Configuration table

[sde1000]

More configuration could be moved into the database. Things that are reasonably static could be cached client-side and a database notification sent by a trigger could be used to invalidate the cache.

The configuration can be a simple key->value store, although it might be useful to split keys into "section" and "name" to make it easier to group keys for any plugins that use this mechanism.

Core config this could be used for:

• Till name
• Telephone
• Address
• Currency symbol
• checkdigit_print
• checkdigit_on_usestock

Xero integration config this could be used for:

• Organisation ID
• Organisation shortcode
• Sales contact ID
• Tracking category name
• Tracking category value
• Discrepancy account
• Start date
• ... most of the things passed to the XeroIntegration constructor

How would we make a nice user interface for this, to make keys discoverable and ensure they are set to appropriate things? Something like the permissions system, where missing keys and default values are added to the database when the till is started up?

[sde1000]

Tillweb interface for editing configuration is in commit f553da65d8605240a813dcf6c4bddbc82e3b84c3