Laravel MIME issue while validating .csv file

Question

I have read couple of post regarding the issue of checking the file extension while upload a file using laravel.

I have the same issue and didn\'t file the solution

Answer 1

Here are several types I used for more complete csv validation, hope it will help future usage

        return [
            'sheet' => 'required|mimetypes:text/csv,text/plain,application/csv,text/comma-separated-values,text/anytext,application/octet-stream,application/txt'
        ];

Answer 2

I faced the same issue, and even it is old I wish this will help the others. To fix it you must know what mime you got from your request, to find it use this line of code:

dd($request->file('document')->getMimeType(),$request->file('document')->getClientOriginalExtension() );

So in my case, the file that I uploaded is CSV but I got a txt file extension. So I solve it like the previous answers in this post by just adding txt to request validation:

return [
    'sheet' => "required|mimes:csv,txt",
];

Answer 3

Surprised!

Its getting text/plain mime for the CSV, that was the cause of the issue.

So to fix this I just found which extension is responsible for text/plain and I found txt so i just updated my rules:

return [
    'sheet' => 'required|mimes:csv,txt'
];