UserModel::insertForApproval PHP Method

    public function insertForApproval($FormPostValues, $Options = [])
    {
        $RoleIDs = RoleModel::getDefaultRoles(RoleModel::TYPE_APPLICANT);
        if (empty($RoleIDs)) {
            throw new Exception(t('The default role has not been configured.'), 400);
        }
        // Define the primary key in this model's table.
        $this->defineSchema();
        // Add & apply any extra validation rules:
        $this->Validation->applyRule('Email', 'Email');
        // Make sure that the checkbox val for email is saved as the appropriate enum
        if (array_key_exists('ShowEmail', $FormPostValues)) {
            $FormPostValues['ShowEmail'] = forceBool($FormPostValues['ShowEmail'], '0', '1', '0');
        }
        if (array_key_exists('Banned', $FormPostValues)) {
            $FormPostValues['Banned'] = forceBool($FormPostValues['Banned'], '0', '1', '0');
        }
        $this->addInsertFields($FormPostValues);
        if ($this->validate($FormPostValues, true)) {
            // Check for spam.
            $Spam = SpamModel::isSpam('Registration', $FormPostValues);
            if ($Spam) {
                $this->Validation->addValidationResult('Spam', 'You are not allowed to register at this time.');
                return;
            }
            $Fields = $this->Validation->validationFields();
            // All fields on the form that need to be validated (including non-schema field rules defined above)
            $Username = val('Name', $Fields);
            $Email = val('Email', $Fields);
            $Fields = $this->Validation->schemaValidationFields();
            // Only fields that are present in the schema
            unset($Fields[$this->PrimaryKey]);
            if (!$this->validateUniqueFields($Username, $Email)) {
                return false;
            }
            // If in Captcha registration mode, check the captcha value.
            if (val('CheckCaptcha', $Options, true) && Captcha::enabled()) {
                $captchaIsValid = Captcha::validate();
                if ($captchaIsValid !== true) {
                    $this->Validation->addValidationResult('Garden.Registration.CaptchaPublicKey', 'The captcha was not completed correctly. Please try again.');
                    return false;
                }
            }
            // Define the other required fields:
            $Fields['Email'] = $Email;
            $Fields['Roles'] = (array) $RoleIDs;
            // And insert the new user
            $UserID = $this->insertInternal($Fields, $Options);
        } else {
            $UserID = false;
        }
        return $UserID;
    }