State Machine

Danger

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Inventory Unit States

Sylius itself uses a complex state machine system to manage all states of the business domain. This component has some sensible default states defined in the InventoryUnitInterface.

All new InventoryUnit instances have the state checkout by default, which means they are in the cart and wait for verification.

The following states are defined:

Related constant	State	Description
STATE_CHECKOUT	checkout	Item is in the cart
STATE_ONHOLD	onhold	Item is hold (e.g. waiting for the payment)
STATE_SOLD	sold	Item has been sold and is no longer in the warehouse
STATE_RETURNED	returned	Item has been sold, but returned and is in stock

Tip

Please keep in mind that these states are just default, you can define and use your own. If you use this component with SyliusInventoryBundle and Symfony, you will have full state machine configuration at your disposal.

Inventory Unit Transitions

There are the following order’s transitions by default:

Related constant	Transition
SYLIUS_HOLD	hold
SYLIUS_SELL	sell
SYLIUS_RELEASE	release
SYLIUS_RETURN	return

There is also the default graph name included:

Related constant	Name
GRAPH	sylius_inventory_unit

Note

All of above transitions and the graph are constant fields in the InventoryUnitTransitions class.