(core) Migrate Attachments columns from marshalled blobs to JSON

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Summary: Adds a migration in preparation for future work on tracking and deleting attachments. This includes a `_grist_Attachments.timeDeleted` column which isn't used yet, and changing the storage format of user columns of type `Attachments`. DocStorage now treats Attachments like RefList in general (since they use JSON), which also prompted a tiny bit of refactoring.

Test Plan: Added a migration test case showing the change in format.

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D3352

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This commit is contained in:

Alex Hall

2022-04-01 23:55:59 +02:00

parent 22807fce8e

commit 251d79704b

8 changed files with 42 additions and 16 deletions

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test/fixtures/docs/Hello.grist vendored

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