Laravel 6 Validation Bug? - laravel

Question

I have a problem about my Laravel project.
$request->validate(
[
'blogs_file' => 'required|image|mimes:jpeg,jpg,png|max:2048',
'blogs_title' => 'required|unique:App\Blogs,blogs_title',
'blogs_content' => 'required',
]);
I made a limit to blogs_file. It should only allowed jpg,png,jpeg and max 2 MB.
But when i try to put a mp4 file, it pass. What is the problem there?
I have already added enctype="multipart/form-data" to my form on blade page.
If i want to put an mp4 file or zip lower than 2 MB the validation works fine. But if i upload any kind of data upper than 2 MB; it passes. Actually, when i check to my db; blogs_file coming NULL on that way, but it returns with success message to user.
UPDATE:
my create.blade.php file;
<div class="box-body">
<form action="{{route('blogs.store')}}" method="POST" enctype="multipart/form-data">
#csrf
<div class="form-group">
<label>Resim Seç</label>
<div class="row">
<div class="col-xs-12">
<input class="form-control" required name="blogs_file" type="file">
</div>
</div>
</div>
<div class="form-group">
<label>Başlık</label>
<div class="row">
<div class="col-xs-12">
<input class="form-control" required type="text" placeholder="Blog Başlığı..." name="blogs_title">
</div>
</div>
</div>
<div class="form-group">
<label>Sayfa Linki</label>
<div class="row">
<div class="col-xs-12">
<input class="form-control" placeholder="Sayfa linki girebilirsiniz(isteğe bağlı)"
name="blogs_slug" type="text">
</div>
</div>
</div>
<div class="form-group">
<label>İçerik</label>
<div class="row">
<div class="col-xs-12">
<textarea class="form-control" id="editor1" name="blogs_content"
required></textarea>
</div>
<script>
CKEDITOR.replace( 'editor1' );
</script>
</div>
</div>
<div class="form-group">
<label>Durum</label>
<div class="row">
<div class="col-xs-12">
<select name="blogs_status" class="form-control">
<option value="1">Aktif</option>
<option value="0">Pasif</option>
</select>
</div>
</div>
</div>
<div align="right" class="box-footer">
<button type="submit" class="btn btn-primary">Ekle</button>
</div>
</form>
</div>
route:
Route::resource('blogs','BlogController');
BlogController:
public function store(Request $request)
{
if (strlen($request->blogs_slug)>3)
{
$slug=Str::slug($request->blogs_slug);
} else {
$slug=Str::slug($request->blogs_title);
}
if ($request->hasFile('blogs_file'))
{
$request->validate(
[
'blogs_file' => 'required|file|mimes:jpeg,jpg,png|max:2048',
'blogs_title' => 'required|unique:App\Blogs,blogs_title',
'blogs_content' => 'required',
]);
$file_name=uniqid().".".$request->blogs_file->getClientOriginalExtension();
$request->blogs_file->move(public_path('images/blogs'),$file_name);
$request->blogs_file=$file_name;
}
$blog= new Blogs;
$blog->blogs_file=$request->blogs_file;
$blog->blogs_title=$request->blogs_title;
$blog->blogs_slug=$slug;
$blog->blogs_content=$request->blogs_content;
$blog->blogs_status=$request->blogs_status;
$blog->uniqid=uniqid();
$blog->save();
if ($blog)
{
return redirect(route('blogs.index'))->with('success','İşlem Başarılı!');
} else {
return back()->with('error','İşlem Başarısız!');
}
}

Answer 1

1st. You have missed file rule.
2nd. You may use either image rule (that validates a file to be jpeg, png, bmp, gif, svg, or webp) or use mimes:jpeg,jpg,png:
So your validation would be either:
'blogs_file' => 'required|file|mimes:jpeg,jpg,png|max:2048',
Or:
'blogs_file' => 'required|file|image|max:2048',
3rd. You've put your validation $request->validate inside an if, it's wrong and makes the problem! You may conditionally adding rules or use after validation hook for more complex validations instead.