feat(next, ui): widget fields (#15700)

## Summary

- Adds `fields` support to dashboard widgets, analogous to how Blocks
work — widgets can now declare configurable fields
- Widget data is editable from a new drawer UI (edit icon) when in
dashboard editing mode
- Full type generation: `WidgetInstance<T>` is now generic with typed
`data` and `width` based on the widget's field schema and min/max width
constraints
- `WidgetServerProps` is generic so widget components receive typed
`widgetData`

## Usage

```ts
import { buildConfig } from 'payload'

export default buildConfig({
  admin: {
    dashboard: {
      widgets: [
        {
          slug: 'sales-summary',
          ComponentPath: './components/SalesSummary.tsx#default',
          fields: [
            { name: 'title', type: 'text' },
            {
              name: 'timeframe',
              type: 'select',
              options: ['daily', 'weekly', 'monthly', 'yearly'],
            },
            { name: 'showTrend', type: 'checkbox' },
          ],
          minWidth: 'small',
          maxWidth: 'medium',
        },
      ],
    },
  },
})
```

```tsx
import type { WidgetServerProps } from 'payload'

import type { SalesSummaryWidget } from '../payload-types'

export default async function SalesSummaryWidgetComponent({
  widgetData,
}: WidgetServerProps<SalesSummaryWidget>) {
  const title = widgetData?.title ?? 'Sales Summary'
  const timeframe = widgetData?.timeframe ?? 'monthly'

  return (
    <div className="card">
      <h3>
        {title} ({timeframe})
      </h3>
    </div>
  )
}
```

## Demo



https://github.com/user-attachments/assets/b24d3635-8635-4d5f-84af-a6dcf801aa4f

Author: GermanJablo

docs/custom-components/dashboard.mdx

@@ -28,20 +28,23 @@ Define widgets in your Payload config using the `admin.dashboard.widgets` proper
 import { buildConfig } from 'payload'
 
 export default buildConfig({
-  // ...
   admin: {
     dashboard: {
       widgets: [
         {
-          slug: 'user-stats',
-          ComponentPath: './components/UserStats.tsx#default',
-          minWidth: 'medium',
-          maxWidth: 'full',
-        },
-        {
-          slug: 'revenue-chart',
-          ComponentPath: './components/RevenueChart.tsx#default',
+          slug: 'sales-summary',
+          ComponentPath: './components/SalesSummary.tsx#default',
+          fields: [
+            { name: 'title', type: 'text' },
+            {
+              name: 'timeframe',
+              type: 'select',
+              options: ['daily', 'weekly', 'monthly', 'yearly'],
+            },
+            { name: 'showTrend', type: 'checkbox' },
+          ],
           minWidth: 'small',
+          maxWidth: 'medium',
         },
       ],
     },
@@ -55,6 +58,7 @@ export default buildConfig({
 | ------------------ | ------------- | -------------------------------------------------------------------- |
 | `slug` \*          | `string`      | Unique identifier for the widget                                     |
 | `ComponentPath` \* | `string`      | Path to the widget component (supports `#` syntax for named exports) |
+| `fields`           | `Field[]`     | Optional widget-specific form fields shown in the edit drawer        |
 | `minWidth`         | `WidgetWidth` | Minimum width the widget can be resized to (default: `'x-small'`)    |
 | `maxWidth`         | `WidgetWidth` | Maximum width the widget can be resized to (default: `'full'`)       |
 
@@ -103,6 +107,14 @@ export default buildConfig({
 
         return [
           { widgetSlug: 'collections', width: 'full' },
+          {
+            widgetSlug: 'sales-summary',
+            data: {
+              timeframe: 'monthly',
+              title: 'Revenue Overview',
+            },
+            width: isAdmin ? 'medium' : 'small',
+          },
           { widgetSlug: 'user-stats', width: isAdmin ? 'medium' : 'full' },
           { widgetSlug: 'revenue-chart', width: 'full' },
         ]
@@ -117,12 +129,38 @@ export default buildConfig({
 
 The `defaultLayout` function receives the request object and should return an array of `WidgetInstance` objects.
 
+If your widget has `fields`, you can type `widgetData` with generated widget types:
+
+```tsx
+import type { WidgetServerProps } from 'payload'
+
+import type { SalesSummaryWidget } from '../payload-types'
+
+export default async function SalesSummaryWidgetComponent({
+  widgetData,
+}: WidgetServerProps<SalesSummaryWidget>) {
+  const title = widgetData?.title ?? 'Sales Summary'
+  const timeframe = widgetData?.timeframe ?? 'monthly'
+
+  return (
+    <div className="card">
+      <h3>
+        {title} ({timeframe})
+      </h3>
+    </div>
+  )
+}
+```
+
 #### WidgetInstance Type
 
-| Property        | Type          | Description                                     |
-| --------------- | ------------- | ----------------------------------------------- |
-| `widgetSlug` \* | `string`      | Slug of the widget to display                   |
-| `width`         | `WidgetWidth` | Initial width of the widget (default: minWidth) |
+| Property        | Type          | Description                                          |
+| --------------- | ------------- | ---------------------------------------------------- |
+| `widgetSlug` \* | `string`      | Slug of the widget to display                        |
+| `data`          | `object`      | Optional widget-specific data passed to `widgetData` |
+| `width`         | `WidgetWidth` | Initial width of the widget (default: minWidth)      |
+
+`width` is constrained by each widget's `minWidth` and `maxWidth` when types are generated.
 
