Django Readonly Select2 widget https://github.com/applegrew/django-select2

widgets.py

# -*- coding: utf-8 -*-
from django_select2.widgets import Select2MultipleWidget


class ReadonlySelect2MultipleWidget(Select2MultipleWidget):
    def render_inner_js_code(self, id_, *args):
        """
        Renders all the JS code required for this widget.

        :return: The rendered JS code which will be later enclosed inside ``<script>`` block.
        :rtype: :py:obj:`unicode`
        """
        options = dict(self.get_options())
        options = self.render_select2_options_code(options, id_)

        # I know how this looks, but setting the "readonly" option to true is not enough :(
        js = u"""
        $("#{id}").select2({options});
        $("#{id}").select2("readonly", true);
        """
        return js.format(id=id_, options=options)