[SHARE-1051] Simplify and speed up 2.15 migrations

CenterForOpenScience / SHARE

SHARE is building a free, open, data set about research and scholarly activities across their life cycle.

http://share-research.readthedocs.io/en/latest/index.html

Apache License 2.0

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[SHARE-1051] Simplify and speed up 2.15 migrations #741

Closed aaxelb closed 6 years ago

aaxelb commented 6 years ago

Consolidate new migrations into one (if anyone has a local install of 2.15, this could be annoying)
Don't change table/column names in the database, just rename django model/field names and point them at the same table/column as before.
Let go of non-null RawDatum.datestamp, we don't actually need it. Still default to now when harvesting or using Ingester (e.g. push), but leave existing data as-is.

https://openscience.atlassian.net/browse/SHARE-1051

coveralls commented 6 years ago

Coverage decreased (-0.009%) to 78.892% when pulling 4689eeb2431e88d3ffd832961e747d59abeb3afb on aaxelb:SHARE-1051--speedy-migrations into 0fbb60a79248d7cb3fa44909501a2072131dd6a2 on CenterForOpenScience:future-release/2.15.0.