add migration script

This commit is contained in:
Gabriel Augendre 2023-05-18 17:37:47 +02:00
parent 37a7f6be15
commit 4fb014ba86

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import os
import re
import shutil
from pathlib import Path
from django.core.management.base import BaseCommand
from attachments.models import Attachment
from articles.models import Article
class Command(BaseCommand):
def handle(self, *_args, **_options) -> None:
base_folder="/app/db/posts"
os.makedirs(base_folder, exist_ok=True)
for article in Article.objects.all():
self.stdout.write(f"Processing {article.title}...")
tags = map(repr, article.tags.all().values_list("name", flat=True))
date = article.published_at or article.created_at
lines = [
"---",
f'title: "{article.title}"',
f"tags: [{', '.join(tags)}]",
f"date: {date.isoformat()}",
f'aliases: ["/{article.slug}"]',
"---",
]
folder = f"{base_folder}/{article.slug}"
os.makedirs(folder, exist_ok=True)
attachments = set(re.findall(r"/attachments/(\d+)", article.content))
attachments = Attachment.objects.filter(id__in=attachments)
content = article.content.replace("\r", "")
content = re.sub(r"!\[([^]]*)]\(/attachments/(\d+)[^)]*\)", r"![\1](\2.__SUFFIX__)", content)
content = re.sub(r"\{:[^}]*}", "", content)
for attachment in attachments:
src = Path(attachment.original_file.path)
dst = (Path(folder) / str(attachment.pk)).with_suffix(src.suffix)
shutil.copy(src, dst)
self.stdout.write(str(dst))
content = content.replace(f"{attachment.pk}.__SUFFIX__", f"{attachment.pk}{src.suffix}")
with open(f"{folder}/index.md", "w") as f:
f.write("\n".join(lines))
f.write("\n")
f.write(content)
f.write("\n")
self.stdout.write(self.style.SUCCESS("Successfully wrote all posts."))