Endpoint: HTTP Post

We did not have time to demo this in class

We want to allow a client to "post" a course, that is, to create a course and add it to our database using our API.

We will use the same endpoint /courses but this time, we write code to handle a post request.

app.post("/courses", ctx -> {
  // Typically, the user provides the course as a JSON object.
  // Maps a JSON body to a Java class using JavalinJson:
  Course course = ctx.bodyAsClass(Course.class);
  // Next, add the course to our databse using our DAO:
  courseDao.add(course); 
  // Conventionally, return the added course to client:
  ctx.json(course); 
  ctx.contentType("application/json");
  // Also, return 201 status code to say operation succeeded.
  ctx.status(201);   
});

Use Postman to add a course: