Django-Tables2 with Checkbox Prefilled Value

Question

I am trying to pre-render checked checkboxes using django-tables2 but cannot successfully do so.

This is my tables.py file. id is the field I need to store as it's used to update the database, setting the selected field to true on a form submission. How can I get the checked parameter to work with this and properly reference the selected field?

class SomeTable(tables.Table):
    add = tables.CheckBoxColumn(accessor='id',checked='selected')

    class Meta:
        model = SomeModel
        template_name = "django_tables2/bootstrap.html"
        fields = ['name','add']

Thanks!

Answer 1

You can achieve this by using Table.render_foo method which overrides the rendering if this column:

from django_tables2.utils import AttributeDict

class SomeTable(tables.Table):
    add = tables.CheckBoxColumn(empty_values=())

    def render_add(self, value, bound_column, record):
        default = {"type": "checkbox", "name": bound_column.name, "value": record.id}
        general = self.attrs.get("input")
        specific = self.attrs.get("td__input")
        attrs = AttributeDict(default, **(specific or general or {}))
        return mark_safe("<input %s/>" % attrs.as_html())

    class Meta:
        model = SomeModel
        template_name = "django_tables2/bootstrap.html"
        fields = ['name','add']