Bug: Auto discounts not working for membership

Created by: chamilwijesooriya

Auto discounts feature is not working for memberships.

• CiviDiscount 3.3
• CiviCRM 5.1.1
• Auto populated with default civi data

Steps to reproduce:

1. Create a new discount
2. Add a single membership type
3. In Automatic Discounts section enter the following: Entity : Contact API String: {"custom_2":"Single"}
4. Save
5. Go to a any contact that has Marital Status as Single
6. Goto Memberships -> Add Membership
7. Choose the relevant membership type
8. Verify bug

NB: custom_2 is Marital Status under Constituent Information

Possible Solution: In line 583 of cividiscount.php (cividiscount_civicrm_membershipTypeValue) (v3.3), change:

if (!empty($code)) {
    $discounts = $discountCalculator->getDiscounts();
}

to:

$discounts = $discountCalculator->getDiscounts();
if (empty($code))
    $discounts = $discountCalculator->autoDiscounts;