Hi selvi

You could do it like:

var form_common = require('web.form_common');
var original_get_search_result = form_common.CompletionFieldMixin.get_search_result;
form_common.CompletionFieldMixin.get_search_result = function(search_val) {
    //call the original function if you need too like:
    //original_get_search_result(search_val);
    ... rest of the code
};

This way of extend it is because the CompletionFieldMixin is an Object created like

var CompletionFieldMixin = {
    ...
}

Hi Axel,

I tried your code but it doesn't seems work..