feat: added page to see progress of a batch

community/www/batch/progress.py

@@ -0,0 +1,64 @@
+import frappe
+from community.lms.models import Course
+from collections import defaultdict
+from . import utils
+
+def get_context(context):
+    utils.get_common_context(context)
+
+    exercise_name = frappe.form_dict.get("exercise")
+    if exercise_name:
+        exercise = frappe.get_doc("Exercise", exercise_name)
+    else:
+        exercise = None
+
+    context.exercise = exercise
+    context.report = BatchReport(context.course, context.batch)
+
+class BatchReport:
+    def __init__(self, course, batch):
+        self.submissions = get_submissions(batch)
+        self.exercises = self.get_exercises(course.name)
+
+        self.submissions_by_exercise = defaultdict(list)
+        for s in self.submissions:
+            self.submissions_by_exercise[s.exercise].append(s)
+
+    def get_exercises(self, course_name):
+        return frappe.get_all("Exercise", {"course": course_name}, ["name", "title"])
+
+    def get_submissions_of_exercise(self, exercise_name):
+        return self.submissions_by_exercise[exercise_name]
+
+def get_submissions(batch):
+    students = batch.get_students()
+    students_map = {s['email']: s for s in students}
+
+    names, values = nparams("s", students_map.keys())
+
+    sql = """
+    select owner, exercise, name, solution, creation, image
+    from (
+        select owner, exercise, name, solution, creation, image,
+            row_number() over (partition by owner, exercise order by creation desc) as ix
+        from `tabExercise Submission`) as t
+    where t.ix=1 and owner IN {}
+    """.format(names)
+
+    data = frappe.db.sql(sql, values=values, as_dict=True)
+
+    for row in data:
+        row['owner'] = students_map[row['owner']]
+    return data
+
+def nparams(name, values):
+    """Creates n paramters from a list of values for a db query.
+
+    >>> nparams("name", ["a", "b])
+    ("(%(name_1)s, %(name_2)s)", {"name_1": "a", "name_2": "b"})
+    """
+    keys = [f"{name}_{i}" for i, _ in enumerate(values, start=1)]
+    param_names = [f"%({k})s" for k in keys]
+    param_values = dict(zip(keys, values))
+    joined_names = "(" + ", ".join(param_names) + ")"
+    return joined_names, param_values