cleanup for the assessment report and added chart
diff --git a/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.js b/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.js
index a359a5f..42b19eb 100644
--- a/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.js
+++ b/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.js
@@ -8,19 +8,27 @@
 			"label": __("Assessment Group"),
 			"fieldtype": "Link",
 			"options": "Assessment Group",
-			"reqd": 1
-		},		
-		{
-			"fieldname":"student_group",
-			"label": __("Student Group"),
-			"fieldtype": "Link",
-			"options": "Student Group",
-		},		
+			"reqd": 1,
+			"get_query": function() {
+				return{
+					filters: {
+						'is_group': 0
+					}
+				};
+			}
+		},
 		{
 			"fieldname":"course",
 			"label": __("Course"),
 			"fieldtype": "Link",
 			"options": "Course",
-		},		
+			"reqd": 1
+		},
+		{
+			"fieldname":"student_group",
+			"label": __("Student Group"),
+			"fieldtype": "Link",
+			"options": "Student Group"
+		}
 	]
-}
+};
diff --git a/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.py b/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.py
index ce029d7..b5a2fc1 100644
--- a/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.py
+++ b/erpnext/schools/report/course_wise_assessment_report/course_wise_assessment_report.py
@@ -7,64 +7,116 @@
 from collections import defaultdict
 
 def execute(filters=None):
-	print "======================================"
+	args = frappe._dict()
+	args["assessment_group"] = filters.get("assessment_group")
+	if args["assessment_group"] == "All Assessment Groups":
+		frappe.throw(_("Please select the assessment group other than 'All Assessment Groups'"))
 
-	assessment_group = filters.get("assessment_group")
-	student_group = filters.get("student_group")
-
-	if student_group:
-		course = frappe.db.get_value("Student Group", student_group, "course")
-		if not course:
-			frappe.throw(_("Student Group {0} is not linked with any course").format(student_group))
-		# student_group_list = [student_group]
+	args["course"] = filters.get("course")
+	args["student_group"] = filters.get("student_group")
+	if args["student_group"]:
+		cond = "and ap.student_group=%(student_group)s"
 	else:
-		course = filters.get("course")
-		if not course:
-			frappe.throw(_("Please select Student Group or Course"))
-		# student_group_list = frappe.get_list("Student Group", fields=["name"], filters={"program":program, "course":course})
+		cond = ''
 
-	# find assessment plan according to the student group list
-	assessment_plan = frappe.db.sql('''select ap.name, ap.student_group, apc.assessment_criteria, apc.maximum_score as max_score
-		from `tabAssessment Plan` ap, `tabAssessment Plan Criteria` apc
-		where ap.assessment_group=%s and ap.course=%s and ap.name=apc.parent and ap.docstatus=1
-		order by apc.assessment_criteria''', (assessment_group, course), as_dict=1)
-	print assessment_plan
+	# find all assessment plan linked with the filters provided
+	assessment_plan = frappe.db.sql('''
+		select
+			ap.name, ap.student_group, apc.assessment_criteria, apc.maximum_score as max_score
+		from
+			`tabAssessment Plan` ap, `tabAssessment Plan Criteria` apc
+		where
+			ap.assessment_group=%(assessment_group)s and ap.course=%(course)s and
+			ap.name=apc.parent and ap.docstatus=1 {0}
+		order by
+			apc.assessment_criteria'''.format(cond), (args), as_dict=1)
+
 	assessment_plan_list = set([d["name"] for d in assessment_plan])
-	student_group_list = set([d["student_group"] for d in assessment_plan])
-	assessment_criteria_list = set([(d["assessment_criteria"],d["max_score"]) for d in assessment_plan])
-	assessment_plan
 	if not assessment_plan_list:
 		frappe.throw(_("No assessment plan linked with this assessment group"))
 
