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Extjs: How to set extraparam from controller to use in the store for populating combobox value.want to set extraparam value as abc.1-cond1, abc.2-con2

In ExtJS I want to set extraParam in a controller.
These extraParams should be used in a store.
I want to show data in my combobox based on a condition.
If condition 1 is satisfied the extraparam contains abc.1
Then the store loads data corresponding to a groupID to get data
..same for condition 2(abc.2).
how can i set extraparam?
//Store
abcStore: {
type: 'store',
proxy: {
type: 'ajax',
url: PPA_SERVICE_BASE_URL + 'any.Service',
paramsAsJson: true,
actionMethods: {
read: 'POST'
},
reader: {
type: 'json',
rootProperty: 'data'
},
}
}
//Combobox
xtype: 'combobox',
fieldLabel: 'Payment Stream Type',
labelWidth: 130,
width: 280,
editable: false,
margin: '0 10 0 0',
displayField: 'label',
allowBlank: false,
bind: {
store: '{abcStore}',
}
//Controller - function to load data
loadabcData: function(newValue) {
var me = this,
view = me.getView(),
viewModel = this.getViewModel(),
store = viewModel.getStore('abcStore'),
extraParam = {groupId: groupId};
store.getProxy().setExtraParams(extraParams);
store.load();
// How should i further set this groupID.I want to set groupId value as abc.1 on condition1 and //abc.2 on condition 2
},

You almost had it
loadabcData: function(condition) {
var me = this,
view = me.getView(),
viewModel = this.getViewModel(),
store = viewModel.getStore('abcStore'),
// ==> next line does the trick
groupId = (condition === 'Cond1') ? 'abc.1' : 'abc.2',
extraParam = {groupId: groupId};
store.getProxy().setExtraParams(extraParams);
store.load();
// How should i further set this groupID.I want to set groupId value as abc.1 on condition1 and //abc.2 on condition 2
},

Problems loading the storage in the renderer for the combobox field

My field looks like this:
...
{
xtype: 'gridcolumn',
text: 'MyField',
dataIndex: 'contragent',
editor: {
xtype: 'combobox',
allowBlank: false,
displayField:'name',
valueField:'id',
queryMode:'remote',
store: Ext.data.StoreManager.get('ContrAgents')
},
renderer: function(value, metaData, record, rowIndex, colIndex, store, view) {
store_ca = Ext.data.StoreManager.get('ContrAgents');
if (record.data.contragent != ''){
store_ca.load();
var contr = store_ca.getById(record.data.contragent);
//indexInStore = store_ca.findExact('id', value);
console.log(contr);
return contr.data.name;
}
}
},
...
Store 'ContrAgents' looks like this:
Ext.define('BookApp.store.ContrAgents', {
extend: 'Ext.data.Store',
model: 'BookApp.model.ContrAgents',
autoLoad: true,
proxy: {
type: 'ajax',
url: 'app/data/Contragents.json'
}
});
The problem is that the name of the required field is not returned (contr.data.name), contr is null.
Apparently the store does not have time to load, in this case I need to load it, but store_ca.load () does not bring results.
How to load the store correctly to use
store_ca.getById (record.data.contragent); to return the name of the field?

I'm not entirely sure why you would need to use a store to populate the value in the grid's cell, because you could always just send the text value through the grid's store as opposed to the id.
You probably have a good reason for doing it, so I've revisited the fiddle and implemented it accordingly. You should be able to check it out here
The changes
../app/store/ContrAgents.js
Ext.define('Fiddle.store.ContrAgents', {
extend: 'Ext.data.Store',
model: 'Fiddle.model.ContrAgents',
autoLoad: false,
proxy: {
type: 'ajax',
url: 'Contragents.json'
}
});
../app/store/ListViewStore.js
Ext.define('Fiddle.store.ListViewStore', {
extend: 'Ext.data.Store',
model: 'Fiddle.model.ListViewModel',
autoLoad: false,
proxy: {
type: 'ajax',
url: 'List.json'
}
});
../app/view/ListView.js
Ext.define('Fiddle.view.ListView' ,{
extend: 'Ext.grid.Panel',
alias: 'widget.booklist',
itemId: 'BookList',
store: 'ListViewStore',
xtype: 'listview',
plugins: 'gridfilters',
initComponent: function() {
var me = this;
// Pin an instance of the store on this grid
me.myContrAgents = Ext.data.StoreManager.lookup('ContrAgents');
// Manually load the 'ContrAgents' first
me.myContrAgents.load(function(records, operation, success) {
// Now load the 'ListViewStore' store
me.getStore().load();
});
me.columns = [
{
header: 'ID',
dataIndex: 'id',
sortable: true,
width: 35
},
{
text: 'Контрагент',
dataIndex: 'contragent',
renderer: function(value, metaData, record, rowIndex, colIndex, store, view) {
if (value > 0) {
if (rec = me.myContrAgents.findRecord('id', value)) {
return rec.get('name');
}
}
return '';
}
}
];
me.callParent(arguments);
}
});
Data/List.json
"data" : [
{"id": 1, "contragent": "2"},
{"id": 2, "contragent": "3"},
{"id": 3, "contragent": "4"}
]

