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yamdl-playground/yamdl_playground/core/models.py

99 lines
2.8 KiB
Python

from django.db import models
import markdown
from django.utils.functional import cached_property
from django.core.files.storage import storages
from django.core.files import File
from pathlib import Path
import os.path
from django.template import engines
from django_jinja.backend import Origin
from django.conf import settings
class Tag(models.Model):
__yamdl__ = True
slug = models.SlugField(max_length=128, primary_key=True)
file_path = models.CharField(max_length=255)
content = models.TextField()
def get_page_upload_to(instance, filename):
return f"{instance._meta.verbose_name}/{instance.slug}/{os.path.basename(filename)}"
class Page(models.Model):
__yamdl__ = True
_template_cache = {}
title = models.CharField(max_length=255)
raw_content = models.TextField()
runtime_render = models.BooleanField(default=False)
content = models.TextField()
toc = models.JSONField()
slug = models.CharField(max_length=128, unique=True, db_index=True, default=None, null=True)
file_path = models.CharField(max_length=255)
media = models.FileField(null=True, default=None, storage=storages["yamdl"], upload_to=get_page_upload_to)
tags = models.ManyToManyField(Tag)
@classmethod
def from_yaml(cls, **data):
tags = data.pop("tags", None)
md = markdown.Markdown(extensions=["toc"])
content = data.pop("content")
data["raw_content"] = content
data["content"] = md.convert(content)
data["toc"] = {
"html": md.toc,
"tokens": md.toc_tokens
}
if data.get("media"):
source_dir = Path(data["file_path"]).parent
data["media"] = File((source_dir / data["media"]).open("rb"))
instance = cls(**data)
if not instance.runtime_render:
instance.content = instance.render_content()
instance.save()
if tags:
instance.tags.set(tags)
return instance
@cached_property
def content_template(self):
if cached_template := self._template_cache.get(self.slug):
return cached_template
template_name = Path(self.file_path).relative_to(settings.YAMDL_DIRECTORIES[0])
template = engines["jinja2"].from_string(self.content)
template.origin = Origin(name=self.file_path, template_name=template_name)
template.name = template.template.name = template_name
if not self.runtime_render:
self._template_cache[self.slug] = template
return template
def get_context(self):
return {
"page": self
}
def render_content(self, extra_context=None):
if extra_context is None:
extra_context = {}
return self.content_template.render({**self.get_context(), **extra_context})