revbank/UPGRADING.md

(2021-12-02) RevBank 3.2

Update your custom plugins!

Test your custom plugins. If they don't emit warnings about floating point numbers, or if you don't care about warnings, then no changes are required.

RevBank no longer uses floating point numbers for amounts. Instead, there are now RevBank::Amount objects, which internally store an integer number of cents, but externally stringify to formatted numbers with 2 decimal places.

To create such an object, use parse_amount as per usual.

Formatting no longer requires sprintf %.2f, just use %s instead.

Using an amount as a floating point number will now emit warnings in some cases, to alert you to the fact that this may result in rounding errors. To convert an amount to a floating point number without a warning, use $amount->float. To convert a floating point number to an amount without a warning, use RevBank::Amount->new_from_float($float).

Most hard-coded uses of floats are safe enough and transparently supported through overloaded operators, but if there are more than 2 decimal places, the operation will be disallowed.

(2019-11-05) RevBank 3

The following features were removed:

• plugins nyan and game

  Please remove these from your revbank.plugins configuration file.

• creating new accounts with deposit

  Use adduser instead.

Update your custom plugins!

Method $cart->is_multi_user

Method has been removed.

Method $cart->delete($user, $index)

Method has been removed.

Delete a specific entry, as returned by $cart->entries, instead.

Hooks add and added

Use add_entry and added_entry instead, which gets a RevBank::Cart::Entry object, instead.

Note that the new "entries", unlike old "items", can have a quantity other than 1.

Method $cart->add(undef, ...)

Method $cart->add($user, ...)

The add method now always creates an entry from the perspective of the current user, and returns a RevBank::Cart::Entry object to which "contras" can be added with add_contra. The contras can be used for counteracting a value with an operation on another account.

To upgrade a plugin that does a single add with undef as the first argument, simply remove the undef, . When multiple items were added that belong together, consider using add_contra for the subsequent lines; see the take and give plugins for examples.

Method $cart->select_items

Use entries instead, which takes the same kind of argument. Note that entries work slightly differently: they can have a quantity and attached contra entries. Attributes are now accessed through the has_attribute and attribute methods, instead of directly manipulating the hash.