date validation codeigniter 4

validation function in codeigniter 4

    required
    valid_date
    matches[field_name]
    min_length[x]
    max_length[x]
    exact_length[x]
    alpha
    alpha_numeric
    alpha_dash
    numeric
    integer
    is_natural
    is_unique
    is_not_unique
    is_natural_no_zero
    valid_email
    valid_emails
    valid_ip
    valid_base64
    is_unique[table.email]
    edit_unique[users.user_name.'.$id.']'

Error Message customized

 

 'category_id' => ['label' => 'Category', 'rules' => 'required'],  
https://codeigniter4.github.io/CodeIgniter4/libraries/validation.html#form-validation-tutorial