-	assessment_result = frappe.db.sql('''select ar.student, ard.assessment_criteria, ard.grade, ard.score 
+	student_group_list = set([d["student_group"] for d in assessment_plan])
+	assessment_result = frappe.db.sql('''select ar.student, ard.assessment_criteria, ard.grade, ard.score
 		from `tabAssessment Result` ar, `tabAssessment Result Detail` ard
 		where ar.assessment_plan in (%s) and ar.name=ard.parent and ar.docstatus=1
-		order by ard.assessment_criteria''' %', '.join(['%s']*len(assessment_plan_list)), tuple(assessment_plan_list), as_dict=1)
+		order by ard.assessment_criteria''' %', '.join(['%s']*len(assessment_plan_list)),
+		tuple(assessment_plan_list), as_dict=1)
 
-	result_dict = defaultdict(list)
+	result_dict = defaultdict(dict)
+	kounter = defaultdict(dict)
 	for result in assessment_result:
-		result_dict[result.student].append(result.grade)
-		result_dict[result.student].append(result.score)
+		result_dict[result.student].update({frappe.scrub(result.assessment_criteria): result.grade,
+			frappe.scrub(result.assessment_criteria)+"_score": result.score})
+		if result.grade in kounter[result.assessment_criteria]:
+			kounter[result.assessment_criteria][result.grade] += 1
+		else:
+			kounter[result.assessment_criteria].update({result.grade: 1})
 
-	student_list = frappe.db.sql('''select sgs.group_roll_number, sgs.student, sgs.student_name 
+	student_list = frappe.db.sql('''select sgs.student, sgs.student_name
 		from `tabStudent Group` sg, `tabStudent Group Student` sgs
 		where sg.name = sgs.parent and sg.name in (%s)
-		order by sgs.group_roll_number asc''' %', '.join(['%s']*len(student_group_list)), tuple(student_group_list), as_list=1)
+		order by sgs.group_roll_number asc''' %', '.join(['%s']*len(student_group_list)),
+		tuple(student_group_list), as_dict=1)
 
-	data = []
 	for student in student_list:
-		tmp_list = student + result_dict[student[1]]
-		data.append(tmp_list)
+		student.update(result_dict[student.student])
+	data = student_list
 
-	return get_column(assessment_criteria_list), data
+	columns = get_column(list(set([(d["assessment_criteria"],d["max_score"]) for d in assessment_plan])))
+
+	grading_scale = frappe.db.get_value("Assessment Plan", list(assessment_plan_list)[0], "grading_scale")
+	grades = frappe.db.sql_list('''select grade_code from `tabGrading Scale Interval` where parent=%s''',
+		(grading_scale))
+	assessment_criteria_list = list(set([d["assessment_criteria"] for d in assessment_plan]))
+	chart = get_chart_data(grades, assessment_criteria_list, kounter)
+
+	return columns, data, None, chart
 
 def get_column(assessment_criteria):
-	columns = [ 
-		_("Batch Roll No") + "::60", 
-		_("Student ID") + ":Link/Student:90", 
-		_("Student Name") + "::160", 
-	]
+	columns = [{
+		"fieldname": "student",
+		"label": _("Student ID"),
+		"fieldtype": "Link",
+		"options": "Student",
+		"width": 90
+	},
+	{
+		"fieldname": "student_name",
+		"label": _("Student Name"),
+		"fieldtype": "Data",
+		"width": 160
+	}]
 	for d in assessment_criteria:
-		columns.append(d[0] + "::110")
-		columns.append("Score(" + str(int(d[1])) + ")::100")
+		columns.append({
+			"fieldname": frappe.scrub(d[0]),
+			"label": d[0],
+			"fieldtype": "Data",
+			"width": 110
+		})
+		columns.append({
+			"fieldname": frappe.scrub(d[0]) +"_score",
+			"label": "Score(" + str(int(d[1])) + ")",
+			"fieldtype": "Float",
+			"width": 100
+		})
 	return columns
+
+def get_chart_data(grades, assessment_criteria_list, kounter):
+	grades = sorted(grades)
+	chart_data = []
+	chart_data.append(["x"] + assessment_criteria_list)
+	for grade in grades:
+		tmp = [grade]
+		for ac in assessment_criteria_list:
+			if grade in kounter[ac]:
+				tmp.append(kounter[ac][grade])
+			else:
+				tmp.append(0)
+		chart_data.append(tmp)
+	return {
+		"data": {
+			"x": "x",
+			"columns": chart_data
+		},
+		"chart_type": 'bar',
+	}