Introduce SourceContext

docs/Inputs.md

@@ -534,12 +534,7 @@ const OrderEdit = () => (
 );
 ```
 
-**Tip**: When using a `FormDataConsumer` inside an `ArrayInput`, the `FormDataConsumer` will provide two additional properties to its children function:
-
-- `scopedFormData`: an object containing the current values of the currently rendered item from the `ArrayInput`
-- `getSource`: a function that translates the source into a valid one for the `ArrayInput`
-
-And here is an example usage for `getSource` inside `<ArrayInput>`:
+**Tip**: When used inside an `ArrayInput`, `<FormDataConsumer>` provides one additional property to its child function called `scopedFormData`. It's an object containing the current values of the *currently rendered item*. This allows you to create dependencies between inputs inside a `<SimpleFormIterator>`, as in the following example:
 
 ```tsx
 import { FormDataConsumer } from 'react-admin';
@@ -554,12 +549,11 @@ const PostEdit = () => (
                         {({
                             formData, // The whole form data
                             scopedFormData, // The data for this item of the ArrayInput
-                            getSource, // A function to get the valid source inside an ArrayInput
                             ...rest
                         }) =>
-                            scopedFormData && getSource && scopedFormData.name ? (
+                            scopedFormData && scopedFormData.name ? (
                                 <SelectInput
-                                    source={getSource('role')} // Will translate to "authors[0].role"
+                                    source="role" // Will translate to "authors[0].role"
                                     choices={[{ id: 1, name: 'Head Writer' }, { id: 2, name: 'Co-Writer' }]}
                                     {...rest}
                                 />
@@ -573,7 +567,7 @@ const PostEdit = () => (
 );
 ```
 
-**Tip:** TypeScript users will notice that `scopedFormData` and `getSource` are typed as optional parameters. This is because the `<FormDataConsumer>` component can be used outside of an `<ArrayInput>` and in that case, these parameters will be `undefined`. If you are inside an `<ArrayInput>`, you can safely assume that these parameters will be defined.
+**Tip:** TypeScript users will notice that `scopedFormData` is typed as an optional parameter. This is because the `<FormDataConsumer>` component can be used outside of an `<ArrayInput>` and in that case, this parameter will be `undefined`. If you are inside an `<ArrayInput>`, you can safely assume that this parameter will be defined.
 
 ## Hiding Inputs Based On Other Inputs
 

docs/SimpleFormIterator.md

@@ -114,12 +114,7 @@ A list of Input elements, that will be rendered on each row.
 
 By default, `<SimpleFormIterator>` renders one input per line, but they can be displayed inline with the `inline` prop.
 
-`<SimpleFormIterator>` also accepts `<FormDataConsumer>` as child. When used inside a form iterator, `<FormDataConsumer>` provides two additional properties to its children function:
-
-- `scopedFormData`: an object containing the current values of the currently rendered item from the ArrayInput
-- `getSource`: a function that translates the source into a valid one for the ArrayInput
-
-And here is an example usage for `getSource` inside `<ArrayInput>`:
+`<SimpleFormIterator>` also accepts `<FormDataConsumer>` as child. In this case, `<FormDataConsumer>` provides one additional property to its child function called `scopedFormData`. It's an object containing the current values of the *currently rendered item*. This allows you to create dependencies between inputs inside a `<SimpleFormIterator>`, as in the following example:
 
