I have looked over a few tutorials on how to add a customer attribute to the customer edit page within admin.

• http://www.extensions.sashas.org/blog/magento-2-make-customer-attribute.html
• Magento 2: How to create a customer custom attribute?
• How to add dropdown attribute to custom module in magento 2.0

This however does not seem to be working completely for me. I added the below to my InstallData.php file:

public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context) {

    $customerSetup = $this->customerSetupFactory->create(['setup' => $setup]);

    $customerEntity = $customerSetup->getEavConfig()->getEntityType('customer');
    $attributeSetId = $customerEntity->getDefaultAttributeSetId();

    $attributeSet = $this->attributeSetFactory->create();
    $attributeGroupId = $attributeSet->getDefaultGroupId($attributeSetId);

    $customerSetup->addAttribute(Customer::ENTITY, 'cp_permissions', [
        'type' => 'text',
        'label' => 'Account Type',
        'input' => 'select',
        'source' => 'Magento\Eav\Model\Entity\Attribute\Source\Table',
        'required' => false,
        'visible' => true,
        'user_defined' => true,
        'sort_order' => 101,
        'position' => 101,
        'system' => 0,
        'option' =>
            array (
                'values' =>
                    array (
                        0 => 'Master',
                        1 => 'Branch'
                    ),
            ),
    ]);

    $attribute = $customerSetup->getEavConfig()->getAttribute(Customer::ENTITY, 'cp_permissions')
        ->addData([
            'attribute_set_id' => $attributeSetId,
            'attribute_group_id' => $attributeGroupId,
            'used_in_forms' => ['adminhtml_customer'],
        ]);

    $attribute->save();

    }
}

And run setup:upgrade to install the plugin. This works fine it seems and the attribute cp_permissions is added within the eav_attribute table however when checking the customer edit page within admin no attribute is visible. What am i doing wrong here?

UPDATE

Ok so i compared my attribute to the gender attribute and matched a lot of the values where there where differences and its shown up. Main issues seems to be that the type was static for gender, the source wasn't being set so i need to figure out why this is.