Merge pull request #7954 from marmelab/7935-fix-delete-leading-character-autocomplete-input

Fix leading character in AutocompleteInput can not be deleted

Author: fzaninotto

packages/ra-ui-materialui/src/input/AutocompleteInput.spec.tsx

@@ -124,6 +124,39 @@ describe('<AutocompleteInput />', () => {
         });
     });
 
+    it('should allow to clear the first character', async () => {
+        render(
+            <AdminContext dataProvider={testDataProvider()}>
+                <SimpleForm onSubmit={jest.fn()} defaultValues={{ role: 2 }}>
+                    <AutocompleteInput
+                        {...defaultProps}
+                        optionText="foobar"
+                        choices={[
+                            { id: 2, foobar: 'foo' },
+                            { id: 3, foobar: 'bar' },
+                        ]}
+                    />
+                </SimpleForm>
+            </AdminContext>
+        );
+
+        const input = screen.getByLabelText(
+            'resources.users.fields.role'
+        ) as HTMLInputElement;
+
+        fireEvent.focus(input);
+
+        userEvent.type(input, 'f');
+        await waitFor(() => {
+            expect(input.value).toEqual('f');
+        });
+
+        userEvent.type(input, '{backspace}');
+        await waitFor(() => {
+            expect(input.value).toEqual('');
+        });
+    });
+
     it('should use optionText with a string value including "." as text identifier', async () => {
         render(
             <AdminContext dataProvider={testDataProvider()}>

packages/ra-ui-materialui/src/input/AutocompleteInput.tsx

@@ -357,14 +357,14 @@ If you provided a React element for the optionText prop, you must also provide t
         newInputValue: string,
         reason: string
     ) => {
-        if (!doesQueryMatchSelection(newInputValue)) {
+        if (!doesQueryMatchSelection(newInputValue, event?.type)) {
             setFilterValue(newInputValue);
             debouncedSetFilter(newInputValue);
         }
     };
 
     const doesQueryMatchSelection = useCallback(
-        filter => {
+        (filter: string, eventType?: string) => {
             let selectedItemTexts = [];
 
             if (multiple) {
@@ -375,7 +375,9 @@ If you provided a React element for the optionText prop, you must also provide t
                 selectedItemTexts = [getOptionLabel(selectedChoice)];
             }
 
-            return selectedItemTexts.includes(filter);
+            return eventType && eventType === 'change'
+                ? selectedItemTexts.includes(filter) && selectedChoice
+                : selectedItemTexts.includes(filter);
         },
         [getOptionLabel, multiple, selectedChoice]
     );