Reload Next JSON Data Grid ExtJS with Value from Ext Form

Question

I'm trying to create grid data view from ExtJS with pagination.
Actually there's no issue when I create a simple data grid.
Then I want to create a "filter/search" function using Ext Form.
It's only work for page one. Here is my Ext Form Code below :

var winFilter = Ext.create('widget.window',{
title   : 'Filter',
width  : 400,
height : 200,
modal  : true,
closeAction    : 'hide',
items  : frmFilter,
layout : 'fit',
bodyPadding: 5,
buttons:[
{
    text    : 'Filter',
    handler: function(btn){
        var win = btn.up('window');
        var form = win.down('form');
        tempProductID = form.getForm().findField('Product_ID').getSubmitValue();
        tempDescription = form.getForm().findField('Description').getSubmitValue();
        store.load({
            params: {
                start: 0,
                limit: itemsPerPage,
                productid: form.getForm().findField('Product_ID').getSubmitValue(),
                description: form.getForm().findField('Description').getSubmitValue()
            }
        });
        winFilter.hide();
    }
},
{
    text    : 'Close',
        handler: function(){
        winFilter.hide();
    }
}
]});

for the next page, my JSON return all data without using filtering value that I used before (Product ID and Description).
Please if any advice

Thanks bud.

Answer 1

params (when used as an argument of load method) are applied only once. If you want to apply these params to each request you have to modify proxy extraParams property:

Ext.apply(store.proxy.extraParams, {
    productid: form.getForm().findField('Product_ID').getSubmitValue(),
    description: form.getForm().findField('Description').getSubmitValue()
}, {});
store.load();

Else you can use store filter method ( store.remoteFilter should be set to true):

store.filter([
    {property: "productid", value: form.getForm().findField('Product_ID').getSubmitValue()},
    {property: "description", value: form.getForm().findField('Description').getSubmitValue()
]);

But note that the filter part of request url has different form when filter approach is used. In this case filter part looks something like ?filter=[{'property':'productid','value':2}]&limit=10... . Whereas when params approach is used url looks something like ?productid=2&limit=10... . So when filter approach is used backend should parse filter property of request.