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extract filters into filter actions and delay their processing time to allow for registration of complex relations, refactoring and optimization, now one join with relations with same aliases are possible

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This commit is contained in:
collerek
2021-01-21 15:55:23 +01:00
parent d6e2c85b79
commit a2834666fc
13 changed files with 425 additions and 325 deletions
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45
tests/test_forward_refs.py
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@ -187,31 +187,44 @@ async def test_m2m_self_forwardref_relation(cleanup):
await billy.friends.add(steve)
billy_check = await Child.objects.select_related(
["friends", "favourite_game", "least_favourite_game",
"friends__favourite_game", "friends__least_favourite_game"]
[
"friends",
"favourite_game",
"least_favourite_game",
"friends__favourite_game",
"friends__least_favourite_game",
]
).get(name="Billy")
assert len(billy_check.friends) == 2
assert billy_check.friends[0].name == "Kate"
assert billy_check.friends[0].favourite_game.name == 'Checkers'
assert billy_check.friends[0].least_favourite_game.name == 'Uno'
assert billy_check.friends[0].favourite_game.name == "Checkers"
assert billy_check.friends[0].least_favourite_game.name == "Uno"
assert billy_check.friends[1].name == "Steve"
assert billy_check.friends[1].favourite_game.name == 'Jenga'
assert billy_check.friends[1].least_favourite_game.name == 'Uno'
assert billy_check.friends[1].favourite_game.name == "Jenga"
assert billy_check.friends[1].least_favourite_game.name == "Uno"
assert billy_check.favourite_game.name == "Uno"
kate_check = await Child.objects.select_related(["also_friends",]).get(
kate_check = await Child.objects.select_related(["also_friends"]).get(
name="Kate"
)
assert len(kate_check.also_friends) == 1
assert kate_check.also_friends[0].name == "Billy"
# TODO: Fix filters with complex prefixes
# billy_check = await Child.objects.select_related(
# ["friends", "favourite_game", "least_favourite_game",
# "friends__favourite_game", "friends__least_favourite_game"]
# ).filter(friends__favourite_game__name="Checkers").get(name="Billy")
# assert len(billy_check.friends) == 1
# assert billy_check.friends[0].name == "Kate"
# assert billy_check.friends[0].favourite_game.name == 'Checkers'
# assert billy_check.friends[0].least_favourite_game.name == 'Uno'
billy_check = (
await Child.objects.select_related(
[
"friends",
"favourite_game",
"least_favourite_game",
"friends__favourite_game",
"friends__least_favourite_game",
]
)
.filter(friends__favourite_game__name="Checkers")
.get(name="Billy")
)
assert len(billy_check.friends) == 1
assert billy_check.friends[0].name == "Kate"
assert billy_check.friends[0].favourite_game.name == "Checkers"
assert billy_check.friends[0].least_favourite_game.name == "Uno"