Post an image along with text in django restframework with flutter

Question

I am creating a b2b e-commerce mobile application. I am using flutter as frontend and django for backend. I am stuck while sending a post request to django server with flutter. The case is I have two types of user. They are seller and buyer. The seller has to post product in the app. Model field for product are title, description, price and image. I created post method in django rest framework and it worked while checking through postman. But I am having hard time sending image through flutter. I used image picker to get the image. I searched for many things but could not figure out what to do. I found articles and videos posting only image at a time but i want to send image along with other text field. How can i do so??

Help me find a solution.