WIP custom cards block

cards-block.py

from wagtail.wagtailcore.blocks import (
    ListBlock,
    StructBlock,
    CharBlock,
    TextBlock,
    PageChooserBlock
)
from wagtail.wagtailimages.blocks import ImageChooserBlock


class CardsBlock(ListBlock):
    def __init__(self, **kwargs):
        child_block = StructBlock([
            ('image', ImageChooserBlock(required=False)),
            ('title', CharBlock()),
            ('text', TextBlock()),
            ('link', PageChooserBlock(required=False)),
        ])
        super(CardsBlock, self).__init__(child_block, **kwargs)