feat: added cohort and subgroup pages

Issue #271

school/www/cohorts/cohort.py

@@ -0,0 +1,34 @@
+import frappe
+from . import utils
+
+def get_context(context):
+    context.no_cache = 1
+    if frappe.session.user == "Guest":
+        frappe.local.flags.redirect_location = "/login?redirect-to=" + frappe.request.path
+        raise frappe.Redirect()
+
+    course = utils.get_course()
+    cohort = course and get_cohort(course, frappe.form_dict["cohort"])
+
+    if not cohort:
+        context.template = "www/404.html"
+        return
+
+    utils.add_nav(context, "All Courses", "/courses")
+    utils.add_nav(context, course.title, "/courses/" + course.name)
+    utils.add_nav(context, "Cohorts", "/courses/" + course.name + "/cohorts")
+
+    context.course = course
+    context.cohort = cohort
+
+def get_cohort(course, cohort_slug):
+    cohort = utils.get_cohort(course, cohort_slug)
+
+    if cohort.is_mentor(frappe.session.user):
+        mentor = cohort.get_mentor(frappe.session.user)
+        sg = frappe.get_doc("Cohort Subgroup", mentor.subgroup)
+        frappe.local.flags.redirect_location = f"/courses/{course.name}/subgroups/{cohort.slug}/{sg.slug}"
+        raise frappe.Redirect
+    elif cohort.is_admin(frappe.session.user) or "System Manager" in frappe.get_roles():
+        return cohort
+