Fix Create, Edit and Show cannot be used outside of a ResourceContextProvider

Closes #5662

Author: fzaninotto

packages/ra-core/src/core/useResourceContext.ts

@@ -5,32 +5,42 @@ import { ResourceContext, ResourceContextValue } from './ResourceContext';
  * Hook to read the resource from the ResourceContext.
  *
  * Must be used within a <ResourceContextProvider> (e.g. as a descendent of <Resource>
- * or any reference related components).
+ * or any reference related components), or called with a resource prop.
  *
- * @returns {ResourceContextValue} The resource
+ * @example
+ *
+ * const ResourceName = (props) => {
+ *   const { resource } = useResourceContext(props);
+ *   const resourceName = translate(`resources.${resource}.name`, {
+ *      smart_count: 1,
+ *      _: inflection.humanize(inflection.singularize(resource)),
+ *   });
+ *   return <>{resourceName}</>;
+ * }
+ *
+ * // use it in a resource context
+ * const MyComponent = () => (
+ *   <ResourceContextProvider value="posts">
+ *     <ResourceName />
+ *     ...
+ *   </ResourceContextProvider>
+ * );
+ *
+ * // override resource via props
+ * const MyComponent = () => (
+ *   <>
+ *     <ResourceName resource="posts"/>
+ *     ...
+ *   </>
+ * );
+ *
+ * @returns {ResourceContextValue} The resource name, e.g. 'posts'
  */
 export const useResourceContext = <
     ResourceInformationsType extends Partial<{ resource: string }>
 >(
     props: ResourceInformationsType
 ): ResourceContextValue => {
     const context = useContext(ResourceContext);
-
-    if (!context) {
-        /**
-         * The element isn't inside a <ResourceContextProvider>
-         *
-         * @deprecated - to be removed in 4.0
-         */
-        if (process.env.NODE_ENV !== 'production') {
-            // Restore this message when ResourceContext is actually used
-            // console.warn(
-            //     "Any react-admin components must be used inside a <ResourceContextProvider>. Relying on props rather than context to get the resource data is deprecated and won't be supported in the next major version of react-admin."
-            // );
-        }
-        // Ignored because resource is often optional (as it is injected) in components which passes the props to this hook
-        return props.resource;
-    }
-
-    return context;
+    return props.resource || context;
 };

packages/ra-ui-materialui/src/detail/Create.tsx

@@ -3,6 +3,7 @@ import { ReactElement } from 'react';
 import PropTypes from 'prop-types';
 import {
     CreateContextProvider,
+    ResourceContextProvider,
     useCheckMinimumRequiredProps,
     useCreateController,
 } from 'ra-core';
@@ -58,11 +59,19 @@ export const Create = (
 ): ReactElement => {
     useCheckMinimumRequiredProps('Create', ['children'], props);
     const controllerProps = useCreateController(props);
-    return (
+    const body = (
         <CreateContextProvider value={controllerProps}>
             <CreateView {...props} {...controllerProps} />
         </CreateContextProvider>
     );
+    return props.resource ? (
+        // support resource override via props
+        <ResourceContextProvider value={props.resource}>
+            {body}
+        </ResourceContextProvider>
+    ) : (
+        body
+    );
 };
 
 Create.propTypes = {
@@ -74,7 +83,7 @@ Create.propTypes = {
     hasCreate: PropTypes.bool,
     hasEdit: PropTypes.bool,
     hasShow: PropTypes.bool,
-    resource: PropTypes.string.isRequired,
+    resource: PropTypes.string,
     title: PropTypes.node,
     record: PropTypes.object,
     hasList: PropTypes.bool,

packages/ra-ui-materialui/src/detail/Edit.tsx

@@ -3,6 +3,7 @@ import { ReactElement } from 'react';
 import PropTypes from 'prop-types';
 import {
     EditContextProvider,
+    ResourceContextProvider,
     useCheckMinimumRequiredProps,
     useEditController,
 } from 'ra-core';
@@ -59,11 +60,19 @@ export const Edit = (
 ): ReactElement => {
     useCheckMinimumRequiredProps('Edit', ['children'], props);
     const controllerProps = useEditController(props);
-    return (
+    const body = (
         <EditContextProvider value={controllerProps}>
             <EditView {...props} {...controllerProps} />
         </EditContextProvider>
     );
+    return props.resource ? (
+        // support resource override via props
+        <ResourceContextProvider value={props.resource}>
+            {body}
+        </ResourceContextProvider>
+    ) : (
+        body
+    );
 };
 
 Edit.propTypes = {

packages/ra-ui-materialui/src/detail/Show.tsx

@@ -3,6 +3,7 @@ import { ReactElement } from 'react';
 import PropTypes from 'prop-types';
 import {
     ShowContextProvider,
+    ResourceContextProvider,
     useCheckMinimumRequiredProps,
     useShowController,
 } from 'ra-core';
@@ -58,11 +59,19 @@ export const Show = (
 ): ReactElement => {
     useCheckMinimumRequiredProps('Show', ['children'], props);
     const controllerProps = useShowController(props);
-    return (
+    const body = (
         <ShowContextProvider value={controllerProps}>
             <ShowView {...props} {...controllerProps} />
         </ShowContextProvider>
     );
+    return props.resource ? (
+        // support resource override via props
+        <ResourceContextProvider value={props.resource}>
+            {body}
+        </ResourceContextProvider>
+    ) : (
+        body
+    );
 };
 
 Show.propTypes = {