 ```jsx
 import { FormDataConsumer } from 'react-admin';
@@ -134,14 +129,11 @@ const PostEdit = () => (
                         {({
                             formData, // The whole form data
                             scopedFormData, // The data for this item of the ArrayInput
-                            getSource, // A function to get the valid source inside an ArrayInput
-                            ...rest
                         }) =>
                             scopedFormData && scopedFormData.name ? (
                                 <SelectInput
-                                    source={getSource('role')} // Will translate to "authors[0].role"
+                                    source="role" // Will translate to "authors[0].role"
                                     choices={[{ id: 1, name: 'Head Writer' }, { id: 2, name: 'Co-Writer' }]}
-                                    {...rest}
                                 />
                             ) : null
                         }
@@ -153,7 +145,7 @@ const PostEdit = () => (
 );
 ```
 
-**Tip:** TypeScript users will notice that `scopedFormData` and `getSource` are typed as optional parameters. This is because the `<FormDataConsumer>` component can be used outside of a `<SimpleFormIterator>` and in that case, these parameters will be `undefined`. If you are inside a `<SimpleFormIterator>`, you can safely assume that these parameters will be defined.
+**Tip:** TypeScript users will notice that `scopedFormData` is typed as an optional parameter. This is because the `<FormDataConsumer>` component can be used outside of an `<ArrayInput>` and in that case, this parameter will be `undefined`. If you are inside an `<ArrayInput>`, you can safely assume that this parameter will be defined.
 
 **Note**: `<SimpleFormIterator>` only accepts `Input` components as children. If you want to use some `Fields` instead, you have to use a `<FormDataConsumer>`, as follows:
 

docs/Upgrade.md

@@ -204,6 +204,56 @@ const CompanyField = () => (
 ```
 {% endraw %}
 
+## `<SimpleFormIterator>` no longer clones its children
+
+We've changed the implementation of `<SimpleFormIterator>`, the companion child of `<ArrayInput>`. This internal change is mostly backwards compatible, with one exception: defining the `disabled` prop on the `<ArrayInput>` component does not disable the children inputs anymore. If you relied on this behavior, you now have to specify the `disabled` prop on each input:
+
+```diff
+<ArrayInput disabled={someCondition}>
+   <SimpleFormIterator>
+-      <TextInput source="lastName" />
+-      <TextInput source="firstName" />
++      <TextInput source="lastName" disabled={someCondition} />
++      <TextInput source="firstName" disabled={someCondition} />
+   </SimpleFormIterator>
+</ArrayInput>
+```
+
+## `<FormDataConsumer>` no longer passes a `getSource` function
+
+When using `<FormDataConsumer>` inside an `<ArrayInput>`, the child function no longer receives a `getSource` callback. We've made all Input components able to work seamlessly inside an `<ArrayInput>`, so it's no longer necessary to transform their source with `getSource`:
+
+```diff
+import { Edit, SimpleForm, TextInput, ArrayInput, SelectInput, FormDataConsumer } from 'react-admin';
+
+const PostEdit = () => (
+    <Edit>
+        <SimpleForm>
+            <ArrayInput source="authors">
+                <SimpleFormIterator>
+                    <TextInput source="name" />
+                    <FormDataConsumer>
+                        {({
+                            formData, // The whole form data
+                            scopedFormData, // The data for this item of the ArrayInput
+-                           getSource,
+                        }) =>
+                            scopedFormData && getSource && scopedFormData.name ? (
+                                <SelectInput
+-                                    source={getSource('role')}
++                                    source="role" // Will translate to "authors[0].role"
+                                    choices={[{ id: 1, name: 'Head Writer' }, { id: 2, name: 'Co-Writer' }]}
+                                />
+                            ) : null
+                        }
+                    </FormDataConsumer>
+                </SimpleFormIterator>
+            </ArrayInput>
+        </SimpleForm>
+    </Edit>
+);
+```
+
 ## Upgrading to v4
 
 If you are on react-admin v3, follow the [Upgrading to v4](https://marmelab.com/react-admin/doc/4.16/Upgrade.html) guide before upgrading to v5. 

