Laravel eloquent — Field name returning null from trait

Question

Here is what I'm trying to do..

I have a enquiries table where job enquiries are stored. This stores a start address, and a finish address. Also stores predictive_price which is set to null when an enquiry is added.

The predictive_price is calculated dynamically and once the enquiry has been confirmed, the predictive_price is then stored within the table. This is because that during an enquiry lifetime, it could change addresses, distances or the tariffs that are set. I do not want to keep updating the predictive_price in the table everytime something has changed, it just allows for errors.

This is what I've done so far:

Inside my model Enquiries I have a function:

public function predictive_price() {
    return $this::calculatePredictivePrice();
}

This is then calling a method inside a trait where my model references such use EnquiriesHelper;

Inside the EnqEnquiriesHelper I have the following:

public function scopeCalculatePredictivePrice()
{
   return 1;
}

But when trying to output predictive_price is just says null which is what is stored within the database. Is there anyway (using methods) I can override what is being returned in predictive_price ?

Answer 1

$this::calculatePredictivePrice() to $this->calculatePredictivePrice() maybe ?

UPDATE

It shouldn't be a scope.Try removing the scope before the functions name