Add a Priority Enum to Items

Add a Priority Enum to Items

Purchasing wants to rank items by how urgently they should be restocked. In AL that calls for an enum — a first-class object that other extensions can even extend later.

Requirements

1. Create an enum named "Item Priority" with these values (the ordinals are graded; extra values of your own don't hurt):

   Ordinal	Name
   0	Low
   1	Normal
   2	High

2. Create a table extension that extends the Item table and adds a field named "Restock Priority" of type Enum "Item Priority".

3. A freshly created item must default to Normal — use the field's InitValue property.

What the tests check

The grading tests look each value up by name in the enum's Names()/Ordinals() lists and check its ordinal (a missing value fails with a message naming it), look "Restock Priority" up on the Item table by name and require it to be an enum field whose values are those of "Item Priority" — declaring it as an Option field fails. They then write High to an item and read its ordinal back, and create a new item to verify it defaults to Normal.

Learn More

• Extensible enums
• Enum data type
• Enum.Names method
• InitValue property
• Table extension object