From b1bb4ede3795181ea57663f5f479e80d5ba8efa6 Mon Sep 17 00:00:00 2001
From: Muhammad Arslan <arslan.abdulrauf@arbisoft.com>
Date: Mon, 25 Nov 2024 18:23:38 +0500
Subject: [PATCH] feat(api): has_prerequisites field added in courses and
 programs API (#3306)

New field has_prerequisites added in courses and programs API for MIT Learn
---
 courses/serializers.py      | 22 ++++++++++++++++++++++
 courses/serializers_test.py |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/courses/serializers.py b/courses/serializers.py
index f2422ccd1..beff663a2 100644
--- a/courses/serializers.py
+++ b/courses/serializers.py
@@ -114,6 +114,16 @@ class CourseSerializer(serializers.ModelSerializer):
     platform = serializers.SerializerMethodField()
     marketing_hubspot_form_id = serializers.SerializerMethodField()
     availability = serializers.SerializerMethodField()
+    prerequisites = serializers.SerializerMethodField()
+
+    def get_prerequisites(self, instance):  # noqa: ARG002
+        """Get course prerequisites"""
+
+        # This is a hard coded value because the consumers of the API need this field.
+        # In an ideal situation the prerequisites could be list of courses.
+        # Since in xPRO we don't have support for prerequisites
+        # so we will not get/check for prerequisites
+        return []
 
     def get_availability(self, instance):  # noqa: ARG002
         """Get course availability"""
@@ -228,6 +238,7 @@ class Meta:
             "is_external",
             "platform",
             "availability",
+            "prerequisites",
         ]
 
 
@@ -292,6 +303,16 @@ class ProgramSerializer(serializers.ModelSerializer):
     credits = serializers.SerializerMethodField()
     platform = serializers.SerializerMethodField()
     availability = serializers.SerializerMethodField()
+    prerequisites = serializers.SerializerMethodField()
+
+    def get_prerequisites(self, instance):  # noqa: ARG002
+        """Get course prerequisites"""
+
+        # This is a hard coded value because the consumers of the API need this field.
+        # In an ideal situation the prerequisites could be list of courses.
+        # Since in xPRO we don't have support for prerequisites
+        # so we will not get/check for prerequisites
+        return []
 
     def get_availability(self, instance):  # noqa: ARG002
         """Get program availability"""
@@ -433,6 +454,7 @@ class Meta:
             "is_external",
             "platform",
             "availability",
+            "prerequisites",
         ]
 
 
diff --git a/courses/serializers_test.py b/courses/serializers_test.py
index e88148053..8e711c914 100644
--- a/courses/serializers_test.py
+++ b/courses/serializers_test.py
@@ -162,6 +162,7 @@ def test_serialize_program(  # noqa: PLR0913
             "marketing_hubspot_form_id": marketing_hubspot_form_id,
             "platform": program.platform.name,
             "availability": "dated",
+            "prerequisites": [],
         },
     )
     assert data["end_date"] != non_live_run.end_date.strftime(datetime_millis_format)
@@ -298,6 +299,7 @@ def test_serialize_course(  # noqa: PLR0913
             ),
             "platform": course.platform.name,
             "availability": "dated",
+            "prerequisites": [],
         },
     )