ImageChooserField does not work in nested forms.

After this feature we are able to create nested related objects in the same form. But when we use ImageChooserField at the second level or deeper - Wagtail shows regular select instead of ImageChooserField. On the screenshot, ImageChooserField is setted for the logo field.

[MaziyarMK]

Got SnippetChooserPanel working with this:

from wagtail.admin.edit_handlers import InlinePanel as BaseInlinePanel

class InlinePanel(BaseInlinePanel):
    def widget_overrides(self):
        widgets = {}
        child_edit_handler = self.get_child_edit_handler()
        for handler_class in child_edit_handler.children:
            widgets.update(handler_class.widget_overrides())
        widget_overrides = {self.relation_name: widgets}
        return widget_overrides

Basically the nested-second-layer InlinePanel wasn’t providing the Page model with any widgets, while the first layer InlinePanel was doing so. Haven’t tested it with different combinations (third layer, all layers having custom panels, etc).

[brylie]

The suggestion above for creating a custom InlinePanel worked in my case, as such:

from wagtail.admin.edit_handlers import InlinePanel


class NestedInlinePanel(InlinePanel):
    def widget_overrides(self):
        widgets = {}

        child_edit_handler = self.get_child_edit_handler()

        for handler_class in child_edit_handler.children:
            widgets.update(handler_class.widget_overrides())

        widget_overrides = {self.relation_name: widgets}

        return widget_overrides

One thing of note is that the title and help_text don’t work with the custom NestedInlinePanel.

NestedInlinePanel(
    "authors",
    # Heading and help text are not rendered in the form UI
    heading="Authors",
    help_text="Select one or more authors who contributed to this article",
 ),