Hello, @aress31, Thanks for the detailed explanation!

Yes, It would be great! Do you want to work on this?

Source code:

Sure

We discussed with the core team and decided that the implementation would be better as follows:

1. <Breadcrumb /> should take a new prop as minItems(or better name) and the breadcrumbs.length === 1 check should be compared with this new prop.

2. new prop's type should be added to @refinedev/ui-types

/** 
* Minimum number of breadcrumb items required for rendering. Component won't render if items * are less than this number. 
*/
minItems?: number;

3. All UI packages should be updated

• https://github.com/refinedev/refine/tree/master/packages/mui/src/components/breadcrumb
• https://github.com/refinedev/refine/tree/master/packages/core/src/hooks/breadcrumb
• https://github.com/refinedev/refine/tree/master/packages/antd/src/components/breadcrumb
• https://github.com/refinedev/refine/tree/master/packages/mantine/src/components/breadcrumb
• https://github.com/refinedev/refine/tree/master/packages/chakra-ui/src/components/breadcrumb

4. All tests should be updated. If possible, it should be implemented in the @refinedev/ui-tests package; otherwise, it can be implemented in the package's own test file.

5. All documentation should be updated.

I’d also like to point out that <Breadcrumb /> can be globally configurable by passing a prop to the <Refine /> component.

You can find usage examples in the documentation here.

If I missed anything, please feel free to update it 🚀

@alicanerdurmaz, I’ve made further updates to the PR, and it’s now ready for your review. However, I have a few points:

1. I’m unsure how to implement the requested changes in https://github.com/refinedev/refine/tree/master/packages/core/src/hooks/breadcrumb. Any clarification or guidance would be appreciated.

2. One (1) test is failing, and I suspect it’s because I haven’t yet addressed the issues mentioned in https://github.com/refinedev/refine/tree/master/packages/core/src/hooks/breadcrumb. Could you kindly review that part?

   > @refinedev/mui:test --testNamePattern=breadcrumb --onlyFailures
   
   @refinedev/mui: > @refinedev/[email protected] test D:\Github\refine\packages\mui
   @refinedev/mui: > jest --passWithNoTests --runInBand "--testNamePattern=breadcrumb" "--onlyFailures"
   @refinedev/mui:  FAIL   mui  src/components/breadcrumb/index.spec.tsx
   @refinedev/mui:   ● Console
   @refinedev/mui:     console.error
   @refinedev/mui:       Warning: `ReactDOMTestUtils.act` is deprecated in favor of `React.act`. Import `act` from `react` instead of `react-dom/test-utils`. See https://react.dev/warnings/react-dom-test-utils for more info.
   @refinedev/mui: 
   @refinedev/mui:       11 |   return render(
   @refinedev/mui:       12 |     <Routes>
   @refinedev/mui:     > 13 |       <Route path="/:resource/:action" element={children} />
   @refinedev/mui:          |                                        ^
   @refinedev/mui:       14 |     </Routes>,
   @refinedev/mui:       15 |     {
   @refinedev/mui:       16 |       wrapper: TestWrapper(wrapperProps),
   @refinedev/mui:
   @refinedev/mui:       at printWarning (../../node_modules/react-dom/cjs/react-dom-test-utils.development.js:71:30)
   @refinedev/mui:       at error (../../node_modules/react-dom/cjs/react-dom-test-utils.development.js:45:7)
   @refinedev/mui:       at actWithWarning (../../node_modules/react-dom/cjs/react-dom-test-utils.development.js:1736:7)
   @refinedev/mui:       at ../../node_modules/@testing-library/react/dist/act-compat.js:63:25
   @refinedev/mui:       at renderRoot (../../node_modules/@testing-library/react/dist/pure.js:159:26)
   @refinedev/mui:       at render (../../node_modules/@testing-library/react/dist/pure.js:246:10)
   @refinedev/mui:       at V (../ui-tests/src/tests/breadcrumb.tsx:13:40)
   @refinedev/mui:       at Object.<anonymous> (../ui-tests/src/tests/breadcrumb.tsx:33:42)
   @refinedev/mui:   ● Breadcrumb › [@refinedev/ui-tests] Common Tests / CRUD Create › should render successfully when at least 1 breadcrumb item is present
   @refinedev/mui:     TestingLibraryElementError: Unable to find an element with the text: Posts. This could be because the text is broken up by multiple elements. In this case, you can provide a function for your text matcher to make your matcher more flexible.
   @refinedev/mui:     Ignored nodes: comments, script, style
   @refinedev/mui:     <body>
   @refinedev/mui:       <div />
   @refinedev/mui:     </body>
   @refinedev/mui:
   @refinedev/mui:       50 |
   @refinedev/mui:       51 |     it("should render breadcrumb items with link", async () => {
   @refinedev/mui:     > 52 |       const { container } = renderBreadcrumb(<Breadcrumb />, {
   @refinedev/mui:          |        ^
   @refinedev/mui:       53 |         resources: [{ name: "posts", list: DummyResourcePage }],
   @refinedev/mui:       54 |         routerInitialEntries: ["/posts/create"],
   @refinedev/mui:       55 |       });
   @refinedev/mui:
   @refinedev/mui:       at Object.getElementError (../../node_modules/@testing-library/dom/dist/config.js:37:19)
   @refinedev/mui:       at ../../node_modules/@testing-library/dom/dist/query-helpers.js:76:38
   @refinedev/mui:       at ../../node_modules/@testing-library/dom/dist/query-helpers.js:52:17
   @refinedev/mui:       at ../../node_modules/@testing-library/dom/dist/query-helpers.js:95:19
   @refinedev/mui:       at Object.<anonymous> (../ui-tests/src/tests/breadcrumb.tsx:52:8)
   @refinedev/mui: Test Suites: 1 failed, 2 skipped, 1 of 3 total
   @refinedev/mui: Tests:       1 failed, 22 skipped, 8 passed, 31 total
   @refinedev/mui: Snapshots:   0 total
   @refinedev/mui: Time:        16.606 s, estimated 38 s
   @refinedev/mui: Ran all test suites with tests matching "breadcrumb".
   @refinedev/mui:  ELIFECYCLE  Test failed. See above for more details.
   

3. I’m finding it difficult to work on the PR as I don’t have full visibility of the changes. I’ve followed the contributing guide, but running pnpm dev --scope @refinedev/mui doesn’t start a local server where I can preview the changes. Could you provide guidance on this? It would also be helpful if the guide could be improved for future contributors.