Ajax call cross domain

[dbottillo]

Hi,

i have to make a ajax call request cross domain
inside same domain i use:


Ext.Ajax.request({
url: 'url_same_domain.json',
success: function (response, opts){
...
},
failure: function (response, opts){
...
}
});


but how can i do this request cross domain?
i try Ext.ScriptTagProxy.request and Ext.ScriptTag.request
but it doesn't work

inside forum i found only example about store, instead i need to make this call outside a store component

Thank You

Daniele

[evant]

http://dev.sencha.com/deploy/touch/docs/?class=Ext.util.JSONP

[dbottillo]

ok thank you

i have another question

if my json is like:

Ext.util.JSONP.callback(
{
results: [
{
element: {
field1: ""
field2: ""
...
}
}
,{
element: {
field1: ""
field2: ""
...
}
]})


how can i make an appropriate model for binding to this json?

[evant]

The same as you normally would. Just use the scripttag proxy.

[dbottillo]

ok thank you

another question :D
now to load data i do:

Ext.util.JSONP.request({
url: 'url_for_data.json',
callbackKey: 'callback',
params: {
limit: 5
},
callback: function(data) {
data = data.results;
list.store.loadData(data);
}
});
and it works fine (where list in an Ext.List)
but if i want to update list with new records, how can i do?
i try

Ext.util.JSONP.request({
url: 'url_for_data.json',
callbackKey: 'callback',
params: {
limit: 30
},
callback: function(data) {
data = data.results;
list.store.add(data);
}
});

but list.store.add(data) say: 'Uncaught TypeError: Cannot read property 'id' of undefined'
i try also list.update(data) but it doesn't work...!

[evant]

You totally ignored what I said above. Use a store with a scripttag proxy.

[dbottillo]

ok sorry
but with scripttag proxy i have a problem that with Ext.util.JSONP.request i don't have:


store: new Ext.data.Store({
autoLoad: true,
model: 'Offer',
proxy: {
url: 'url.json',
type: 'scripttag',
reader: {
root: 'results'
}
}
}),
with this store
if my json is like:

results:[
{ id: 1, name: uno, ....., image: {
id: 90, type: jpeg
}, ...}
]
i can't get image.id! is like i can't get element nested in my json (with JSONP request i can get those element)

[evant]

http://www.sencha.com/forum/showthread.php?109507-mapping

[dbottillo]

ok thank you, with mapping it works

but even if with scripttagproxy i dont' understand how to update list
i try:


list.store.proxy.extraParams.limit=10; // i want to change parameters
list.store.sync();


but it say: 'Uncaught TypeError: Object [object Object] has no method 'writeRecords''

[evant]

store.read();

[dbottillo]

i receive: Uncaught ReferenceError: stcCallback1001 is not defined

[dbottillo]

anyone?

i can't undestand how it works this store

if i load store with this json:

stcCallback1001(
{ results: [ ...
it works
and if i do store.read(); it say 'Uncaught ReferenceError: stcCallback1001 is not defined'

but if i load store then i change json to

stcCallback1002(
{ results: [ ...
and do store.read(); it works!!

so why i have to change number prefix json? i can't change on my own...!

[dbottillo]

after searching i found solution


callbackParam: 'idSession'

so in my back_end i receive stcCallback00XX e then i can create json correctly
(i think there is some lack in documentation about this...!)