Description

Issue 1222

Possibility to add a --reversed flag, which will list the history from base to head
When doing alembic history -R or alembic history --reversed

Checklist

This pull request is:

• A documentation / typographical error fix
  • Good to go, no issue or tests are needed
• A short code fix
  • please include the issue number, and create an issue if none exists, which
    must include a complete example of the issue. one line code fixes without an
    issue and demonstration will not be accepted.
  • Please include: Fixes: #<issue number> in the commit message
  • please include tests. one line code fixes without tests will not be accepted.
• A new feature implementation
  • No tests added

For example :

alembic history 

Outputs :

7acb31ef52a9 -> af14eef641e8 (head), third migration
efe3dda2d3da -> 7acb31ef52a9, second migration
<base> -> efe3dda2d3da, first migration

For example :

alembic history --reversed

Output :

<base> -> efe3dda2d3da, first migration
efe3dda2d3da -> 7acb31ef52a9, second migration
7acb31ef52a9 -> af14eef641e8 (head), third migration

For example :

alembic history -h

Output :

usage: alembic history [-h] [-r REV_RANGE] [-v] [-i] [-R]

options:
  -h, --help            show this help message and exit
  -r, --rev-range REV_RANGE
                        Specify a revision range; format is [start]:[end]
  -v, --verbose         Use more verbose output
  -i, --indicate-current
                        Indicate the current revision
  -R, --reversed        Show the history in the reversed order

Have a nice day!