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Allow enum discriminator columns #10288

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merged 1 commit into from
Dec 13, 2022
Merged

Allow enum discriminator columns #10288

merged 1 commit into from
Dec 13, 2022

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michnovka
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@michnovka michnovka commented Dec 11, 2022 •
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In all hydrators, discriminator columns are for all purposes converted to string using explicit (string) conversion. This is not allowed with PHP enums. Therefore, I added code which checks whether the variable is a BackedEnum instance and if so, instead its ->value is used (which can be cast to string without issues as its a scalar)

The test builds upon #6141 which allowed objects to be discriminator column values. This fix further extends the use-case to allow PHP enums also.

@michnovka michnovka force-pushed the 2.13.x-enum-discriminator-columns branch from 1471a77 to 0ef8084 Compare December 11, 2022 16:51
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@greg0ire please review

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greg0ire reviewed Dec 11, 2022
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Kudos on the great commit message, it makes it really easier to understand what's happening here.

Any way you could test the scenarios Codecov is pointing at?

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I'm a bit hesitant to treat this as a bugfix. Let's target 2.14, please.

@derrabus derrabus changed the base branch from 2.13.x to 2.14.x December 11, 2022 18:50
@michnovka michnovka force-pushed the 2.13.x-enum-discriminator-columns branch 3 times, most recently from af1350b to c1c089a Compare December 11, 2022 19:04
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@derrabus I have rebased to 2.14.x
@greg0ire I have cleaned up the code. Turns out the only problematic place was ObjectHydrator, the other Hydrators do not convert discriminator into enum at the time when they work with it. Ive added test for SimpleHydrator as well to prove this point and throw an exception should this behavior change in the future

greg0ire
greg0ire previously approved these changes Dec 11, 2022
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@derrabus derrabus added this to the 2.14.0 milestone Dec 12, 2022
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derrabus requested changes Dec 12, 2022
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Blocking the merge until #10288 (comment) is resolved.

@derrabus derrabus removed this from the 2.14.0 milestone Dec 12, 2022
@michnovka michnovka force-pushed the 2.13.x-enum-discriminator-columns branch 2 times, most recently from b9cb653 to 8fb653e Compare December 12, 2022 21:19
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@derrabus I have implemented what you asked for.

enumType is now added to DiscriminatorColumn, so it can (and is) properly hydrated.

I have added tests to MappingDriverTestCase for the new option as well as specific Functional tests which tests both custom type using enum and "native doctrine" enumType.

please review

@michnovka michnovka force-pushed the 2.13.x-enum-discriminator-columns branch 3 times, most recently from 210a27a to ef0ff51 Compare December 13, 2022 09:40
@derrabus derrabus closed this Dec 13, 2022
@derrabus derrabus reopened this Dec 13, 2022
@michnovka
Add support for enum discriminator columns
497ee16 
This commit adds enumType option to DiscriminatorColumn as well as support for custom DBAL types which use PHP enums for PHP values.
Previously, the enumType option was completely missing, but also even using custom types that used PHP enums would end up in exception because ObjectHydrator would try to convert enums to string using (string) explicit conversion.
Apart from hydrators, ClassMetadataBuilder was extended to support specifying enumType.
Documentation was updated.
@michnovka michnovka force-pushed the 2.13.x-enum-discriminator-columns branch from b2211c6 to 497ee16 Compare December 13, 2022 10:15
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I am happy with the PR now, I think it covers everything:

  • add support to all mapping drivers
  • add support to ClassMetadataBuilder
  • add support into hydrators
  • add tests for everything newly implemented
  • add and fix documentation
  • squash commits and add a single descriptive commit message

please review @greg0ire @derrabus

@derrabus derrabus added this to the 2.14.0 milestone Dec 13, 2022
@greg0ire greg0ire merged commit 15058ca into doctrine:2.14.x Dec 13, 2022
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Thanks @michnovka !

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please merge into 3.x so that I can do the cleanup. thanks!

@github-actions github-actions bot mentioned this pull request Dec 19, 2022
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@greg0ire greg0ire mentioned this pull request Mar 29, 2023
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@derrabus derrabus derrabus approved these changes

@greg0ire greg0ire Awaiting requested review from greg0ire

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@michnovka @derrabus @greg0ire