Several dependent Comboboxes in the form. How it works?

[Tpona]

I have form, which included several comboboxes (country, region, city, street). Each of combo depended from previous combo (by his selected id) except first (country).
This value transferred through baseParams?

MyCode (country, region):

	var fieldSetAddress = {
		xtype       : 'fieldset',
        title       : 'Адрес',
        flex        : 1,
        border      : false,
        labelWidth  : 60,
        defaultType : 'textfield',
        defaults    : {
            anchor     : '-5',
            allowBlank : false
        },
        items : [
           {
	        	xtype:'combo',
	            width:'98%',
	            fieldLabel: 'Страна',
	        	displayField:'name',
	            loadingText:'Загрузка...',
	            emptyText:'Выберите страну...',
	            name: 'countryId',
                triggerAction: 'all',
                autocomplete: true,
	            store: new Ext.data.JsonStore({
	            	root          : 'results',
	            	idProperty: 'id',
	            	totalProperty : 'total',
	            	fields     : [
	            		{
	                        name    : 'name',
	                        mapping : 'name'
	            		},{
	                        name    : 'id',
	                        mapping : 'id'
	            		}	
	            	],
	            	proxy : new Ext.data.ScriptTagProxy({
	            		method: 'POST',
	            		url : './addresses/getlistcountries/'
	            	})
	            })
	       },{
	    		xtype:'combo',
	            width:'98%',
	            fieldLabel: 'Регион',
	            name: 'regionId',
	        	displayField:'name',
	            autocomplete: true,
	            fieldLabel: 'Регион',
	            forceSelection: true,
	            loadingText:'Загрузка...',
	            triggerAction: 'all',
	            valueNotFoundText: 'Выберите регион...',
	            emptyText:'Выберите регион...',
	            store: new Ext.data.JsonStore({
	            	idProperty: 'id',
	            	root          : 'results',
	            	totalProperty : 'total',
	            	baseParams    : {
	            		countryId : 0
	            	},
	            	fields     : [
	            		{
	                        name    : 'name',
	                        mapping : 'name'
	            		},{
	                        name    : 'id',
	                        mapping : 'id'
	            		}	
	            	],
	            	proxy : new Ext.data.ScriptTagProxy({
	            		method: 'POST',
	            		url : './addresses/getlistregions/'
	            	})
	            }),
	       }]
	};

How to do it right?
Thx

[Animal]

For a start, why are you using ScriptTagProxy?

But your second one just needs a beforeload listener on the Store to add a parameter to the params option to carry the value from the previous combo.

[Condor]

No, beforeload of the second combobox store is only fired once with triggerAction:'all'. You'll need to force it to load again from the select event of the first combobox, e.g.

combobox1.on('select', function(combo, record){
  var bp = combobox2.store.baseParams;
  if (!bp || bp.parentId != record.id) {
    combobox2.store.setBaseParam('parentId', record.id}; // pass selected id when loading second combobox
    combobox2.clear(); // current value of combobox2 is no longer valid
    delete combobox2.lastQuery; // force loading of combobox2 when used next
  }
});

[Tpona]

For a start, why are you using ScriptTagProxy?

What Proxy i must use? Or just write url in combo params?

No, beforeload of the second combobox store is only fired once with triggerAction:'all'. You'll need to force it to load again from the select event of the first combobox, e.g.

My formPanel is a company information. I want use he for create & edit company data.
This will be work, when i call load() FormPanel, which include this combo-fields, for editing company?

Thx for reply!

[Animal]

Use an HttpProxy unless you are talking to a server on another domain which uses JSON-P

[Tpona]

combobox2.clear(); // current value of combobox2 is no longer valid

clear() does not work (( But it works without this line of code.

[Condor]

Sorry, the method is called clearValue() and not clear().