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add fields method limiting the models columns fetched from db

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collerek
2020-10-05 09:40:41 +02:00
parent 16b8e95975
commit 287b970a09
16 changed files with 209 additions and 38 deletions
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README.md
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@ -241,19 +241,19 @@ await post.categories.add(news)
# or from the other end:
await news.posts.add(post)
# Creating related object from instance:
# Creating columns object from instance:
await post.categories.create(name="Tips")
assert len(await post.categories.all()) == 2
# Many to many relation exposes a list of related models
# Many to many relation exposes a list of columns models
# and an API of the Queryset:
assert news == await post.categories.get(name="News")
# with all Queryset methods - filtering, selecting related, counting etc.
# with all Queryset methods - filtering, selecting columns, counting etc.
await news.posts.filter(title__contains="M2M").all()
await Category.objects.filter(posts__author=guido).get()
# related models of many to many relation can be prefetched
# columns models of many to many relation can be prefetched
news_posts = await news.posts.select_related("author").all()
assert news_posts[0].author == guido