 <Banner type="success">
   **Tip:** Users can customize their dashboard layout, which is saved to their
@@ -145,9 +183,10 @@ Users can customize their dashboard by:
 1. Clicking the dashboard dropdown in the breadcrumb
 2. Selecting "Edit Dashboard"
 3. Adding widgets via the "Add +" button
-4. Resizing widgets using the width dropdown on each widget
-5. Reordering widgets via drag-and-drop
-6. Deleting widgets using the delete button
-7. Saving changes or canceling to revert
+4. Editing widget data (for widgets with `fields`) via the edit button
+5. Resizing widgets using the width dropdown on each widget (if multiple widths are allowed)
+6. Reordering widgets via drag-and-drop
+7. Deleting widgets using the delete button
+8. Saving changes or canceling to revert
 
 Users can also reset their dashboard to the default layout using the "Reset Layout" option.

packages/next/src/views/Dashboard/Default/ModularDashboard/WidgetConfigDrawer.tsx

@@ -0,0 +1,159 @@
+'use client'
+
+import type { ClientWidget, FormState } from 'payload'
+
+import {
+  Drawer,
+  Form,
+  FormSubmit,
+  OperationProvider,
+  RenderFields,
+  ShimmerEffect,
+  useLocale,
+  useModal,
+  useServerFunctions,
+  useTranslation,
+} from '@payloadcms/ui'
+import { abortAndIgnore } from '@payloadcms/ui/shared'
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react'
+import { v4 as uuid } from 'uuid'
+
+import { extractLocaleData, mergeLocaleData } from './utils/localeUtils.js'
+
+type WidgetConfigDrawerProps = {
+  drawerSlug: string
+  onSave: (data: Record<string, unknown>) => void
+  widget: ClientWidget
+  widgetData?: Record<string, unknown>
+}
+
+const EMPTY_WIDGET_PREFERENCES = {
+  fields: {},
+}
+
+export function WidgetConfigDrawer({
+  drawerSlug,
+  onSave,
+  widget,
+  widgetData,
+}: WidgetConfigDrawerProps) {
+  const { closeModal, modalState } = useModal()
+  const { getFormState } = useServerFunctions()
+  const { t } = useTranslation()
+  const locale = useLocale()
+  const localeCode = locale?.code ?? 'en'
+  const onChangeAbortControllerRef = useRef<AbortController>(null)
+
+  const [initialState, setInitialState] = useState<false | FormState | undefined>(false)
+
+  const isOpen = Boolean(modalState?.[drawerSlug]?.isOpen)
+  const formUUID = useMemo(() => uuid(), [])
+  const widgetLabel = useMemo(
+    () => (typeof widget.label === 'string' ? widget.label : widget.slug),
+    [widget.label, widget.slug],
+  )
+  const fields = useMemo(() => widget.fields ?? [], [widget.fields])
+
+  useEffect(() => {
+    if (!isOpen || fields.length === 0) {
+      setInitialState(false)
+      return
+    }
+
+    const controller = new AbortController()
+
+    const loadInitialState = async () => {
+      const localeFilteredData = extractLocaleData(widgetData ?? {}, localeCode, fields)
+
+      const { state } = await getFormState({
+        data: localeFilteredData,
+        docPermissions: {
+          fields: true,
+        },
+        docPreferences: EMPTY_WIDGET_PREFERENCES,
+        locale: localeCode,
+        operation: 'update',
+        renderAllFields: true,
+        schemaPath: widget.slug,
+        signal: controller.signal,
+        widgetSlug: widget.slug,
+      })
+
+      if (state) {
+        setInitialState(state)
+      }
+    }
+
+    void loadInitialState()
+
+    return () => {
+      abortAndIgnore(controller)
+    }
+  }, [fields, getFormState, isOpen, localeCode, widget.slug, widgetData])
+
+  const onChange = useCallback(
+    async ({ formState: prevFormState }: { formState: FormState }) => {
+      abortAndIgnore(onChangeAbortControllerRef.current)
+
+      const controller = new AbortController()
+      onChangeAbortControllerRef.current = controller
+
+      const { state } = await getFormState({
+        docPermissions: {
+          fields: true,
+        },
+        docPreferences: EMPTY_WIDGET_PREFERENCES,
+        formState: prevFormState,
+        operation: 'update',
+        schemaPath: widget.slug,
+        signal: controller.signal,
+        widgetSlug: widget.slug,
+      })
+
+      if (!state) {
+        return prevFormState
+      }
+
+      return state
+    },
+    [getFormState, widget.slug],
+  )
+
+  useEffect(() => {
+    return () => {
+      abortAndIgnore(onChangeAbortControllerRef.current)
+    }
+  }, [])
+
+  return (
+    <Drawer slug={drawerSlug} title={`${t('general:edit')} ${widgetLabel}`}>
+      {initialState === false ? (
+        <ShimmerEffect height="250px" />
+      ) : (
+        <OperationProvider operation="update">
+          <Form
+            fields={fields}
+            initialState={initialState}
+            onChange={[onChange]}
+            onSubmit={(_, data) => {
+              onSave(mergeLocaleData(widgetData ?? {}, data, localeCode, fields))
+              closeModal(drawerSlug)
+            }}
+            uuid={formUUID}
+          >
+            <RenderFields
+              fields={fields}
+              forceRender
+              parentIndexPath=""
+              parentPath=""
+              parentSchemaPath={widget.slug}
+              permissions={true}
+              readOnly={false}
+            />
+            <FormSubmit>{t('fields:saveChanges')}</FormSubmit>
+          </Form>
+        </OperationProvider>
+      )}
+    </Drawer>
+  )
+}

