AS-695: convert database to snake case

[wheelsandcogs]

• All models should now exclusively use camelCase for property names.
• All database tables should now exclusively have snake_case column names.

The mapping is performed by knexSnakeCaseMappers, for more information see https://vincit.github.io/objection.js/#snake-case-to-camel-case-conversion.

[joefitter]

Won't this result in the case mappers always being applied? I was thinking more something like:

const mappers = process.env.SNAKE_MAPPER ? knexSnakeCaseMappers() : {};

module.exports = {
  test: {
    ...mappers,
    [settings]
  },
  development: {
    ...mappers,
    [settings]
  }
}

[joefitter]

actually, yours does exactly the same thing in a slightly more verbose way. I didn't see the last 2 lines 🤦‍♂️

[wheelsandcogs]

Ah... well in this case you wouldn't set SNAKE_MAPPER env var when running the migration command, but I've added it to the npm script for seed?

[wheelsandcogs]

But I can use your syntax to tidy it up.

[joefitter]

It would be good if we could use the knexfile here, rather than duplicating settings in 2 places

[wheelsandcogs]

Separate ticket? :D

[joefitter]

nah, it would take longer to write the ticket than to just make the change. But I see what you're saying, stay in your lane 🚗