Fix AttributeError on postcommit when db-create adds non-system CWSource entities
In this case, `Repository.add_source` is called from an operation, not from
`Repository.init_sources_from_database`, thus the attribute `sources_by_eid`
does not exist.
Closes #16251078.
CubicWeb semantic web framework
===============================
CubicWeb is a entities / relations based knowledge management system
developped at Logilab.
This package contains:
- a repository server
- a RQL command line client to the repository
- an adaptative modpython interface to the server
- a bunch of other management tools
Install
-------
More details at https://docs.cubicweb.org/book/admin/setup
Getting started
---------------
Execute::
apt-get install cubicweb cubicweb-dev cubicweb-blog
cubicweb-ctl create blog myblog
cubicweb-ctl start -D myblog
sensible-browser http://localhost:8080/
Details at https://docs.cubicweb.org/tutorials/base/blog-in-five-minutes
Documentation
-------------
Look in the doc/ subdirectory or read https://docs.cubicweb.org/
CubicWeb includes the Entypo pictograms by Daniel Bruce — www.entypo.com