Kanban is one of the available view types, and it is able to organize items grouped in columns. If we use stages to group the work items, we get a Kanban board. The stage list can be configured to fit the user's specific needs.

Stages should have a folded attribute, meaning that the corresponding column in the Kanban view should be shown folded. Work in progress items are expected to be in an unfolded stage, and terminated items, usually Done and Cancelled, should be in Folded stage.

Each work item has a reference for the stage it is in. It may also have a Kanban State, represented by a traffic signal-like light, and a Priority, represented by a star. The Kanban cards can also have a color attribute, used for their background color.

While the stage represents the current status in the process for the work item, Kanban State provides information about its readiness to advance to the next stage. It is a Selection field, usually named kanban_state. You will normally display it in form views and Kanban views using the kanban_state_selection widget. This field is displayed as follows:

• A grey neutral circle, the default (the normal database value)
• A red Blocked circle (the blocked database value), meaning that there is some reason to retain the work item in the current stage
• A green Ready for the next stage circle (the done database value), meaning that the work item is ready to be pulled for the next stage

The Priority is also a Selection field, and is displayed with the special priority widget in the form and Kanban views. The selection options are expected to be either a string with a number, starting at 0, for normal value (not starred), and other values for starred options.