[SOLVED] Help with DirectStore

[vinnybozz]

Hi, I am trying to convert an existing Store using an HttpProxy and JsonReader to a DirectStore ...

I just can't seem to make it work, here's a sample of my json store:


var store = new Ext.data.Store({
proxy: new Ext.data.HttpProxy({
method: 'POST',
url: 'ajax/get-users.php',
timeout: 120000
}),
reader: new Ext.data.JsonReader({
root: 'users',
totalProperty: 'totalCount'
},
[
{name: 'firstname', mapping: 'firstname'},
{name: 'lastname', mapping: 'lastname'},
{name: 'id', mapping: 'id'}
]
)
})

with server response:

{"totalCount":100,"users":[{"firstname":"Mo","lastname":"Smith","id":"9942418"},{"firstname":"Carlos","lastname"
:"Tran","id":"9954769"}]}


I am replacing it with:


var store = new Ext.data.DirectStore({
directFn: TestAction.getUsers,
paramsAsHash: true,
root: 'users',
totalProperty: 'totalCount',
idProperty: 'id',
fields: [
{name: 'firstname', mapping: 'firstname'},
{name: 'lastname', mapping: 'lastname'},
{name: 'id', mapping: 'id'}
]
});

which returns:

{"type":"rpc","tid":2,"action":"TestAction","method":"getUsers","result":{"totalCount":100,"users":[
{"firstname":"Mo","lastname":"Smith","id":"9942418"},{"firstname":"Carlos","lastname":"Tran","id":"9954769"
}]}}

It seems like the error occurs in the Reader, not being able to understand the data.

If anyone has any ideas it would be greatly appreciated.

Thx
Dan

[vinnybozz]

ok that was simple:


paramsAsHash: false,

[elishnevsky]

I had the same issue, setting paramsAsHash to false solved it. But I still don't understand exactly what it does. It's not very clear from the docs. Can anyone explain this config option better?
Thanks

[evant]

paramsAsHash takes all the parameters and sends them off as a JSON object.

paramOrder defines the order of the params to be sent, eg:



{
foo: 1,
bar: 'some value',
baz: 3
}

paramOrder: ['baz', 'foo', 'bar']


So it would be like calling the method:



Foo.MyMethod(3, 1, 'some value');

[elishnevsky]

Ok, that's pretty clear. But what if a method had no arguments, like in my case? Setting paramsAsHash:true doesn't display the data in my GridPanel, although the data is coming back.

[tuxhero]

Can u show some example

paramsAsHash takes all the parameters and sends them off as a JSON object.

paramOrder defines the order of the params to be sent, eg:



{
foo: 1,
bar: 'some value',
baz: 3
}

paramOrder: ['baz', 'foo', 'bar']


So it would be like calling the method:



Foo.MyMethod(3, 1, 'some value');

[ficeto]

if(this.paramOrder){
for(var i = 0, len = this.paramOrder.length; i < len; i++){
args.push(params[this.paramOrder[i]]);
}
}else if(this.paramsAsHash){
args.push(params);
}
paramsAsHash is true by default
paramOrder is undefined
so when you put paramsAsHash:false, you don't add the parameters(limit, start ...) to the arguments(which are []).later on this happens:
args.push(this.createCallback(action, reader, callback, scope, options));
directFn.apply(window, args);
which adds object after all the arguments and that is the point where it all goes bad and does not load the request. I moved things around to add the arguments after that object and things show up, but the arguments still don't pass to the directFn (regardless of the form of arguments [arg1,arg2] or {arg1:val1,arg2:val2})....