packages/next/src/views/Dashboard/Default/ModularDashboard/WidgetEditControl.tsx

@@ -0,0 +1,59 @@
+'use client'
+
+import type { Data } from 'payload'
+
+import { EditIcon, useConfig, useModal, useTranslation } from '@payloadcms/ui'
+import React, { useId } from 'react'
+
+import { WidgetConfigDrawer } from './WidgetConfigDrawer.js'
+
+const getWidgetSlugFromID = (widgetID: string): string =>
+  widgetID.slice(0, widgetID.lastIndexOf('-'))
+
+export function WidgetEditControl({
+  onSave,
+  widgetData,
+  widgetID,
+}: {
+  onSave: (data: Data) => void
+  widgetData?: Record<string, unknown>
+  widgetID: string
+}) {
+  const { t } = useTranslation()
+  const { openModal } = useModal()
+  const { widgets: configWidgets = [] } = useConfig().config.admin.dashboard ?? {}
+
+  const widgetSlug = getWidgetSlugFromID(widgetID)
+  const widgetConfig = configWidgets.find((widget) => widget.slug === widgetSlug)
+  const hasEditableFields = Boolean(widgetConfig?.fields?.length)
+
+  const drawerID = useId()
+  const drawerSlug = `widget-editor-${drawerID}`
+
+  if (!hasEditableFields) {
+    return null
+  }
+
+  return (
+    <>
+      <button
+        className="widget-wrapper__edit-btn"
+        onClick={() => {
+          openModal(drawerSlug)
+        }}
+        type="button"
+      >
+        <span className="sr-only">
+          {t('general:edit')} {widgetID}
+        </span>
+        <EditIcon />
+      </button>
+      <WidgetConfigDrawer
+        drawerSlug={drawerSlug}
+        onSave={onSave}
+        widget={widgetConfig}
+        widgetData={widgetData}
+      />
+    </>
+  )
+}

packages/next/src/views/Dashboard/Default/ModularDashboard/index.client.tsx

@@ -28,8 +28,10 @@ import { DashboardStepNav } from './DashboardStepNav.js'
 import { useDashboardLayout } from './useDashboardLayout.js'
 import { closestInXAxis } from './utils/collisionDetection.js'
 import { useDashboardSensors } from './utils/sensors.js'
+import { WidgetEditControl } from './WidgetEditControl.js'
 
 export type WidgetItem = {
+  data?: Record<string, unknown>
   id: string
   maxWidth: WidgetWidth
   minWidth: WidgetWidth
@@ -76,6 +78,7 @@ export function ModularDashboardClient({
     resizeWidget,
     saveLayout,
     setIsEditing,
+    updateWidgetData,
   } = useDashboardLayout(initialLayout)
 
   const [activeDragId, setActiveDragId] = useState<null | string>(null)
@@ -166,6 +169,13 @@ export function ModularDashboardClient({
                       className="widget-wrapper__controls"
                       onPointerDown={(e) => e.stopPropagation()}
                     >
+                      <WidgetEditControl
+                        onSave={(data) => {
+                          updateWidgetData(widget.item.id, data)
+                        }}
+                        widgetData={widget.item.data}
+                        widgetID={widget.item.id}
+                      />
                       <WidgetWidthDropdown
                         currentWidth={widget.item.width}
                         maxWidth={widget.item.maxWidth}
@@ -259,12 +269,15 @@ function WidgetWidthDropdown({
 
   const isDisabled = validOptions.length <= 1
 
+  if (isDisabled) {
+    return null
+  }
+
   return (
     <Popup
       button={
         <button
           className="widget-wrapper__size-btn"
-          disabled={isDisabled}
           onPointerDown={(e) => e.stopPropagation()}
           type="button"
         >
@@ -273,7 +286,6 @@ function WidgetWidthDropdown({
         </button>
       }
       buttonType="custom"
-      disabled={isDisabled}
       render={({ close }) => (
         <PopupList.ButtonGroup>
           {validOptions.map((option) => {