✨ (admin) allow to overwrite parent values with automatic defaults

[sophiamersmann]

Background

Grapher sometimes assigns meaning to config values being undefined. For example, if timelineMaxTime is undefined, Grapher uses the latest year in the data. This is problematic in an inheritance model since undefined can't be used to overwrite values. As a result, it's currently not possible to overwrite custom parent values with the automatic-default option for the following properties:

• timelineMinTime and timelineMaxTime
• yAxis.min, yAxis.max, xAxis.min, xAxis.max
• baseColorScheme
• yAxis.label and xAxis.label
• map.columnSlug

Summary

Instead of relying on undefined to have a value derived from the data, this PR adds a new value, like "auto" or "latest", to make the behaviour explicit.

This is done for:

• timelineMinTime and timelineMaxTime ("earliest" and "latest" respectively)
• yAxis.min, yAxis.max, xAxis.min, xAxis.max ("auto")

But not for:

• map.columnSlug
  • Unlikely that someone wishes to restore the default behaviour if the parent specifies a better default
• yAxis.label and xAxis.label
  • Unlikely that someone wants to restore the default label when a parent specifies a better default (overwriting with another custom label is of course possible)
• baseColorScheme
  • I'm not sure if there is a demand to revert back to the default, and since the default is just a particular scheme picked for you, an author can pick that scheme manually as well.

Other changes

• Tightens the UI around the link/unlink button
  • If currently linked, the unlink button is disabled
  • Adds a more obvious tooltip that explains the behaviour of the link/unlink button
• Also adds the link/unlink button to the "Note" field

[sophiamersmann]

• ✨ (admin) allow to overwrite parent values with automatic defaults #3976 👈
• master

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[owidbot]

Quick links (staging server):

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Login: ssh owid@staging-site-admin-overwrites

• Site-screenshots: https://github.com/owid/site-screenshots/compare/admin-overwrites
• SVG tester: https://github.com/owid/owid-grapher-svgs/compare/admin-overwrites

SVG tester:

Number of differences (default views): 0 ✅
Number of differences (all views): 0 ✅

Edited: 2024-09-19 08:37:52 UTC
Execution time: 1.20 seconds