Resolve "Store last location enqueued and suggest as room when enqueuing again"

What does this mr do?

Stores last known location in session storage as suggests it as a placeholder value.

Screenshots

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made.
• I have updated the documentation accordingly.
• I adhere to the style guide.

Closes #609 (closed)

src/main/java/nl/tudelft/queue/controller/LabController.java

@@ -31,6 +31,7 @@ import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
 import javax.transaction.Transactional;
 
 import nl.tudelft.labracore.api.dto.*;
@@ -119,6 +120,9 @@ public class LabController {
 	@Autowired
 	private RoleDTOService roleService;
 
+	@Autowired
+	private HttpSession session;
+
 	/**
 	 * Gets the page with information on the lab with the given id. This page is different for TAs than for
 	 * students. For students, this page shows their history of requests and their current requests. For TAs,
@@ -209,6 +213,10 @@ public class LabController {
 			model.addAttribute("request", new LabRequestCreateDTO());
 			model.addAttribute("rType", "lab");
 
+			if (session.getAttribute("lastKnownLocation") != null) {
+				model.addAttribute("lastKnownLocation", session.getAttribute("lastKnownLocation"));
+			}
+
 			return "lab/enqueue/lab";
 		} else {
 			model.addAttribute("request", new SelectionRequestCreateDTO());
@@ -284,6 +292,11 @@ public class LabController {
 
 		dto.setSession(lab);
 		rs.createRequest(dto, student.getId(), true);
+
+		if (dto.getComment() != null) {
+			session.setAttribute("lastKnownLocation", dto.getComment());
+		}
+
 		return "redirect:/lab/" + lab.getId();
 	}