField: 'value',
displayField: 'text',
labelWidth: 300
width: 250,
id: 'myCombo',
hideLabel: false,
lazyRender: false,
lazyInit: false,
mode: 'local',
triggerAction: 'all',
store: new Ext.data.SimpleStore({
autoLoad: true,
autoDestroy: true,
fields: ['text', 'value'],
data: layer_liste_WCS // is a liste of js objects
}),
listeners: {
beforequery: function(qe) {
// console.log(qe);
qe.cancel = true;
addComboxFieldItemsWCS(); // Run this methode to get "layer_liste_WCS" witch is liste of data
var actionComboBox = Ext.getCmp('myCombo');
.
.
.
.
.
.
// I don't know how to do to reload the store after runing the methode "addComboxFieldItemsWCS"
}
}
}, base));
return new Ext.Window({
closable: true,
resizable: false,
shadow: false,
closeAction: 'hide',
region: "center", //"north","south","east","west"
width: 480,
height: 190,
iconCls: 'wind_icon',
plain: true,
layout: 'border',
buttonAlign: 'right',
layout: 'fit',
listeners: {
show: function() {
this.el.setStyle('left', '');
this.el.setStyle('top', '');
}
},
items: [{
region: 'center',
xtype: 'tabpanel',
activeTab: 0,
width: 50,
height: 20,
items: [{ // we will declare 3 tabs
title: 'Datas Inputs',
closable: false,
iconCls: 'input_icon',
active: true,
items: [{
xtype: 'form',
autoWidth: true,
labelWidth: 185,
bodyStyle: "padding:10px;",
items: [
ImageField,
]
}]
}]
}],
});
},

I'm late for the answer but I take a chance.
Do you have an ajax call in addComboxFieldItemsWCS?
Put this code on your callback if you can:
Ext.getCmp('myCombo').getStore().loadData(layer_liste_WCS, false);
For your information, The false parameter is to replace existing data.
Hope this help.

Extjs grid filter using store.filter

I am using this to output a query from a database which outputs my data as I expect.
We are now wanting to filter that data by passing the the 'color' column if we want.
<script type="text/javascript">
Ext.onReady(function(){
var events_ds = new Ext.data.JsonStore({
autoLoad: true,
autoDestroy: true,
url: '<% $base %>json/events/WWN.json',
storeId: 'events_ds',
idProperty: 'id',
fields: [ 'id', 'precedence', 'affectedWWN', 'eventType', 'color', 'CollectTime' ]
});
var event_grid = new Ext.grid.GridPanel({
title: 'Events',
ds: events_ds,
height: 300,
columns: [
{
header: "ID",
dataIndex: 'id',
},
{
header: "Priority",
dataIndex: 'precedence',
sortable: true
},
{
header: "affectedWWN",
dataIndex: 'affectedWWN',
width:150,
sortable: true
},
{
header: "eventType",
dataIndex: 'eventType',
width:300,
sortable: true
},
{
header: "color",
dataIndex: 'color',
sortable: true
},
{
header: "CollectTime",
dataIndex: 'CollectTime',
width:150,
sortable: true
}]
});
var main_panel = new Ext.Panel({
autoScroll: true,
renderTo: 'main_panel',
items: [event_grid]
});
});
</script>
I am new at this and what I am seeing is to use something similar to this:
store.filter("color", "yellow");
but the filtering doesn't work like I am expecting.
What am I missing?

var event_grid = new Ext.grid.GridPanel({
title: 'Events',
//ds: events_ds, ???
store: events_ds,

ExtJs combo forced to select the first item (with example code)

I have a combo B that gets loaded by other combo A (triggered by 'select' listener)
once B is populated, I see all items but now from drop-down in Combo B,
I'm force to select the first item with mouse
I can select other item only by typing
Please help!!!!
code for Combo A
{
xtype: 'combo',
displayField: 'value',
emptyText: 'Please select A first',
fieldLabel: 'Combo A',
id: 'comboA',
maxHeight: 240,
mode: 'local',
triggerAction: 'all',
typeAhead: true,
typeAheadDelay: 100,
valueField: 'id',
store: new Ext.data.JsonStore({
url: '/cgi-bin/server.cgi',
fields: ['id', 'name'],
baseParams: {
action: 'getAList'
},
autoLoad: true,
root: 'aList'
}),
listeners: {
'select': {
fn: function(){
var comboB = Ext.getCmp('comboB');
comboB.clearValue();
comboB.store.removeAll();
comboB.store.reload({
params: {
id: this.getValue()
}
})
}
}
}
}
Code for combo B:
{
xtype: 'combo',
displayField: 'item',
editable: true,
emptyText: 'Select a Combo A first',
fieldLabel: 'Combo B',
id: 'comboB',
lazyInit: true,
maxHeight: 240,
mode: 'local',
triggerAction: 'all',
typeAhead: true,
valueField: 'id',
width: 220,
store: new Ext.data.JsonStore({
url: '/cgi-bin/server.cgi',
root: 'bList',
autoLoad: false,
fields: ['id,', 'item'],
baseParams: {
action: 'getBList'
},
listeners: {
'beforeload': function(){
Ext.getCmp('comboB').disable();
},
'load': function(){
Ext.getCmp('comboB').enable();
}
}
})
}

