feat: default tab labels from name (#3129)

docs/fields/tabs.mdx

@@ -25,14 +25,14 @@ _Tabs field type used to separate Hero fields from Page Layout_
 
 #### Tab-specific Config
 
-Each tab has its own required `label` and `fields` array. You can also optionally pass a `description` to render within each individual tab.
+Each tab must have either a `name` or `label` and the required `fields` array. You can also optionally pass a `description` to render within each individual tab.
 
-| Option              | Description                                                                                                                                                                                                  |
-| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
-| **`name`**          | An optional property name to be used when stored and retrieved from the database. [More](/docs/fields/overview#field-names)                                                                                  |
-| **`label`** \*      | The label to render on the tab itself.                                                                                                                                                                       |
-| **`fields`** \*     | The fields to render within this tab.                                                                                                                                                                        |
-| **`description`**   | Optionally render a description within this tab to describe the contents of the tab itself.                                                                                                                  |
+| Option           | Description                                                                                                                                                                                                  |
+| ---------------- |--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| **`name`**       | Groups field data into an object when stored and retrieved from the database. [More](/docs/fields/overview#field-names)                                                                                      |
+| **`label`**      | The label to render on the tab itself. Required when name is undefined, defaults to name converted to words.                                                                                                 |
+| **`fields`** \*  | The fields to render within this tab.                                                                                                                                                                        |
+| **`description`** | Optionally render a description within this tab to describe the contents of the tab itself.                                                                                                                  |
 | **`interfaceName`** | Create a top level, reusable [Typescript interface](/docs/typescript/generating-types#custom-field-interfaces) & [GraphQL type](/docs/graphql/graphql-schema#custom-field-schemas). (`name` must be present) |
 
 _\* An asterisk denotes that a property is required._

src/fields/config/sanitize.ts

@@ -1,9 +1,9 @@
 import { formatLabels, toWords } from '../../utilities/formatLabels';
-import { MissingFieldType, InvalidFieldRelationship, InvalidFieldName } from '../../errors';
+import { InvalidFieldName, InvalidFieldRelationship, MissingFieldType } from '../../errors';
 import { baseBlockFields } from '../baseFields/baseBlockFields';
 import validations from '../validations';
 import { baseIDField } from '../baseFields/baseIDField';
-import { Field, fieldAffectsData } from './types';
+import { Field, fieldAffectsData, tabHasName } from './types';
 import withCondition from '../../admin/components/forms/withCondition';
 
 const sanitizeFields = (fields: Field[], validRelationships: string[]): Field[] => {
@@ -87,6 +87,9 @@ const sanitizeFields = (fields: Field[], validRelationships: string[]): Field[]
     if (field.type === 'tabs') {
       field.tabs = field.tabs.map((tab) => {
         const unsanitizedTab = { ...tab };
+        if (tabHasName(tab) && typeof tab.label === 'undefined') {
+          unsanitizedTab.label = toWords(tab.name);
+        }
         unsanitizedTab.fields = sanitizeFields(tab.fields, validRelationships);
         return unsanitizedTab;
       });

src/fields/config/schema.ts

@@ -224,13 +224,14 @@ export const collapsible = baseField.keys({
 });
 
 const tab = baseField.keys({
-  name: joi.string().when('localized', { is: joi.exist(), then: joi.required() }),
+  name: joi.string()
+    .when('localized', { is: joi.exist(), then: joi.required() }),
   localized: joi.boolean(),
   interfaceName: joi.string().when('name', { not: joi.exist(), then: joi.forbidden() }),
   label: joi.alternatives().try(
     joi.string(),
     joi.object().pattern(joi.string(), [joi.string()]),
-  ).required(),
+  ).when('name', { is: joi.not(), then: joi.required() }),
   fields: joi.array().items(joi.link('#field')).required(),
   description: joi.alternatives().try(
     joi.string(),

test/fields/collections/Tabs/index.ts

@@ -135,7 +135,6 @@ const TabsFields: CollectionConfig = {
         },
         {
           name: 'namedTabWithDefaultValue',
-          label: 'Tab with Default Value',
           description: 'This tab has a name, which should namespace the contained fields.',
           fields: [
             {
@@ -159,7 +158,6 @@ const TabsFields: CollectionConfig = {
         },
         {
           name: 'accessControlTab',
-          label: 'Access Control Tab',
           access: {
             read: () => false,
           },