Why am I getting the error 'Field 'user_id' doesn't have a default value' when creating a new match in Laravel 5.4?

Error: "Field 'user_id' doesn't have a default value" in Laravel 5.4

Question:

When attempting to create a new match using a Deal object, the following error occurs:

QueryException in Connection.php line 647:
SQLSTATE[HY000]: General error: 1364 Field 'user_id' doesn't have a default value (SQL: insert into matches (deal_id) values (1))

Despite having an empty $guarded array, why is this error being raised?

Answer:

The $guarded array prevents mass assignment to all fields except those explicitly mentioned. To resolve the issue, remove the $guarded array and define the $fillable array instead.

Solution:

In the Match class, add the following:

protected $fillable = ['user_id', 'deal_id'];

This will allow mass assignment to the user_id and deal_id fields, which are necessary for creating a new match.

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