You are trying to query the store before it's data is actually populated. You want to avoid loading the store for each time the renderer event is triggered.
The Ext.data.Store->load function is asynchronous
See docs
store.load({
scope: this,
callback: function(records, operation, success) {
// the operation object
// contains all of the details of the load operation
console.log(records);
}
});
Change your implementation to this and test if it works
renderer: function(value, metaData, record, rowIndex, colIndex, store, view) {
store_ca = Ext.data.StoreManager.get('ContrAgents');
if (record.data.contragent != ''){
store_ca.load(function(records, operation, success) {
console.log('loaded records');
var contr = store_ca.getById(record.data.contragent);
indexInStore = store_ca.findExact('id', value);
console.log({
contr: contr,
indexInStore: indexInStore
});
});
// Not sure what you are trying to return here
// return contr.data.name;
}
}
Remote Combo in ExtJS Grid Example
I found a good example for what you are trying to accomplish here with a combo dropdown in a grid with a remote store, check out this post (you might have to register for free but the solution is worth it and I won't plagiarise it here)
Grid with combo edit widget with binding
Perhaps this could help...
Ext.define('Fiddle.view.ListView' ,{
extend: 'Ext.grid.Panel',
alias: 'widget.booklist',
itemId: 'BookList',
store: 'ListViewStore',
xtype: 'listview',
plugins: ['cellediting','gridfilters'],
initComponent: function() {
this.columns = [
{
header: 'ID',
dataIndex: 'id',
sortable: true,
width: 35
},
{
text: 'Контрагент',
width: 150,
xtype: 'widgetcolumn',
dataIndex: 'contragent',
widget: {
xtype: 'combo',
bind: '{record.contragent}',
allowBlank: false,
displayField: 'name',
valueField: 'id',
store: Ext.data.StoreManager.lookup('ContrAgents')
}
}
];
this.callParent(arguments);
}
});

Combobox Render with optional params

I am solving a requirement which can be simplified as following. I am fairly new to Ext.js and I need help in achieving the below.
I have 4 tables as follows.
So, I have 3000 companies and 9000 users mapped across various companies. I need to map moderators for each company in a grid.
I have an add button, which adds a row in the grid.
I achieved displaying the companies in the first column of a grid. Easy. So user can pick one.
I achieved displaying users belonging to that company in the second column of the grid. FYI, User can multi select moderators here.
Problem:
At this point, when I add a new row, pick a new company, the companyusers store gets refreshed, so, the values selected in 1st row are not valid values anymore and the first row's user column is displaying empty text (or) only the id's
My models are as follows
Ext.define('Mine.CompanyModel', {
extend: 'Ext.data.Model',
fields: ['Id', {name: 'Name', type:'string'}]});
Ext.define('Mine.UsersModel', {
extend: 'Ext.data.Model',
fields: ['Id', {name: 'Name', type:'string'}]});
Ext.define('Mine.CompanyUsersModel', {
extend: 'Ext.data.Model',
fields: ['company_user_id', 'UserName']}); //<companyuser Id>
Ext.define('Mine.CompanyModeratorModel', {
extend: 'Ext.data.Model',
fields: ['Id', 'CompanyUserId']});
My stores are
Ext.define('Mine.CompanyStore', {
extend: 'Ext.data.Store',
model: 'Mine.CompanyModel',
autoLoad: true,
proxy: new Ext.data.HttpProxy({
url: '/somecontroller/someaction',
reader: {
type: 'json',
root: 'Data'
}
})
});
Ext.define('Mine.UsersStore', {
extend: 'Ext.data.Store',
model: 'Mine.UsersModel',
autoLoad: true,
proxy: new Ext.data.HttpProxy({
url: '/somecontroller/someaction',
reader: {
type: 'json',
root: 'Data'
}
}),
});
Ext.define('Mine.CompanyUserStore', {
extend: 'Ext.data.Store',
model: 'Mine.CompanyUserModel',
autoLoad: false,
proxy: new Ext.data.HttpProxy({
url: '/somecontroller/someaction',
reader: {
type: 'json',
root: 'Data'
}
}),
//will add extra params here
});
Ext.define('Mine.CompanyModeratorStore', {
extend: 'Ext.data.Store',
model: 'Mine.CompanyModeratorModel',
autoLoad: false,
proxy: new Ext.data.HttpProxy({
url: '/somecontroller/someaction',
reader: {
type: 'json',
root: 'Data'
}
}),
});
My grid columns are
{
text: 'Company', width: '10%', dataIndex: 'id',
renderer: companyRenderer(combo_company), editor: combo_company
},
{
text: 'Users', width: '16%', dataIndex: 'company_user_id',
renderer: companyUsersRenderer(companyUsersCbo), editor: companyUsersCbo
}
My editor is
var companyUsersCbo = Ext.create('Ext.form.ComboBox', {
xtype: 'combo',
id: 'company_users',
name: 'company_users',
valueField: 'Id',
displayField: 'name',
allowBlank: false,
store: 'Mine.CompanyUsersStore',
multiSelect: false,
editable: true,
queryMode: 'local',
pickerAlign: 'bl',
listConfig: {
getInnerTpl: function (display) {
return '<div class="x-combo-list-item"><img src="' + Ext.BLANK_IMAGE_URL + '" class="chkCombo-default-icon chkCombo" /> {' + display + '} </div>';
}
}
listeners: {
expand: function () {
var mainGrid = Ext.getCmp('mygrid');
var selmodel = mainGrid.getSelectionModel();
var record = selmodel.getSelection();
if (record[0].get('id') != null) {
this.getStore().getProxy().setExtraParam('company_id', record[0].get('id')); // am storing the company id in a model
this.getStore().load();
}
}
}
});
My renderer is
var companyUsersRenderer = function (combo) {
return function (resources) {
var result = [];
resources = resources || [];
for (var idx = 0, len = resources.length; idx < len; idx++) {
var value = combo.getStore().find(combo.valueField, resources[idx]);
if (value != -1) {
var rec = combo.getStore().getAt(value);
result.push(rec.get(combo.displayField));
}
}
return result.join(', ');
}
}
What am I missing? What should I do so that the values (names) displayed in the combo box remain independent of the next rows.
What have I tried:: I have added a separate hidden column and set it to the names, added to the record. It worked fine, but its not the correct way. Also, when I double click the cell for editing, it shows the numbers (id's and not text) but after I expand, it shows the text.

