parameters - ExtJS - Load store with params -

i'm trying load store params in order filter data (as "where" in sql) didn't find how ... therefore, made filter on store load in order make when there many data, lags appears because load data , filter them.

is possible load store params ? tried example :

store.load({      params: { id : '300'}, }); 

but it's not working ..

here code; (i'm using extjs3.4 in groupoffice module (mvc model) that's why can see "go.", ... ).

i declare store

go.gestionfrais.storeaffichagemesfrais = new go.data.jsonstore({                 url: go.url('gestionfrais/frais/store'), // url model                 fields: ['id',...],  //              method: 'post', // have write line ? //              read: 'post',                 model: 'go\\gestionfrais\\model\\frais',         }); 

then created filter:

go.gestionfrais.storeaffichagemesfrais.on('load', function(){      go.gestionfrais.storeaffichagemesfrais.filterby( function(record, id) {            if(record.get("id_user") == id_currentuser && record.get('archive') == 'non' ) {                 return true;           }           return false;      }, this); }); 

and load store

go.gestionfrais.storeaffichagemesfrais.load( /*{params ?}*/ ); 

thanks reading me.

edit 1:

i have modify store declaration following mindparse link :

go.gestionfrais.storeaffichagemesfrais = new go.data.jsonstore({         // store configs         autodestroy: true,         url: go.url('gestionfrais/frais/store'),         storeid: 'storeaffichagemesfrais',         // reader configs         root: 'results',         idproperty: 'results',         fields: ['id', 'id_user', 'user', 'id_resp','demandeur', 'mois', 'prixtotal', {name: 'datecreation', type: 'date', dateformat: 'd-m-y'}, 'etat', {name: 'datesoumission', type: 'date', dateformat:'d-m-y'}, 'archive', {name: 'datevalidation', type: 'date', dateformat: 'd-m-y'}], // on récupère les champs qui nous intéressent (soit ceux à afficher).         //added         model: 'go\\gestionfrais\\model\\frais', }); 

then tried load store params (id=320) , can see in header :

query string parameter
--> r:gestionfrais/frais/store
--> security_token:ity...

form data
--> id:320
--> sort:id
--> dir:asc --> security_token:ityc ....

my param isn't in "query string parameters", normal ?

use proxy configuration send params controller :

store.proxy.extraparams = { id1 : '300', id2: '22', ... }; store.load();