Using restframework-gis OpenAPI schema creation

[Christiaanvv]

Included the new restframework-gis OpenAPI schema support, see openwisp/django-rest-framework-gis#223

[Christiaanvv]

@tfranzel I tried to include openwisp/django-rest-framework-gis#223 into this project. It is a very simple solution but there are a few problems with the current approach where I need your help with:

• Only include restframework-gis when a GeometryField or GeoFeatureModelListSerializer is encountered
• Only include restframework-gis if it is installed.
• Include it in other files than openapi.py
• Write tests for this approach.

Since I am fairly new to contributing to a project, I need some guidance. Can you help me?

[tfranzel]

hi @Christiaanvv, there are a bunch of things you need to know before attempting to do this. you need to read up these things:

• django-rest-framework-gis #31 (comment)
• https://drf-spectacular.readthedocs.io/en/latest/customization.html#step-5-extensions
• and in general https://drf-spectacular.readthedocs.io/en/latest/customization.html
• WIP: Add drf-gis fields #38
• GIS fixes for #38 #67
• testing contrib packages in general as shown in GIS fixes for #38 #67

#67 basically contains all the mechanics necessary, but with a gis implementation independent of openwisp/django-rest-framework-gis#223. easiest way is to switch out the gis part in #67.

it is still an open question which approach is the better one.

[tfranzel]

this PR got superseded by #746. discussion&feedback continues there.