Laravel Unique Validation Rule

Here’s how you can fix it:

### Corrected Rule
If you want the `set_name` field to be unique in a specific database table, you need to include the table name in the `unique` rule:

$rules = [
    'set_name' => 'required|string|max:190|unique:table_name',
];

Replace `table_name` with the name of the table you want to check.

### Advanced Example with Column and Ignore
If you want to check uniqueness on a specific column or ignore a specific record (e.g., during updates), you can specify additional parameters:

$rules = [
    'set_name' => 'required|string|max:190|unique:table_name,column_name',
];

– `table_name`: Name of the table.
– `column_name`: Name of the column (defaults to the input name if omitted).

For ignoring a specific record, such as when updating:

$rules = [
    'set_name' => 'required|string|max:190|unique:table_name,column_name,' . $id,
];

Here, `$id` is the ID of the record to be ignored during the uniqueness check.

### Using `Rule` for Better Readability
Laravel provides a `Rule` facade for a more readable syntax:

use IlluminateValidationRule;

$rules = [
    'set_name' => [
        'required',
        'string',
        'max:190',
        Rule::unique('table_name')->ignore($id), // Ignore specific record
    ],
];

This method is especially useful for complex validation rules.