Why is the first_name still null but I set it NOT NULL?

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1.00/5 (1 vote)

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I obtained an error:

SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'First_Name' cannot be null (SQL: insert into `customers` (`First_Name`, `Last_Name`, `Email`, `Credit_Card`, `Password`) values (?, ?, ?, ?, ?))

Here is my controller:

class InputController extends Controller
{
    public static function save(Request $request)
    {
        $First_Name = $request->First_Name;
        $Last_Name = $request->Last_Name;
        $Email = $request->Email;
        $Credit_Card = $request->Credit_Card;
        $Password = $request->Password;

        $customer = new CustomersTable;
        $customer->First_Name = $First_Name;
        $customer->Last_Name = $Last_Name;
        $customer->Email = $Email;
        $customer->Credit_Card = $Credit_Card;
        $customer->Password = $Password;

        $customer->save();
    }
}

What I have tried:

I've been stuck for 2 hours try to use post things to the database, even use sample code on Stackoverflow.

Posted 14-Aug-21 23:54pm

HackerRhino

Updated 15-Aug-21 0:55am

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Comments

Richard MacCutchan 15-Aug-21 6:37am

Where is the code that tries to send the information to the database?

HackerRhino 15-Aug-21 23:12pm

I use by my controller. But now it worked.

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OriginalGriff · Answer 1 · 2021-08-15T00:55:00

You get that error because the value you are actually sending to SQL is null - it has no value, and your column is (rightly) set to not accept null first names.

So you need to find out exactly what you are sending, and why it isn't what you think it is. Most likely, the problem is either here:

PHP

$First_Name = $request->First_Name;

Or here:

PHP

$customer->save();

But the first is most likely.

So use the debugger (A Detailed Guide to PHP Debugging – Stackify[^]) to find out exactly what is is your variables at run time. At a guess, the request has no First_name value, but we can't run your code under the same circumstances as you so we can't tell.

When you have found out what exactly is null you can start look for why that doesn't have the value you expected.

Sorry, but we can't do any of that for you - time for you to learn a new (and very, very useful) skill - debugging!