gistfile1.php

/**
	 * Mutators
	 */
	public function setEmailAttribute($value)
	{
		$value = \Import::splitMultipleFieldsData($value);

		$this->setEmailAddressesAttribute($value);
	}

	public function setEmailAddressesAttribute(array $array)
	{
		// Need to save the student to ensure it has an ID to relate to
		$this->save();

		// Collect E-Mail Addresses, so we can remove any that aren't here.
		$emailAddresses = array();

		// Order E-Mail Addresses
		$order = 1;

		foreach ($array as $emailAddress) {
			if ( ! is_array($emailAddress)) {
				// To match the data from the Student Create/Edit form
				$emailAddress = array(
					'email' => $emailAddress
				);
			}

			$emailAddress['email'] = trim($emailAddress['email']);

			if ( ! strlen($emailAddress['email'])) {
				// E-Mail Address is empty, but that is ok because empty fields will be ignored.
				continue;
			}

			if (filter_var($emailAddress['email'], FILTER_VALIDATE_EMAIL) === false) {
				throw new \Exception(sprintf('"%s" does not appear to be a valid e-mail address.', $emailAddress['email']));
			}

			$emailAddress['email'] = strtolower($emailAddress['email']);

			// Used after the loop to remove any e-mail addresses that aren't here afterwards.
			$emailAddresses[] = $emailAddress['email'];

			// Check if Student already has this e-mail address
			$studentEmailAddress = StudentEmailAddress::where('student_id', $this->id)
				->where('email', $emailAddress['email'])
				->first();

			if (is_null($studentEmailAddress)) {
				$studentEmailAddress             = new StudentEmailAddress();
				$studentEmailAddress->student_id = $this->id;
				$studentEmailAddress->email      = $emailAddress['email'];
			}

			if (isset($emailAddress['unsubscribed'])) {
				$studentEmailAddress->unsubscribed = (bool) $emailAddress['unsubscribed'];
			} else {
				$studentEmailAddress->unsubscribed = false;
			}

			$studentEmailAddress->order = $order++;
			$studentEmailAddress->save();
		}

		if (count($emailAddresses)) {
			// Remove E-Mail addresses that aren't in the input.
			StudentEmailAddress::where('student_id', $this->id)
				->whereNotIn('email', $emailAddresses)
				->delete();
		} else {
			// No E-Mail Addreses were found in the input.
			// Remove All E-Mail Addresses for Student.
			StudentEmailAddress::where('student_id', $this->id)
				->delete();
		}
	}