Opened 6 years ago

Last modified 3 months ago

#29898 new Cleanup/optimization

Adapt schema editors to operate from model states instead of fake rendered models

Reported by: Simon Charette Owned by:
Component: Migrations Version: dev
Severity: Normal Keywords:
Cc: Markus Holtermann, Simon Charette, Adam Johnson, David Wobrock Triage Stage: Accepted
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no


Rendering models meant to be passed to the schema editor during the migrate phase is the main source of slowdown during the migrate phase of a project.

Adapting schema editors to be able to perform the same operations with model states would be way more efficient as model rendering could always be delayed until it's a necessity such during the application of RunPython operations.

Ref #22608.

Initial work by Markus Holtermann here

Change History (13)

comment:1 by Adam Johnson, 5 years ago

Cc: Adam Johnson added

comment:2 by Sanskar Jaiswal, 4 years ago

Hello everyone. This is the proposal that I submitted for GSoC, which unfortunately wasn't accepted. If it's fine, I would still like to work on this ticket. It would be amazing if I could get the above mentioned proposal reviewed and was given feedback, so that I know what to change and how to proceed.


comment:3 by Manav Agarwal, 3 years ago

Owner: changed from nobody to Manav Agarwal
Status: newassigned

comment:4 by Mariusz Felisiak <felisiak.mariusz@…>, 3 years ago

In d718d990:

Refs #29898 -- Moved django.db.migrations.operations.utils to django.db.migrations.utils.

comment:5 by Mariusz Felisiak <felisiak.mariusz@…>, 3 years ago

In 503ee414:

Refs #29898 -- Moved state_forwards()'s logic from migration operations to ProjectState.

Thanks Simon Charette and Markus Holtermann for reviews.

comment:6 by David Wobrock, 3 years ago

Cc: David Wobrock added

comment:7 by Carlton Gibson <carlton@…>, 3 years ago

In 54a30a7:

Refs #29898 -- Changed ProjectState.real_apps to set.

comment:8 by Mariusz Felisiak <felisiak.mariusz@…>, 3 years ago

In 3e6a3e88:

Refs #29898 -- Refactored out ProjectState.resolve_model_relations()/resolve_model_field_relations() hooks.

comment:9 by Mariusz Felisiak, 3 years ago

Patch needs improvement: unset
Triage Stage: AcceptedReady for checkin

comment:10 by Mariusz Felisiak <felisiak.mariusz@…>, 3 years ago

In 196a99da:

Refs #29898 -- Made ProjectState encapsulate alterations in relations registry.

Thanks Simon Charette and Chris Jerdonek for reviews.

Co-authored-by: Mariusz Felisiak <felisiak.mariusz@…>

comment:11 by Mariusz Felisiak, 3 years ago

Has patch: unset
Triage Stage: Ready for checkinAccepted

comment:12 by GitHub <noreply@…>, 3 years ago

In fa1d7ba5:

Refs #29898 -- Changed fields in ProjectState's relation registry to dict.

comment:13 by Mariusz Felisiak, 3 months ago

Owner: Manav Agarwal removed
Status: assignednew
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