naga Sandeep,
try to send params with your URL to get filtered records.
like,
url:'someThing/abc/1435'+'id='+record.id;
filter your store accordingly.

Problem is when your grid is rendered, your columns are rendered and your render function uses last state of the combo's store.
I would add a display field to CompanyUsersModel then fill it when a company is selected. Also I would abandon renderer function.

Extjs Grid Column- Combo displaying key instead of value after value change

I have grid which have dynamic column. When the user clicks on this column, it display list of values from that the store returns.Once they user select any value, I would like the displayfield to show the valueand not the numeric id(key) of that value.
.....................
......................
plugins : [
Ext.create('Ext.grid.plugin.CellEditing', {
clicksToEdit: 1,
pluginId: 'Editor',
listeners : {
delay:1,
scope: this
}
})
],
doAfterFilterRendered : function() {
for (var i = 0; i <Ext.getCmp('ReportGrid').gridColumns.length; i++) {
if (ColumnGridType == 'COMBOBOX')// base on some condition i m trying to create combo box
{
Ext.getCmp('ReportGrid').gridColumns[i].editor= {
xtype: 'combobox',
forceSelection: true,
id : 'idCombo'
editable: false,
triggerAction: 'all',
allowBlank: false,
store: me.getColumnStoreList("Country")// which return 2 dimentional array with key value
}
}
}
Ext.getCmp('ReportGrid').getStore().load();
Ext.getCmp('ReportGrid').reconfigure(Ext.getCmp('ReportGrid').store, Ext.getCmp('ReportGrid').gridColumns);
},
......................
........................
I tried following thing to display value instead of key.
doAfterFilterRendered : function() {
for (var i = 0; i <Ext.getCmp('ReportGrid').gridColumns.length; i++) {
if (ColumnGridType == 'COMBOBOX')// base on some condition i m trying to create combo box
{
Ext.getCmp('ReportGrid').gridColumns[i].editor= {
xtype: 'combobox',
forceSelection: true,
id : 'idCombo'
editable: false,
triggerAction: 'all',
allowBlank: false,
store: me.getColumnStoreList("Country") // which return 2 dimentional array with key value,
**fields: ['key', 'value']}),
valueField: 'key',
displayField: 'value',**
}
}
}

You need to add a renderer in your column grid:
Something like that
renderer: function(val){
index = me.getColumnStoreList("Country").findExact('key',val);
if (index != -1){
rs = me.getColumnStoreList("Country").getAt(index).data;
return rs.value;
}
},
Source: Extjs4 combobox displayValue in grid

ExtJs. Easyest way to show empty grid

I'm using ExtJs 4. I have a grid, but i don't have a store or columns pre defined. I just don't know what grid should be showing. But i still nead to render grid using Json markup.
I want to do something like this:
//grid with empty store and no collumns
{
xtype: 'grid',
columns: [],
store: new ArrayStore([])
}
What is the easyest way to do this?

You can't load create a grid without any columns.. however you can create one without any data (just set store to autoload: false). For example..
{
xtype: 'grid',
//..other config here
store: new Ext.data.JsonStore({
url: 'store/url.php',
autoLoad: false
}),
cm: new Ext.grid.ColumnModel({
columns: [
{ dataIndex: 'id', header: ' ' }
]
})
}