I'm trying to implement a beforeSave function that from a selected modal dropdownlist changes a value to positive or negative number accordingly, but it always change accordingly to the first if:
this is the modal code:
<?= $form->field($model, 'tipo_fatura')->dropDownList([ 'Fatura' =>
'Fatura', 'Nota de Crédito' => 'Nota de Crédito', ],
['prompt' => '']) ?>
and this is the model code:
public function beforeSave($insert)
{
if (!parent::beforeSave($insert)) {
return false;
}
$tipo_fatura = $this->tipo_fatura;
if ($tipo_fatura->index = 2) {
$this->valor_fatura = 2;
} else if ($tipo_fatura = 'Fatura') {
$this->valor_fatura = 1;
} else {
}
return true;
}
Sorry, about my bad English.
And thank's in advance.
That is because you are assigning value inside if condition, not checking them.
if ($tipo_fatura->index = 2) {
Notice the = operator here, it should be ==. Same goes for other other conditions too.
Assigning value is a valid operation and PHP will not throw any error or notice about this. So a good rule of thumb would be to always use the value part on left side in a condition, like this:
if ( 2 == $test ) {
// do something
}
In this case even if you mistakenly add a single = here PHP will throw a PHP Parse error because 2 = $test will not be valid operation.