56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
from django.db import models
|
|
|
|
|
|
class CurrentTranslation(models.ForeignObject):
|
|
"""
|
|
Creates virtual relation to the translation with model cache enabled.
|
|
"""
|
|
|
|
# Avoid validation
|
|
requires_unique_target = False
|
|
|
|
def __init__(self, to, on_delete, from_fields, to_fields, **kwargs):
|
|
# Disable reverse relation
|
|
kwargs["related_name"] = "+"
|
|
# Set unique to enable model cache.
|
|
kwargs["unique"] = True
|
|
super().__init__(to, on_delete, from_fields, to_fields, **kwargs)
|
|
|
|
|
|
class ArticleTranslation(models.Model):
|
|
|
|
article = models.ForeignKey("indexes.Article", models.CASCADE)
|
|
article_no_constraint = models.ForeignKey(
|
|
"indexes.Article", models.CASCADE, db_constraint=False, related_name="+"
|
|
)
|
|
language = models.CharField(max_length=10, unique=True)
|
|
content = models.TextField()
|
|
|
|
|
|
class Article(models.Model):
|
|
headline = models.CharField(max_length=100)
|
|
pub_date = models.DateTimeField()
|
|
published = models.BooleanField(default=False)
|
|
|
|
# Add virtual relation to the ArticleTranslation model.
|
|
translation = CurrentTranslation(
|
|
ArticleTranslation, models.CASCADE, ["id"], ["article"]
|
|
)
|
|
|
|
class Meta:
|
|
indexes = [models.Index(fields=["headline", "pub_date"])]
|
|
|
|
|
|
class IndexedArticle(models.Model):
|
|
headline = models.CharField(max_length=100, db_index=True)
|
|
body = models.TextField(db_index=True)
|
|
slug = models.CharField(max_length=40, unique=True)
|
|
|
|
class Meta:
|
|
required_db_features = {"supports_index_on_text_field"}
|
|
|
|
|
|
class IndexedArticle2(models.Model):
|
|
headline = models.CharField(max_length=100)
|
|
body = models.TextField()
|