Custom Field storage

Last updated on

2 April 2026

The following table provides an overview of the data type options available to build a Custom Field.

Id	Label	Schema type
boolean	Boolean	int
color	Color	varchar
datetime	Date	varchar __timezone: varchar
daterange (^4.x)	Date range	varchar __end: varchar __timezone: varchar __duration: int
duration (^4.x)	Duration	int
decimal	Number (decimal)	numeric
email	E-mail	varchar
entity_reference	Entity reference	int (content entities) varchar_ascii (config entities)
file	File	int
float	Number (float)	float
image	Image	int __alt: varchar __title: varchar __height: int __width: int
integer	Number (integer)	int
link	Link	varchar __title: varchar __options: blob
map	Serialized - Key/Value	blob
map_string	Serialized - Text (plain)	blob
string	Text	varchar
string_long	Text (long)	text
telephone	Telephone number	varchar
time	Time	int
time_range (^4.x)	Time range	int __end: int __duration: int
uri	URI	varchar
uuid	UUID	varchar_ascii
viewfield*	Viewfield	varchar_ascii __display: varchar_ascii __arguments: varchar __items: int

Field types marked with * are provided by sub-modules.
Schema types with additional __ specified are extra columns created alongside the main property.

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