Not sure what exactly is wrong here but I suspect this piece in your comboA is not getting fired as expected -
comboB.store.reload({
params: {
id: this.getValue()
}
})
So comboB is still disabled. when you click on the comboB trigger, it loads the store and the comboB's store's load listener is kicking in as expected to enable the combo.
Try putting some debug statements or stepping through the piece of code above.

EXTJS Writer Grid - removal of row - client and serverside

At the moment when I remove a row - it reappears on the client side - refreshing the page I see it has indeed been deleted
Adding a store.reload in the method means it appears again and then disappears when the store is reloaded.
Any help appreciated
// The DataWriter component.
var writer = new Ext.data.JsonWriter({
encode: false
})
Ext.namespace('codeblender');
codeblender.app = function() {
/**
* Render the ground links
*
* #param val
* #param p
* #param record
* #return
*/
function rendererGroundLink(val, p, record) {
var string = record.data.ground;
var newContent = string.replace(/ /g, '-');
return ('' + record.data.ground + '');
}
// Public space
return {
// Public methods
init: function() {
// !Create the data store
var store = new Ext.data.JsonStore({
fields: [{
name: 'id',
type: 'int'
}, {
name: 'division_id',
type: 'int'
}, {
name: 'competition',
type: 'string'
}, {
name: 'date',
type: 'date',
dateFormat: 'Y-m-d'
}, {
name: 'time',
type: 'time'
}, {
name: 'referee',
type: 'string'
}, {
name: 'ground',
type: 'string'
}, {
name: 'team_a',
type: 'string'
}, {
name: 'score_a',
type: 'string'
}, {
name: 'scorer_a',
type: 'string'
}, {
name: 'team_b',
type: 'string'
}, {
name: 'score_b',
type: 'string'
}, {
name: 'scorer_b',
type: 'string'
}],
idProperty: 'id',
messageProperty: 'message',
pruneModifiedRecords: true,
remoteSort: true,
restful: true,
root: 'data',
sortInfo: {
field: 'date',
direction: "DESC"
},
successProperty: 'success',
totalProperty: 'totalCount',
url: '/restfixture',
writer: writer
});
store.load({
params: {
start: 0,
limit: 50,
sort: 'date',
dir: 'DESC'
}
});
// !Create the Team data store
var storeTeam = new Ext.data.JsonStore({
baseParams: {
status: 'Active'
},
fields: [{
name: 'id',
type: 'int'
}, {
name: 'team',
type: 'string'
}],
restful: true,
root: 'data',
sortInfo: {
field: 'team',
direction: "ASC"
},
url: '/restteam'
});
// !Create the Ground data store
var storeGround = new Ext.data.JsonStore({
fields: [{
name: 'id',
type: 'int'
}, {
name: 'ground',
type: 'string'
}],
restful: true,
root: 'data',
url: '/restground'
});
// !Create the Referee data store
var storeReferee = new Ext.data.JsonStore({
fields: [{
name: 'id',
type: 'int'
}, {
name: 'referee',
type: 'string'
}],
restful: true,
root: 'data',
url: '/restreferee'
});
// !Create the column model
var columns = [{
header: 'Division',
sortable: true,
dataIndex: 'division_id',
width: 75,
editor: {
allowBlank: false,
editable: false,
lazyRender: true,
mode: 'local',
store: [
[1, 'Division 1'],
[2, 'Division 2'],
[3, 'Division 3']
],
triggerAction: 'all',
xtype: 'combo'
}
}, {
header: 'Competition',
sortable: true,
dataIndex: 'competition',
editor: {
allowBlank: false,
editable: false,
lazyRender: true,
mode: 'local',
store: ['Season 8', 'Cup 8', 'Season 7', 'Cup 7', 'Season 6', 'Cup 6', 'Season 5', 'Cup 5', 'Season 4', 'Cup 4', 'Season 3', 'Cup 3', 'Season 2', 'Cup 2', 'Season 1', 'Cup 1'],
