Added semesters page and dropdown

advlabdb/routes.py

@@ -3,6 +3,20 @@ from flask import render_template, request, url_for
 from advlabdb.utils import *
 from advlabdb.models import *
 
+activeSemester_id = Semester.query.all()[-1].id
+
+@app.context_processor
+def util_processor():
+    def semesterDropDownItems():
+        semesters = Semester.query.all()
+        items = []
+        for semester in semesters:
+            items.append('<li><a class="dropdown-item" href="' + url_for("set_semester") + "?semester_id=" +
+                         str(semester.id) + '">' + semester.label + '</a></li>')
+        return items
+    return dict(semesterDropDownItems=semesterDropDownItems,
+                activeSemesterLabel=Semester.query.get(activeSemester_id).label)
+
 @app.route("/")
 def index():
     page = "index"
@@ -10,7 +24,7 @@ def index():
 
 @app.route("/students")
 def students():
-    semester = Semester.query.all()[-1]
+    semester = Semester.query.get(activeSemester_id)
     parts = semester.parts
     tables = []
     tablesLabels = []
@@ -57,7 +71,7 @@ def assistants():
 
 @app.route("/experiments")
 def experiments():
-    semester = Semester.query.all()[-1]
+    semester = Semester.query.get(activeSemester_id)
     parts = semester.parts
     tables = []
     tablesLabels = []
@@ -83,7 +97,7 @@ def appointments():
 
 @app.route("/groups")
 def groups():
-    semester = Semester.query.all()[-1]
+    semester = Semester.query.get(activeSemester_id)
     parts = semester.parts
     tables = []
     tablesLabels = []
@@ -115,3 +129,22 @@ def users():
     page = "users"
     return render_template(page + ".html", navbarItems=navbarItems(page),
                            table=table)
+
+@app.route("/set_semester", methods=["GET"])
+def set_semester():
+    global activeSemester_id
+    activeSemester_id = int(request.args.get("semester_id"))
+    page = "index"
+    return render_template(page + ".html", navbarItems=navbarItems(page))
+
+@app.route("/semesters")
+def semesters():
+    headerAndDataList = [["Label", "row.label"],
+                         ["Parts", "row.parts"]]
+
+    table = makeTable(headerAndDataList=headerAndDataList,
+                      rows=Semester.query.all())
+
+    page = "semesters"
+    return render_template(page + ".html", navbarItems=navbarItems(page),
+                           table=table)

advlabdb/templates/layout.html

@@ -22,13 +22,27 @@
     <nav class="navbar navbar-expand-lg navbar-light bg-light">
       <div class="container-fluid">
         <a class="navbar-brand" href="{{url_for('index')}}">AdvLabDB</a>
-        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
+        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbar" aria-controls="navbar" aria-expanded="false" aria-label="Toggle navigation">
           <span class="navbar-toggler-icon"></span>
         </button>
-        <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
-          <div class="navbar-nav">
-            {{navbarItems|safe}}
-          </div>
+        <div class="collapse navbar-collapse" id="navbar">
+          <ul class="navbar-nav">
+            {% for item in navbarItems %}
+            <li class="nav-item">
+              {{item|safe}}
+            </li>
+            {% endfor %}
+            <li class="nav-item dropdown">
+              <a class="nav-link dropdown-toggle" id="navbarDropdownMenuLink" role="button" data-bs-toggle="dropdown" aria-expanded="false">
+                Semester {{activeSemesterLabel}}
+              </a>
+              <ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
+                {% for item in semesterDropDownItems() %}
+                {{item|safe}}
+                {% endfor %}
+              </ul>
+            </li>
+          </ul>
         </div>
       </div>
     </nav>

advlabdb/templates/semesters.html

@@ -0,0 +1,6 @@
+{% extends "layout.html" %}
+{% block content %}
+
+{{table|safe}}
+
+{% endblock content %}

advlabdb/utils.py

@@ -1,17 +1,20 @@
 def navbarItems(activePage):
-    pages = ["Students", "Assistants", "Experiments", "Appointments", "Groups", "Users"]
-    items = ""
+    pages = ["Students", "Assistants", "Experiments", "Appointments", "Groups", "Users", "Semesters"]
+    items = []
     for page in pages:
         active = ""
         lowerPage = page.lower().replace(" ", "_")
         if lowerPage == activePage:
             active = " active"
-        items += '<a class="nav-link' + active + '" href="' + lowerPage + '">' + page + '</a>'
+        items.append('<a class="nav-link' + active + '" href="' + lowerPage + '">' + page + '</a>')
     return items
 
 def makeTable(headerAndDataList, rows):
     def cellString(cell):
         cell = str(cell)
+        if cell == "[]":
+            return "<em>None</em>"
+
         excludeChars = """<>"'[]"""
         for c in excludeChars:
             if c in cell:

testDB.py

@@ -13,12 +13,14 @@ db.session.add(student1)
 db.session.add(student2)
 db.session.add(student3)
 
-sem = Semester(label="SS2021")
+sem1 = Semester(label="WS2021")
+sem2 = Semester(label="SS21")
 
-db.session.add(sem)
+db.session.add(sem1)
+db.session.add(sem2)
 
-parta1 = Part(label="A/1", semester=sem)
-partb2 = Part(label="B/2", semester=sem)
+parta1 = Part(label="A/1", semester=sem2)
+partb2 = Part(label="B/2", semester=sem2)
 
 db.session.add(parta1)
 db.session.add(partb2)