json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "course": {
              "type": "object",
              "properties": {
                  "id": {
                      "type": "integer"
                  },
                  "number": {
                      "type": "string"
                  },
                  "title": {
                      "type": "string"
                  },
                  "department_id": {
                      "type": "integer"
                  }
              }
          },
          "quarter": {
              "type": "object",
              "properties": {
                  "id": {
                      "type": "integer"
                  },
                  "year": {
                      "type": "integer"
                  },
                  "name": {
                      "type": "string"
                  },
                  "current": {
                      "type": "boolean"
                  }
              }
          },
          "professor": {
              "type": "object",
              "properties": {
                  "id": {
                      "type": "integer"
                  },
                  "first_name": {
                      "type": "string"
                  },
                  "last_name": {
                      "type": "string"
                  }
              }
          },
          "user_posted": {
              "type": "boolean"
          }
      }
  }