Why AutoComplete does not filter using text field

This article explains why AutoComplete does not filter using the text field.

Solution:

In EJ2 AutoComplete, the search and filtering work based on the value field alone. Mapping the text field for AutoComplete will only update the text in the list items within the popup, but functionalities like sorting and filtering will be performed based on the value field. Therefore, you can bind only the value field based on the component design. To filter items in AutoComplete based on both text and value fields, use the predicate of the dataManager in the filtering event. The filtered data can then be updated using the updateData method.

Refer to the following code for filtering using both fields:

filtering: function(e)
    {
           e.preventDefaultAction=true;
           var predicate = new Predicate('Name', 'contains', e.text);  
            predicate = predicate.or('Code', 'contains', e.text);
            var query = new Query();
           //frame the query based on search string with filter type.
             query = (e.text != "") ? query.where(predicate) : query;
           //pass the filter data source, filter query to updateData method.
            e.updateData(this.dataSource, query);
    }

As an alternative, the ComboBox component can also be used instead of AutoComplete to bind both fields and set the allowFiltering property of ComboBox to true.

Also, if you want to trigger the query based on the text field, pass the text field in updateData method as shown below,

e.updateData(this.dataSource, query, {text: “Name”});