我有一个商店,需要在代码中加载并对记录执行操作。但由于执行是异步的,因此在商店完全加载之前,商店加载后的语句就会被执行。
如何暂停执行直到商店完成加载。
以下是代码:
var fieldsStore = new Ext.create('Ext.data.Store', {
model : 'FieldsModel',
proxy : {
type : 'ajax',
url : 'queryBuilder_getQueryDetails',
extraParams : {
queryID : queryID
},
reader : {
type : 'json'
}
},
listeners : {
load : function(store, records, successful, operation, eOpts) {
if (successful) {
records.forEach(function(rec) {
// default settings: if datatype is INTEGER - SUM
if (rec.get('fieldType') == 'INTEGER') {
rec.set('fieldSettingKey', 'SUM');
rec.set('fieldSettingValue', 'Sum');
} else {
// else select ROWHEADER by default
rec.set('fieldSettingKey', 'ROWHEADER');
rec.set('fieldSettingValue', 'Row Header');
}
});
store.commitChanges();
}
}
}
});
function loadPivotDefinition(pivotDef) {
// load query in combo
Ext.getCmp('queryListCombo').select(pivotDef.get('queryID'));
// set params as the query id to fetch fields
fieldsStore.proxy.extraParams.queryID = pivotDef.get('queryID');
// load fields store
fieldsStore.load();
// THIS IS WHERE I WANT TO CODE TO HALT AND CHECK IF THE STORE HAS COMPLETED LOADING.
// load field data (checked, data binding )
debugger;
pivotDef.get('rowHeaders').forEach(
function(rowRecord) {
var storeRecord = fieldsStore.findRecord('fieldName',
rowRecord.fieldName, 0, false, true, true);
storeRecord.set('checked', rowRecord.checked);
storeRecord.set('fieldSettingKey', rowRecord.fieldSettingKey);
storeRecord.set('fieldSettingValue',
rowRecord.fieldSettingValue);
});
}