mirror of https://github.com/zulip/zulip.git
69 lines
2.5 KiB
Python
69 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Generated by Django 1.11.24 on 2019-10-07 05:25
|
|
from __future__ import unicode_literals
|
|
|
|
from django.db import migrations
|
|
from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
|
|
from django.db.migrations.state import StateApps
|
|
|
|
import lxml
|
|
|
|
def fix_has_link(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
|
|
Message = apps.get_model('zerver', 'Message')
|
|
total_messages = Message.objects.count()
|
|
print(" Processing messages...")
|
|
|
|
for message in Message.objects.order_by("id"):
|
|
if message.rendered_content == "":
|
|
# There have been bugs in the past that made it possible
|
|
# for a message to have "" as its rendered_content; we
|
|
# need to skip those because lxml won't process them.
|
|
#
|
|
# They should safely already have the correct state
|
|
# has_link=has_image=has_attachment=False.
|
|
continue
|
|
|
|
if message.id % 1000 == 0:
|
|
print("Processed %s / %s" % (message.id, total_messages))
|
|
|
|
# Because we maintain the Attachment table, this should be as
|
|
# simple as just just checking if there's any Attachment
|
|
# objects associated with this message.
|
|
has_attachment = message.attachment_set.exists()
|
|
|
|
# For has_link and has_image, we need to parse the messages.
|
|
# Links are simple -- look for a link in the message.
|
|
lxml_obj = lxml.html.fromstring(message.rendered_content)
|
|
has_link = False
|
|
for link in lxml_obj.xpath("//a"):
|
|
has_link = True
|
|
break
|
|
|
|
# has_image refers to inline image previews, so we just check
|
|
# for the relevant CSS class.
|
|
has_image = False
|
|
for img in lxml_obj.find_class("message_inline_image"):
|
|
has_image = True
|
|
break
|
|
|
|
if (message.has_link == has_link and
|
|
message.has_attachment == has_attachment and
|
|
message.has_image == has_image):
|
|
# No need to spend time with the database if there aren't changes.
|
|
continue
|
|
message.has_image = has_image
|
|
message.has_link = has_link
|
|
message.has_attachment = has_attachment
|
|
message.save(update_fields=['has_link', 'has_attachment', 'has_image'])
|
|
|
|
class Migration(migrations.Migration):
|
|
|
|
dependencies = [
|
|
('zerver', '0256_userprofile_stream_set_recipient_column_values'),
|
|
]
|
|
|
|
operations = [
|
|
migrations.RunPython(fix_has_link,
|
|
reverse_code=migrations.RunPython.noop),
|
|
]
|