import re from boards.mdx_neboard import get_parser from boards.models import Post, GlobalId from boards.models.post import REGEX_NOTIFICATION from boards.models.post import REGEX_REPLY, REGEX_GLOBAL_REPLY from boards.models.user import Notification from django.db.models.signals import post_save, pre_save, pre_delete, \ post_delete from django.dispatch import receiver from django.utils import timezone @receiver(post_save, sender=Post) def connect_replies(instance, **kwargs): for reply_number in re.finditer(REGEX_REPLY, instance.get_raw_text()): post_id = reply_number.group(1) try: referenced_post = Post.objects.get(id=post_id) referenced_post.referenced_posts.add(instance) referenced_post.last_edit_time = instance.pub_time referenced_post.build_refmap() referenced_post.save(update_fields=['refmap', 'last_edit_time']) except Post.ObjectDoesNotExist: pass @receiver(post_save, sender=Post) def connect_global_replies(instance, **kwargs): for reply_number in re.finditer(REGEX_GLOBAL_REPLY, instance.get_raw_text()): key_type = reply_number.group(1) key = reply_number.group(2) local_id = reply_number.group(3) try: global_id = GlobalId.objects.get(key_type=key_type, key=key, local_id=local_id) referenced_post = Post.objects.get(global_id=global_id) referenced_post.referenced_posts.add(instance) referenced_post.last_edit_time = instance.pub_time referenced_post.build_refmap() referenced_post.save(update_fields=['refmap', 'last_edit_time']) except (GlobalId.DoesNotExist, Post.DoesNotExist): pass @receiver(post_save, sender=Post) def connect_notifications(instance, **kwargs): for reply_number in re.finditer(REGEX_NOTIFICATION, instance.get_raw_text()): user_name = reply_number.group(1).lower() Notification.objects.get_or_create(name=user_name, post=instance) @receiver(pre_save, sender=Post) def preparse_text(instance, **kwargs): instance._text_rendered = get_parser().parse(instance.get_raw_text()) @receiver(pre_delete, sender=Post) def delete_images(instance, **kwargs): for image in instance.images.all(): image_refs_count = image.post_images.count() if image_refs_count == 1: image.delete() @receiver(pre_delete, sender=Post) def delete_attachments(instance, **kwargs): for attachment in instance.attachments.all(): attachment_refs_count = attachment.attachment_posts.count() if attachment_refs_count == 1: attachment.delete() @receiver(post_delete, sender=Post) def update_thread_on_delete(instance, **kwargs): thread = instance.get_thread() thread.last_edit_time = timezone.now() thread.save() @receiver(post_delete, sender=Post) def delete_global_id(instance, **kwargs): if instance.global_id and instance.global_id.id: instance.global_id.delete()