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I wrote about how to resolve Laravel's 405 error (Method Not Allowed).

Here is the error message.

The GET method is not supported for this route. Supported methods: POST.

Development Environment

Laravel 11
PHP 8.3

Cause

Attempting to access a POST route with a GET request

Check the web.php file.

The routing is written as follows:

Route::post('memo', [MemoController::class, 'store'])->name('memo.store');

If you try to access this POST method via a browser, the request will be sent as GET, leading to the error.

For example:

http://localhost/memo

This will cause the 405 error.

Solution

Verify if GET and POST are properly used

The specific function you are trying to implement may vary, so take a moment to calmly verify if you are using GET and POST correctly.

When Unsure Whether to Use GET or POST in Routing (web.php)

Use GET if you want to display a page

If you want to display a page, create a route using GET.

For example, if you want to create a memo list page, use GET like this:

Route::get('memo', [MemoController::class, 'index'])->name('memo.index');

Use POST if you want to input data

If the function involves users inputting data and saving something, create a route using POST.

For example, if you are creating a memo registration function, use POST like this:

Route::post('memo', [MemoController::class, 'store'])->name('memo.store');

Summary

That's all.

I explained a common mistake. I make this mistake quite often myself.

I hope this helps someone.

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