Models
======

The ``coins`` app has one model: the concrete asset type ``Coin``.

Coin
----

Concrete subclass of :class:`~richy.core.models.Item` via Django
multi-table inheritance. Adds a ``coin_id`` field -- a unique
identifier used to disambiguate two coins sharing the same ticker
symbol (see :doc:`/modules/coins/index`).

The ``update_cache`` override invalidates the coin-specific
transaction-performance / profit-performance cache keys and re-warms
them by re-running ``Performance``.

.. autoclass:: richy.coins.models.Coin
   :show-inheritance:

.. automethod:: richy.coins.models.Coin.update_cache