1. Turkey visa requirements for Indonesia citizens
Indonesia is in the exemption list for Visa to Turkey within 90 days. Therefore:
If you stay in Turkey less than 90 days, visa to Turkey is NOT REQUIRED
If you stay in Turkey more than 90 days, visa to Turkey is REQUIRED
2. How to apply Turkey visa for Indonesia citizens
You can also contact and apply at Turkey Embassy in Indonesia if you want to stay in Turkey longer than 90 days.