Generic component - extjs4

Question

i need to define a set of generic component in Extjs4:
for example i want to define a single generic store and when i need a store in my code is necessary to create a store just define and pass to him the model and the url for get the data.
This is my store:
Ext.define('base.common.store.BaseStore',{
extend:'Ext.data.Store',
remoteSort: true,
proxy: {
//url:this.url,
type: 'ajax',
pageParam: false, //to remove param "page"
startParam: false, //to remove param "start"
limitParam: false, //to remove param "limit"
reader: {
type: 'json',
id: 'id',
root: 'list'
}
}
})
and this is when i create an instance of it:
var dsGroups = Ext.create('base.common.store.BaseStore',{
model:'base.common.model.Group'
//proxy:{url:"Group.getGroups"}
});
dsGroups.getProxy().url = "Group.getGroups";
This question is: There is a way to do this job for inject the proxy.url property in the Ext.create call? (i don't want to use the last statement)
Anytype of help or idea is usefull.

Answer 1

Ext.define('base.common.store.BaseStore',{
extend:'Ext.data.Store',
remoteSort: true,
defaultProxyCfg: {
type: 'ajax',
pageParam: false, //to remove param "page"
startParam: false, //to remove param "start"
limitParam: false, //to remove param "limit"
reader: {
type: 'json',
id: 'id',
root: 'list'
}
}
constructor: function(config){
config = Ext.apply({}, config);
config.proxy = Ext.apply({
url: config.url
}, this.defaultProxyCfg);
this.callParent([config]);
}
});