Populating Combobox from remote server - extjs4

Question

I have a combobox, i need to populate data from the server. In the server side i have the following data to be displayed.
PersonID
PersonFName
PersonLName
In the combobox, i need to display the text as PersonFName + PersonLName (Like James Smith- This is what it will display in the drop down) , and when a user selects a record, I need to display the corresponding PersonID (Like Person with PersonFName and PersonLName has the PersonID of 1) of that user.
I am unable to figure this out, here's my code
View :
{
xtype: 'combobox',
id: 'personcombo',
readOnly: false,
selectOnFocus: true,
forceSelection: true,
store: 'Person'
}
Store :
Ext.define('MyApp.store.PersonStore', {
extend: 'Ext.data.Store',
requires: [
'MyApp.model.Person'
],
constructor: function(cfg) {
var me = this;
cfg = cfg || {};
me.callParent([Ext.apply({
model: 'MyApp.model.Person',
proxy: {
type: 'ajax',
api: {
read: 'person.php',
create: 'person.php'
},
reader: {
type: 'array'
}
}
}, cfg)]);
}
});
Model :
Ext.define('MyApp.model.Person', {
extend: 'Ext.data.Model',
fields: [
{
name: 'PersonID'
},
{
name: 'PersonFName'
},
{
name: 'PersonLName'
}
]
});

Answer 1

I think your question is: how to display PersonFName + PersonLName in the combobox but keep the PersonID field as the value.
You should add a converted field which joins the first and last names in your data model and then make that one your combobox displayField config.
Though the other answer did bring up a good point that the defined store in your combo is Person but you are showing code for a store named PersonStore.
It would look something like this:
Model:
Ext.define('MyApp.model.Person', {
extend: 'Ext.data.Model',
fields: [
{
name: 'PersonID'
},
{
name: 'PersonFName'
},
{
name: 'PersonLName'
},
{
name: 'PersonName',
convert: function(value, record) {
return record.data.PersonFName + ' ' +
record.data.PersonLName;
}
}
]
});
Store:
// changed to "Person" instead of "PersonStore"
Ext.define('MyApp.store.Person', {
extend: 'Ext.data.Store',
requires: [
'MyApp.model.Person'
],
model: 'MyApp.model.Person',
proxy: {
type: 'ajax',
api: {
read: 'person.php',
create: 'person.php'
},
reader: 'array'
}
});
View:
{
xtype: 'combobox',
id: 'personcombo',
readOnly: false,
selectOnFocus: true,
forceSelection: true,
store: 'Person',
valueField: 'PersonID',
displayField: 'PersonName' // the converted field
}

Answer 2

Your combobox has 'Person' as the store, but I don't see you create a store called Person anywhere. Try store: Ext.create('MyApp.store.PersonStore', {autoLoad: true}).
You can also simplify your store:
Ext.define('MyApp.store.PersonStore', {
extend: 'Ext.data.Store',
requires: [
'MyApp.model.Person'
],
model: 'MyApp.model.Person',
proxy: {
type: 'ajax',
api: {
read: 'person.php',
create: 'person.php'
},
reader: 'array'
}
});