0001_initial.py 文件源码

def url_path_fix(apps, schema_editor):
    # cannot use apps.get_model here
    # because Page instances wouldn't have set_url_path method
    from wagtail.wagtailcore.models import Page

    url_path_fields = get_translation_fields('url_path')
    for page in Page.objects.order_by('path').iterator():
        page.set_url_path(page.get_parent())
        # make sure descendant page url paths are not updated at this point
        # because it would fail
        page.save(update_fields=url_path_fields)