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function filter(aKey) {
                    if (aKey) {
                        var filtered = model.qCards.filter(function (aType) {
                            var card_key, tk_type_name, p_name, e_name, account_id;
                            if (aType.card_key) {
                                card_key = aType.card_key.toString().toLowerCase().indexOf(aKey.toLowerCase()) !== -1;
                            }
                            if (aType.refTkType && aType.refTkType.tk_type_name) {
                                tk_type_name = aType.refTkType.tk_type_name.toLowerCase().indexOf(aKey.toLowerCase()) !== -1;
                            }
                            if (aType.refCardholder && aType.refCardholder.p_name) {
                                p_name = aType.refCardholder.p_name.toLowerCase().indexOf(aKey.toLowerCase()) !== -1;
                            }
                            if (aType.refEmitent && aType.refEmitent.e_name) {
                                e_name = aType.refEmitent.e_name.toLowerCase().indexOf(aKey.toLowerCase()) !== -1;
                            }
                            if (aType.account_id) {
                                account_id = aType.account_id.toString().toLowerCase().indexOf(aKey.toLowerCase()) !== -1;
                            }

                            if (card_key) {
                                return card_key;
                            } else if (tk_type_name) {
                                return tk_type_name;
                            } else if (e_name) {
                                return e_name;
                            } else if (account_id) {
                                return account_id;
                            }else {
                                return p_name;
                            }
                        });
                        requireScrollPageModule(filtered);
                    } else {
                        requireScrollPageModule(model.qCards);
                    }
                }