Add support for CMDB requests

[SergioBlnc]

Allow to query from tables cmdb_ci*

[rbw]

Hello,

This should be possible already, you need to declare a custom TableModel, using one or more aiosnow.fields. Here's a totally unrelated Issue with some CMDB schemas: #96.

The idea is to ship more declared TableModel models using ServiceNow default schemas, with the library, such as the ones you mention, but right now they doesn't exist - so you'll need to roll your own (which is pretty straightforward), and decide whether you want to share them.

To get started, I suggest you read these:

Model documentation
https://aiosnow.readthedocs.io/en/latest/usage/model/index.html

Query documentation
https://aiosnow.readthedocs.io/en/latest/usage/query/index.html

...and check out the working examples:
https://github.com/rbw/aiosnow/tree/master/examples