Choice fields

A choice field holds a value from a list the field declares, or a list of them. Use it wherever a free string would let a typo become data: an entry type, a shirt size, an area of focus.

{
  "name": "EntryType",
  "displayName": "Entry type",
  "type": "choice",
  "options": [
    { "value": "FUN", "label": "Fun run" },
    { "value": "COMPETE", "label": "Competitive" }
  ]
}

Add "multiple": true for a field that holds a list, such as the sizes a shirt comes in.

What each part is for

• value is what an entry stores, what delivery returns and what a filter matches. It is matched exactly, case included, and should not change once entries hold it.
• label is what an editor sees. Reword it at any time; no entry changes.
• order is display order, and GET /api/content-types returns the options in it.

Rules when the type is defined

• A choice lists at least one option and at most 200. A longer list belongs in its own content type, pointed at with a reference.
• Every option has a value, with no leading or trailing space, at most 100 characters. A label is at most 200.
• Two options whose values differ only in case are refused.
• options and multiple on a field of any other type are refused.

Rules when an entry is saved

Sent	Single choice	Multiple choice
"FUN"	accepted	400, send a list even of one
"fun"	400, names the accepted values	400
["S", "L"]	400, holds one value	accepted
["S", "S"]	400	400, listed more than once
[]	400	accepted when optional, missing when required

Changing the options

PUT /api/content-types/{name}/fields/{field}/options
{ "options": [ { "value": "FUN", "label": "5K fun run" }, ... ], "force": false }

The body is the full list, in order. Rewording a label, reordering and adding an option change no entry. Removing an option that entries of any status still hold is a 409 naming how many; with "force": true it goes ahead, and those entries keep their value and are refused on their next save until an offered value is picked. Needs manage_content_types. Recorded in the audit log as contenttype.field.options.changed.

Changing a field between single and multiple is not supported, because every entry's stored shape would have to change with it.

Delivery

The value is delivered as stored. The OpenAPI document describes a choice as a string enum of the option values, or an array of them with uniqueItems for a multiple choice, so a renderer can map each value to a colour or an icon. Filtering is covered in the delivery API.