Adding custom attributes

Define new data fields in a design/interface

A design (or interface) defines a set of attributes that collectively describe a concept, such as a type of asset or task. An attribute can store data or link to items of a particular design/interface.

You can add new attributes to any design/interface in Alloy, providing your user profile has permission to do so!

Add a custom attribute

To add a new attribute to a design/interface:

1. Select the design/interface to view its details in the right panel.

2. Use the tab bar to select the Attributes tab.

3. Select Edit in the action bar and choose Add attribute.

4. In the left panel, choose the type of attribute to add.

5. Fill in the displayed fields as desired and then select Create to finish.

These properties are common to all attribute types (* mandatory):

• Name * - enter a distinct name that clearly identifies the attribute.

• Required - if enabled, the attribute will need to be populated with a value before the item can be saved. It can't be left blank!

• Read-only - if enabled, the attribute can only be populated when creating items. It can't be edited later!

• Unique - if enabled, the attribute won't accept a value that's already stored in the same attribute on another item of this design/interface.

• Default value - the attribute will automatically be populated with this automatically, unless another value is entered (unless Read-only is enabled).

Other attribute types have additional properties. For full details, follow the article links below:

Icon	Type	Description	Input Method
	AQS	Store an AQS query in JSON format	Build a query in the AQS Builder
	Date	Store a date value, e.g. 30 April 2024	Select a value with the calendar picker
	Date Time	Store a date and time value, e.g. 2 July 2025 13:30:00	Select a value with the calendar picker
	Geometry	Store geometry coordinates in GeoJSON format	Draw points, lines or polygons using the Geometry Editor
	JSON	Store JSON code	Type into a fullscreen JSON Editor
	Link	Store the ID of one or more items of a specific design/interface	Select one or more items with the item picker
	Number	Store a number value, e.g. 256, 3.1415	Type directly into the field
	Seasonal	Store a date without a year, e.g. 25th December	Select a value with the calendar picker
	Text	Store a text value, e.g. My friends and I love Alloy and use it every day	Type directly into the field
	Time	Store a time value e.g. 14:20:55	Select a value with the calendar picker
	Yes/No	Store a boolean value, e.g. true or false	Toggle the field to enable/disable it