Support unshortlisting for a project.

app/messages/__init__.py

@@ -2,6 +2,7 @@ from .message_builders import (
     login_manager_message,
     login_unsuccessful_error,
     project_not_found,
+    shortlist_not_found,
 )
 
 #########################################################################
@@ -12,3 +13,4 @@ LOGIN_UNSUCCESSFUL_ERROR = login_unsuccessful_error()
 LOGIN_MANAGER_MESSAGE = login_manager_message()
 
 PROJECT_NOT_FOUND = project_not_found()
+SHORTLIST_NOT_FOUND = shortlist_not_found()

app/messages/message_builders.py

@@ -54,3 +54,13 @@ def project_not_found():
             style=ERROR,
         )
     )
+
+
+def shortlist_not_found():
+    return MessageEncoder.encode(
+        Message(
+            header="<h3><strong>Shortlist not found</strong></h3>",
+            body="<p>The selected shortlisting could not be found.</p>",
+            style=ERROR,
+        )
+    )

app/templates/pages/project-form.html

@@ -20,7 +20,7 @@
                             {{ form.is_student_proposal(class="w3-check", id="is-student-proposal") }} {{ form.is_student_proposal.label }}
                         </div>
                         <div class="w3-threequarter">
-                            {{ form.on_behalf(placeholder="Student proposer", class="w3-input w3-border", id="student-proposer") }}
+                            {{ form.on_behalf(placeholder="Student username", class="w3-input w3-border", id="student-proposer") }}
                         </div>
                     </section>
                     <button type="submit" class="w3-btn w3-{{ theme_colour }}">Save</button>

app/templates/pages/student/projects.html

@@ -12,7 +12,8 @@
                             <a href="{{ url_for("student.view_project", project_id=project.id) }}"
                                class="w3-button w3-hover-blue">View</a>
                             {% if project.id in short_listings %}
-                                <button class="w3-button w3-hover-blue" disabled>Shortlist</button>
+                                <a href="{{ url_for("student.unshortlist_project", project_id=project.id) }}"
+                                   class="w3-button w3-hover-blue">Unshortlist</a>
                             {% else %}
                                 <a href="{{ url_for("student.shortlist_project", project_id=project.id) }}"
                                    class="w3-button w3-hover-blue">Shortlist</a>

app/views/student.py

@@ -72,3 +72,22 @@ def shortlist_project(project_id):
     else:
         flash(messages.PROJECT_NOT_FOUND)
     return redirect(url_for("student.projects"))
+
+
+@bp.route("/projects/<project_id>/unshortlist")
+@login_required
+def unshortlist_project(project_id):
+    if Project.query.get(project_id):
+        shortlist: Shortlisting = (
+            Shortlisting.query.filter(Shortlisting.project_id == project_id)
+            .filter_by(student=current_user.username)
+            .first()
+        )
+        if shortlist:
+            db.session.delete(shortlist)
+            db.session.commit()
+        else:
+            flash(messages.SHORTLIST_NOT_FOUND)
+    else:
+        flash(messages.PROJECT_NOT_FOUND)
+    return redirect(url_for("student.projects"))