[Convert a foreign key field into clickable links] #python #django

admin.py

def linkify(field_name):
    """
    Converts a foreign key value into clickable links.

    If field_name is 'parent', link text will be str(obj.parent)
    Link will be admin url for the admin url for obj.parent.id:change
    """

    def _linkify(obj):
        linked_obj = getattr(obj, field_name)
        if linked_obj is None:
            return "-"
        app_label = linked_obj._meta.app_label
        model_name = linked_obj._meta.model_name
        view_name = f"admin:{app_label}_{model_name}_change"
        link_url = reverse(view_name, args=[linked_obj.pk])
        return format_html('<a href="{}">{}</a>', link_url, linked_obj)

    _linkify.short_description = field_name  # Sets column name
    return _linkify