triggerAction: 'all',
xtype: 'combo'
}
}, {
header: 'Date',
sortable: true,
dataIndex: 'date',
xtype: 'datecolumn',
format: 'Y-m-d',
width: 100,
editor: {
allowBlank: false,
editable: true,
emptyText: 'Date',
format: 'Y-m-d',
xtype: 'datefield'
}
}, {
header: 'Time',
sortable: false,
dataIndex: 'time',
editor: {
allowBlank: false,
editable: false,
format: 'H:i:s',
increment: 5,
minValue: '09:00:00',
xtype: 'timefield'
}
}, {
header: 'Referee',
sortable: true,
dataIndex: 'referee',
editor: {
allowBlank: false,
displayField: 'referee',
editable: false,
emptyText: 'Select Referee',
forceSelection: true,
lazyRender: true,
mode: 'remote',
store: storeReferee,
triggerAction: 'all',
valueField: 'id',
xtype: 'combo'
}
}, {
header: 'Ground',
sortable: true,
dataIndex: 'ground',
renderer: rendererGroundLink,
editor: {
allowBlank: false,
displayField: 'ground',
editable: false,
emptyText: 'Select Ground',
forceSelection: true,
lazyRender: true,
mode: 'remote',
store: storeGround,
triggerAction: 'all',
valueField: 'id',
xtype: 'combo'
}
}, {
header: 'Team A',
sortable: true,
dataIndex: 'team_a',
editor: {
allowBlank: false,
displayField: 'team',
editable: false,
emptyText: 'Select Team A',
forceSelection: true,
lazyRender: true,
mode: 'remote',
name: 'team',
store: storeTeam,
triggerAction: 'all',
valueField: 'id',
xtype: 'combo'
}
}, {
header: 'Score A',
sortable: true,
dataIndex: 'score_a',
editor: {
xtype: 'spinnerfield'
}
}, {
header: 'Scorer A',
sortable: false,
dataIndex: 'scorer_a',
editor: {
xtype: 'textarea'
}
}, {
header: 'Team B',
sortable: true,
dataIndex: 'team_b',
editor: {
allowBlank: false,
displayField: 'team',
editable: false,
emptyText: 'Select Team B',
forceSelection: true,
lazyRender: true,
mode: 'remote',
name: 'team',
store: storeTeam,
triggerAction: 'all',
valueField: 'id',
xtype: 'combo'
}
}, {
header: 'Score B',
sortable: true,
dataIndex: 'score_b',
editor: {
xtype: 'spinnerfield'
}
}, {
header: 'Scorer B',
sortable: false,
dataIndex: 'scorer_b',
editor: {
xtype: 'textarea'
}
}
];
// Create the pager
var pagingBar = new Ext.PagingToolbar({
displayInfo: true,
displayMsg: '{0} - {1} of {2}',
emptyMsg: 'No Data',
pageSize: 50,
store: store
});
// Create the Grid
var grid = new xg.GridPanel({
bbar: pagingBar,
columns: columns,
height: 500,
iconCls: 'icon-grid',
loadMask: {
msg: 'Loading data.',
enabled: true
},
plugins: [rowEditor],
renderTo: 'dbGrid',
sm: new Ext.grid.RowSelectionModel({
singleSelect: true
}),
store: store,
stripeRows: true,
tbar: [{
text: 'Add',
iconCls: 'icon-add',
handler: function() {
var record = new store.recordType({
division_id: 1,
date: (new Date()).clearTime(),
time: '10:00:00',
referee: '',
ground: '',
team_a: '',
score_a: '',
team_b: '',
score_b: ''
});
grid.suspendEvents();
rowEditor.stopEditing();
grid.store.insert(0, record);
grid.getView().refresh();
grid.getSelectionModel().selectRow(0);
rowEditor.startEditing(0);
grid.resumeEvents();
}
}, {
iconCls: 'icon-del',
text: 'Remove Fixture',
handler: function() {
rowEditor.stopEditing();
grid.suspendEvents();
var record = grid.getSelectionModel().getSelected();
if (record) {
store.remove(record);
}
store.reload({}, true);
grid.resumeEvents();
}
}],
title: 'Fixtures',
viewConfig: {
forceFit: true
}
});
}
};
}();

Try:
grid.getView().refresh()
Instead of:
store.reload({}, true);