how to get total records with a previous filter in a Sencha Touch app?

Question

Working with an application based in Sencha Touch I need to get total amount of a store but with a previous filter implemented.

I can do store.getCount() and to know the total records of a store, but How to know total records with a previous filter?

Answer 1

Here is an alternative solution :

var count = 0;

store.findBy(function(rec) {
    if (rec.get('myFilter')) {
        count++; // Only counting matching data
    }
});

console.log(count); // Total amount of filtered data

From : https://www.sencha.com/forum/showthread.php?174156-Store-count-by-criteria-without-filter