examples/simple/src/posts/PostCreate.tsx

@@ -163,10 +163,10 @@ const PostCreate = () => {
                                 />
                             </ReferenceInput>
                             <FormDataConsumer>
-                                {({ scopedFormData, getSource, ...rest }) =>
+                                {({ scopedFormData }) =>
                                     scopedFormData && scopedFormData.user_id ? (
                                         <SelectInput
-                                            source={getSource('role')}
+                                            source="role"
                                             choices={[
                                                 {
                                                     id: 'headwriter',
@@ -181,7 +181,6 @@ const PostCreate = () => {
                                                     name: 'Co-Writer',
                                                 },
                                             ]}
-                                            {...rest}
                                             label="Role"
                                         />
                                     ) : null

examples/simple/src/posts/PostEdit.tsx

@@ -160,11 +160,11 @@ const PostEdit = () => {
                                     <AutocompleteInput helperText={false} />
                                 </ReferenceInput>
                                 <FormDataConsumer>
-                                    {({ scopedFormData, getSource, ...rest }) =>
+                                    {({ scopedFormData }) =>
                                         scopedFormData &&
                                         scopedFormData.user_id ? (
                                             <SelectInput
-                                                source={getSource('role')}
+                                                source="source"
                                                 choices={[
                                                     {
                                                         id: 'headwriter',
@@ -180,7 +180,6 @@ const PostEdit = () => {
                                                     },
                                                 ]}
                                                 helperText={false}
-                                                {...rest}
                                             />
                                         ) : null
                                     }

packages/ra-core/src/core/SourceContext.tsx

@@ -0,0 +1,35 @@
+import { createContext, useContext } from 'react';
+
+export type SourceContextValue = {
+    /*
+     * Returns the source for a field or input, modified according to the context.
+     */
+    getSource: (source: string) => string;
+    /*
+     * Returns the label for a field or input, modified according to the context. Returns a translation key.
+     */
+    getLabel: (source: string) => string;
+};
+
+/**
+ * Context that provides a function that accept a source and return a modified source (prefixed, suffixed, etc.) for fields and inputs.
+ *
+ * @example
+ * const sourceContext = {
+ *  getSource: source => `coordinates.${source}`,
+ *  getLabel: source => `resources.posts.fields.${source}`,
+ * }
+ * const CoordinatesInput = () => {
+ *   return (
+ *     <SouceContextProvider value={sourceContext}>
+ *       <TextInput source="lat" />
+ *       <TextInput source="lng" />
+ *     </SouceContextProvider>
+ *   );
+ * };
+ */
+export const SourceContext = createContext<SourceContextValue>(null);
+
+export const SourceContextProvider = SourceContext.Provider;
+
+export const useSourceContext = () => useContext(SourceContext);

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

@@ -7,9 +7,11 @@ export * from './Resource';
 export * from './ResourceContext';
 export * from './ResourceContextProvider';
 export * from './ResourceDefinitionContext';
+export * from './SourceContext';
 export * from './useGetResourceLabel';
 export * from './useResourceDefinitionContext';
 export * from './useResourceContext';
 export * from './useResourceDefinition';
 export * from './useResourceDefinitions';
 export * from './useGetRecordRepresentation';
+export * from './useWrappedSource';

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

@@ -0,0 +1,16 @@
+import { useSourceContext } from './SourceContext';
+
+/**
+ * Get the source prop for a field or input by checking if a source context is available.
+ * @param {string} source The original source prop
+ * @returns {string} The source prop, either the original one or the one modified by the SourceContext.
+ * @example
+ * const MyInput = ({ source, ...props }) => {
+ *   const finalSource = useWrappedSource(source);
+ *   return <input name={finalSource} {...props} />;
+ * };
+ */
+export const useWrappedSource = (source: string) => {
+    const sourceContext = useSourceContext();
+    return sourceContext?.getSource(source) ?? source;
+};

packages/ra-core/src/form/Form.tsx

@@ -14,8 +14,7 @@ import {
     OptionalRecordContextProvider,
     SaveHandler,
 } from '../controller';
-import { useResourceContext } from '../core';
-import { LabelPrefixContextProvider } from '../util';
+import { SourceContextProvider, SourceContextValue, useResourceContext } from '../core';
 import { ValidateForm } from './getSimpleValidationResolver';
 import { useAugmentedForm } from './useAugmentedForm';
 
