how was the new ruler of the state selected?

new ruler's selection was a part of sarcasm of the story. the ministers after having their king hung, they were confused and without even thinking they said that whoever will enter the city gate first, that person will utter the name of the king. and an i d i o t entered, as loved the melons a lot, he uttered melon and the ministers crowned the melon and put it on the throne with all royal processions.