Task 7: implement the API of writing answers (returned by the front-end) to the Answer table

[yalgorithm777]

• Path:
  • /answer/
• Available methods:
  • POST
• Required fields (front-end provides to the back-end):
  • “user_token”: returned by the server (obtained from the /user/ API)
  • “data”: [{“timestamp”: XXX, “location_id”: XXX, “year_new”: XXX, “year_old”: XXX, “zoom_level”: XXX, “left_top_lat”: XXX, “left_top_lng”: XXX, “bottom_right_lat”: XXX, “bottom_right_lng”: XXX, “land_usage”: XXX, “expansion”: XXX}, ...]
• Returned fields (back-end returns to the front-end):
  • “passed”: does the user pass the data quality check using gold standards

[Sourbiebie]

Question. Is "size" (or "gold_standard_size" as well) necessary as input for this API?
Currently I only compare the answers to the gold standards. If anyone fails, I fail the submission.
However if the number of answer not as expected, the API doesn't know.
@yalgorithm777 How do you think?

[Sourbiebie]

Done and waiting for code review.