@@ -53,10 +52,14 @@ export const Form = <RecordType = any>(props: FormProps<RecordType>) => {
     const record = useRecordContext(props);
     const resource = useResourceContext(props);
     const { form, formHandleSubmit } = useAugmentedForm(props);
+    const sourceContext = React.useMemo<SourceContextValue>(() => ({
+        getSource: (source: string) => source,
+        getLabel: (source: string) => `resources.${resource}.fields.${source}`,
+    }), [resource]);
 
     return (
         <OptionalRecordContextProvider value={record}>
-            <LabelPrefixContextProvider prefix={`resources.${resource}.fields`}>
+            <SourceContextProvider value={sourceContext}>
                 <FormProvider {...form}>
                     <FormGroupsProvider>
                         <form
@@ -69,7 +72,7 @@ export const Form = <RecordType = any>(props: FormProps<RecordType>) => {
                         </form>
                     </FormGroupsProvider>
                 </FormProvider>
-            </LabelPrefixContextProvider>
+            </SourceContextProvider>
         </OptionalRecordContextProvider>
     );
 };

packages/ra-core/src/form/FormDataConsumer.spec.tsx

@@ -14,7 +14,7 @@ import {
 import expect from 'expect';
 
 describe('FormDataConsumerView', () => {
-    it('does not call its children function with scopedFormData and getSource if it did not receive an index prop', () => {
+    it('does not call its children function with scopedFormData if it did not receive a source containing an index', () => {
         const children = jest.fn();
         const formData = { id: 123, title: 'A title' };
 
@@ -30,46 +30,20 @@ describe('FormDataConsumerView', () => {
 
         expect(children).toHaveBeenCalledWith({
             formData,
-            getSource: expect.anything(),
         });
     });
 
-    it('calls its children function with scopedFormData and getSource if it received an index prop', () => {
-        const children = jest.fn(({ getSource }) => {
-            getSource('id');
-            return null;
-        });
-        const formData = { id: 123, title: 'A title', authors: [{ id: 0 }] };
-
-        render(
-            <FormDataConsumerView
-                form="a-form"
-                source="authors[0]"
-                index={0}
-                formData={formData}
-            >
-                {children}
-            </FormDataConsumerView>
-        );
-
-        expect(children.mock.calls[0][0].formData).toEqual(formData);
-        expect(children.mock.calls[0][0].scopedFormData).toEqual({ id: 0 });
-        expect(children.mock.calls[0][0].getSource('id')).toEqual(
-            'authors[0].id'
-        );
-    });
-
     it('calls its children with updated formData on first render', async () => {
         let globalFormData;
         render(
             <AdminContext dataProvider={testDataProvider()}>
                 <SimpleForm>
                     <BooleanInput source="hi" defaultValue />
                     <FormDataConsumer>
-                        {({ formData, getSource, ...rest }) => {
+                        {({ formData }) => {
                             globalFormData = formData;
 
-                            return <TextInput source="bye" {...rest} />;
+                            return <TextInput source="bye" />;
                         }}
                     </FormDataConsumer>
                 </SimpleForm>
@@ -87,10 +61,8 @@ describe('FormDataConsumerView', () => {
                 <SimpleForm>
                     <BooleanInput source="hi" defaultValue />
                     <FormDataConsumer>
-                        {({ formData, ...rest }) =>
-                            !formData.hi ? (
-                                <TextInput source="bye" {...rest} />
-                            ) : null
+                        {({ formData }) =>
+                            !formData.hi ? <TextInput source="bye" /> : null
                         }
                     </FormDataConsumer>
                 </SimpleForm>
@@ -121,19 +93,11 @@ describe('FormDataConsumerView', () => {
                         <SimpleFormIterator>
                             <TextInput source="name" />
                             <FormDataConsumer>
-                                {({
-                                    formData,
-                                    scopedFormData,
-                                    getSource,
-                                    ...rest
-                                }) => {
+                                {({ scopedFormData }) => {
                                     globalScopedFormData = scopedFormData;
                                     return scopedFormData &&
                                         scopedFormData.name ? (
-                                        <TextInput
-                                            source={getSource('role')}
-                                            {...rest}
-                                        />
+                                        <TextInput source="role" />
                                     ) : null;
                                 }}
                             </FormDataConsumer>