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267
env/lib/python3.10/site-packages/wagtail/actions/create_alias.py
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267
env/lib/python3.10/site-packages/wagtail/actions/create_alias.py
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import logging
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import uuid
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from django.core.exceptions import PermissionDenied
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from wagtail.log_actions import log
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from wagtail.models.copying import _copy, _copy_m2m_relations
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from wagtail.models.i18n import TranslatableMixin
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logger = logging.getLogger("wagtail")
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class CreatePageAliasIntegrityError(RuntimeError):
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"""
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Raised when creating an alias of a page cannot be performed for data integrity reasons.
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"""
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pass
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class CreatePageAliasPermissionError(PermissionDenied):
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"""
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Raised when creating an alias of a page cannot be performed due to insufficient permissions.
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"""
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pass
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class CreatePageAliasAction:
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"""
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Creates an alias of the given page.
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An alias is like a copy, but an alias remains in sync with the original page. They
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are not directly editable and do not have revisions.
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You can convert an alias into a regular page by setting the .alias_of attribute to None
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and creating an initial revision.
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:param recursive: create aliases of the page's subtree, defaults to False
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:type recursive: boolean, optional
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:param parent: The page to create the new alias under
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:type parent: Page, optional
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:param update_slug: The slug of the new alias page, defaults to the slug of the original page
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:type update_slug: string, optional
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:param update_locale: The locale of the new alias page, defaults to the locale of the original page
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:type update_locale: Locale, optional
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:param user: The user who is performing this action. This user would be assigned as the owner of the new page and appear in the audit log
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:type user: User, optional
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:param log_action: Override the log action with a custom one. or pass None to skip logging, defaults to 'wagtail.create_alias'
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:type log_action: string or None, optional
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:param reset_translation_key: Generate new translation_keys for the page and any translatable child objects, defaults to False
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:type reset_translation_key: boolean, optional
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"""
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def __init__(
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self,
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page,
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*,
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recursive=False,
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parent=None,
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update_slug=None,
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update_locale=None,
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user=None,
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log_action="wagtail.create_alias",
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reset_translation_key=True,
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_mpnode_attrs=None,
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):
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self.page = page
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self.recursive = recursive
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self.parent = parent
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self.update_slug = update_slug
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self.update_locale = update_locale
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self.user = user
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self.log_action = log_action
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self.reset_translation_key = reset_translation_key
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self._mpnode_attrs = _mpnode_attrs
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def check(self, skip_permission_checks=False):
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parent = self.parent or self.page.get_parent()
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if self.recursive and (
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parent == self.page or parent.is_descendant_of(self.page)
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):
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raise CreatePageAliasIntegrityError(
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"You cannot copy a tree branch recursively into itself"
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)
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if (
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self.user
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and not skip_permission_checks
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and not parent.permissions_for_user(self.user).can_publish_subpage()
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):
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raise CreatePageAliasPermissionError(
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"You do not have permission to publish a page at the destination"
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)
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def _create_alias(
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self,
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page,
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*,
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recursive,
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parent,
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update_slug,
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update_locale,
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user,
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log_action,
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reset_translation_key,
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_mpnode_attrs,
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):
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specific_page = page.specific
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# FIXME: Switch to the same fields that are excluded from copy
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# We can't do this right now because we can't exclude fields from with_content_json
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# which we use for updating aliases
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exclude_fields = [
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"id",
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"path",
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"depth",
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"numchild",
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"url_path",
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"path",
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"index_entries",
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"postgres_index_entries",
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]
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update_attrs = {
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"alias_of": page,
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# Aliases don't have revisions so the draft title should always match the live title
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"draft_title": page.title,
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# Likewise, an alias page can't have unpublished changes if it's live
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"has_unpublished_changes": not page.live,
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}
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if update_slug:
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update_attrs["slug"] = update_slug
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if update_locale:
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update_attrs["locale"] = update_locale
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if user:
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update_attrs["owner"] = user
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# When we're not copying for translation, we should give the translation_key a new value
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if reset_translation_key:
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update_attrs["translation_key"] = uuid.uuid4()
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alias, child_object_map = _copy(
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specific_page, update_attrs=update_attrs, exclude_fields=exclude_fields
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)
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# Update any translatable child objects
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for child_object in child_object_map.values():
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if isinstance(child_object, TranslatableMixin):
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if update_locale:
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child_object.locale = update_locale
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# When we're not copying for translation,
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# we should give the translation_key a new value for each child object as well.
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if reset_translation_key:
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child_object.translation_key = uuid.uuid4()
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# Save the new page
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if _mpnode_attrs:
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# We've got a tree position already reserved. Perform a quick save.
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alias.path = _mpnode_attrs[0]
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alias.depth = _mpnode_attrs[1]
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alias.save(clean=False)
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else:
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if parent:
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alias = parent.add_child(instance=alias)
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else:
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alias = page.add_sibling(instance=alias)
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_mpnode_attrs = (alias.path, alias.depth)
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_copy_m2m_relations(specific_page, alias, exclude_fields=exclude_fields)
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# Log
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if log_action:
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source_parent = specific_page.get_parent()
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log(
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instance=alias,
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action=log_action,
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user=user,
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data={
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"page": {"id": alias.id, "title": alias.get_admin_display_title()},
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"source": {
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"id": source_parent.id,
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"title": source_parent.specific_deferred.get_admin_display_title(),
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}
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if source_parent
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else None,
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"destination": {
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"id": parent.id,
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"title": parent.specific_deferred.get_admin_display_title(),
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}
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if parent
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else None,
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},
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)
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logger.info(
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'Page alias created: "%s" id=%d from=%d', alias.title, alias.id, page.id
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)
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from wagtail.models import Page, PageViewRestriction
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# Copy child pages
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if recursive:
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numchild = 0
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for child_page in page.get_children().specific().iterator():
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newdepth = _mpnode_attrs[1] + 1
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child_mpnode_attrs = (
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Page._get_path(_mpnode_attrs[0], newdepth, numchild),
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newdepth,
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)
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numchild += 1
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self._create_alias(
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child_page,
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recursive=True,
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parent=alias,
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update_slug=None,
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update_locale=update_locale,
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user=user,
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log_action=log_action,
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reset_translation_key=reset_translation_key,
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_mpnode_attrs=child_mpnode_attrs,
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)
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if numchild > 0:
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alias.numchild = numchild
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alias.save(clean=False, update_fields=["numchild"])
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# Copy across any view restrictions defined directly on the page,
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# unless the destination page already has view restrictions defined
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if parent:
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parent_page_restriction = parent.get_view_restrictions()
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else:
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parent_page_restriction = page.get_parent().get_view_restrictions()
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if not parent_page_restriction.exists():
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for view_restriction in page.view_restrictions.all():
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view_restriction_copy = PageViewRestriction(
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restriction_type=view_restriction.restriction_type,
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password=view_restriction.password,
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page=alias,
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)
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view_restriction_copy.save(user=self.user)
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view_restriction_copy.groups.set(view_restriction.groups.all())
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return alias
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def execute(self, skip_permission_checks=False):
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self.check(skip_permission_checks=skip_permission_checks)
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return self._create_alias(
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self.page,
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recursive=self.recursive,
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parent=self.parent,
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update_slug=self.update_slug,
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update_locale=self.update_locale,
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user=self.user,
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log_action=self.log_action,
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reset_translation_key=self.reset_translation_key,
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_mpnode_attrs=self._mpnode_attrs,
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)
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