Add an endpoint to enroll a user in a course from the library page

Author: bnmnetp

controllers/default.py

@@ -659,3 +659,22 @@ def delete():
         auth.logout()  # logout user and redirect to home page
     else:
         redirect(URL("default", "user/profile"))
+
+
+@auth.requires_login()
+def enroll():
+    logger.debug(f"Request to login for {request.vars.course_name}")
+    course = db(db.courses.course_name == request.vars.course_name).select().first()
+    # is the user already registered for this course?
+    res = db(db.user_courses.course_id == course.id).select().first()
+    if res:
+        session.flash = f"You are already registered for {request.vars.course_name}"
+        redirect(URL("default", "courses"))
+
+    db.user_courses.insert(user_id=auth.user.id, course_id=course.id)
+    db(db.auth_user.id == auth.user.id).update(course_id=course.id, active="T")
+    db(db.auth_user.id == auth.user.id).update(course_name=request.vars.course_name)
+    auth.user.update(course_name=request.course_name)
+    auth.user.update(course_id=course.id)
+
+    redirect(URL("default", "donate"))

views/default/about.html

@@ -5,7 +5,7 @@
 
 <h1>About Runestone</h1>
 
-<p>The mission of Runestone Academy is to <i>democratize textbooks for the 21st century.</i>  Do accomplish that mission we make high quality interactive textbooks available for free to all students.  In the 21st century it is silly to think of textbooks statically, so we make great interactive textbooks that engage students in their learning.  It would also be silly to ignore the rich data that an online textbook can provide to students, teachers, authors and researchers.  To support these different stakeholders we have created a Learning Engineering and Analytics Portal (LEAP).  That is quite a lot to digest so let us unpack that to see what it means in practical terms.</p>
+<p>The mission of Runestone Academy is to <i>democratize textbooks for the 21st century.</i>  To accomplish that mission we make high quality interactive textbooks available for free to all students.  In the 21st century it is silly to think of textbooks statically, so we make great interactive textbooks that engage students in their learning.  It would also be silly to ignore the rich data that an online textbook can provide to students, teachers, authors and researchers.  To support these different stakeholders we have created a Learning Engineering and Analytics Portal (LEAP).  That is quite a lot to digest so let us unpack that to see what it means in practical terms.</p>
 
 <ul class="simple">
 <li><p><strong>Learning Engineering</strong> is the systematic application of evidence-based principles and methods from educational technology and the learning sciences to create engaging and effective learning experiences, support the difficulties and challenges of learners as they learn, and come to better understand learners and learning.  Everything we do on Runestone Academy takes this engineering approach to continuous improvement.</p></li>