Hfrhyu

In QGIS we have a dropdown in order to select a WMS connection configured before:

In a startup script I would like to pre-configure a set of widely used WMS in our organisation. The question is, how can I add an entry to this dropdown using PyQGIS 3 ?

I have been facing the same challenge with a pile of PostGIS connections which can be solved by adding the required keys and values to the settings like

auth_id = 'my_auth' #example
host = '111.222.333.444' #example
port = 5433
db_s = ['postgis_db_1', 'cadastre', 'environment', 'statistics']
set = QSettings()
set.beginGroup('PostgreSQL/connections')
db_exist = set.childGroups()
set.endGroup()
for db in db_s:
 con_name = '0 (authcfg)'.format(db)
 if not con_name in db_exist:
 db_path = 'PostgreSQL/connections/0/'.format(con_name)
 set.setValue(db_path + 'allowGeometrylessTables', True)
 set.setValue(db_path + 'authcfg', auth_id)
 set.setValue(db_path + 'database', db)
 set.setValue(db_path + 'host', host)
 set.setValue(db_path + 'port', port)
 set.setValue(db_path + 'sslmode', 'SslDisable')

I was expecting to be able to do something similar with the WMS connections, but I could not find anything related in the advanced options (or did not look close enough...)

A much closer look (expanding ALL groups in the advanced options) revealed, that it works about the same way as described in the question above for the database connections.

The WMS connections are well hidden in the qgis-group, and obviously split into subgroups WMS (holding the credentials) and wms-connections (holding the url etc.):

With very slight alterations the script above applies well.