====== FIELD_TO_JSON (Expression Function) ======

===== Purpose =====
The **Field to JSON** function (FIELD_TO_JSON) takes the input of a field value and converts it to a JSON encoded string.

{{::field_to_json.png?direct&600|}}
===== Parameters =====
The **Field to JSON** function has one input parameter:

==== Field Value ====

Allowed Inputs: [[Field|field]] value

The builder can enter one field value. The builder should use the [[Query Builder]] to choose a field that contains a value. 

===== Output =====

The output of the **Field to JSON** function is a string comprised of the value(s) from a field. Simple fields such as short text will return a double quoted string with the value properly escaped.  For multiple part fields such as [[Field Type - Address|address]], [[Field Type - Telephone|telephone]], or [[Field Type - Multiple Part|multiple part]] the stored value labels will be used as keys and a simple object will be returned. For example an address might look like {"street": "123 Main St","city": "Small Town","state": "PA","zip": "17000"}.  If the multiple value option is turned on for the field then an array of objects will be returned.
===== Example =====

This function is most commonly used when communicating with a third party system that can receive values that are JSON encoded