id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
37321	Document the effect of setting BaseSpatialField.srid to -1	Jacob Walls	Yassin Bahri	"For spatial model fields, setting a -1 `srid` has a special meaning, and it's tested:

{{{#!py
class MinusOneSRID(models.Model):
    geom = models.PointField(srid=-1)  # Minus one SRID.
}}}

However, the documentation says nothing about this special meaning. It was added in #7579.

I'm suggesting we should document its effect (no SRID transform will be attempted, assigned geometries/rasters will lose any explicit srid). This would have been helpful when responding to a [https://forum.djangoproject.com/t/rasterfield-with-srid-none-dont-force-transform/28745 forum post] where a user tried to set `srid=None`, which doesn't work."	Bug	assigned	Documentation	6.1	Normal				Accepted	0	0	0	0	0	0