Add get course by id endpoint (#98)

Author: katesliang

src/app/coursegrab/__init__.py

@@ -1,4 +1,5 @@
 from flask import Blueprint
+from app.coursegrab.controllers.get_course_by_id_controller import *
 from app.coursegrab.controllers.get_section_controller import *
 from app.coursegrab.controllers.hello_world_controller import *
 from app.coursegrab.controllers.initialize_session_controller import *
@@ -16,6 +17,7 @@
 coursegrab = Blueprint("coursegrab", __name__, url_prefix="/api")
 
 controllers = [
+    GetCourseByIDController(),
     GetSectionController(),
     HelloWorldController(),
     InitializeSessionController(),

src/app/coursegrab/controllers/get_course_by_id_controller.py

@@ -0,0 +1,18 @@
+from . import *
+
+class GetCourseByIDController(AppDevController):
+    def get_path(self):
+        return "/courses/<id>/"
+
+    def get_methods(self):
+        return ["GET"]
+
+    @authorize_user_selective
+    def content(self, **kwargs):
+        user = kwargs.get("user")
+        user_id = user.id if user else -1 
+
+        course_id = int(request.view_args["id"])
+
+        course = courses_dao.get_course_by_id(course_id)
+        return course.serialize_with_user(user_id)

src/app/coursegrab/dao/courses_dao.py

@@ -2,6 +2,9 @@
 from ..utils.constants import NUM_SEARCH_RESULT
 
 
+def get_course_by_id(course_id):
+    return Course.query.filter_by(id=course_id).first()
+
 def get_course_by_subject_and_course_num(subject_code, course_num):
     return Course.query.filter_by(subject_code=subject_code, course_num=course_num).first()
 
@@ -25,8 +28,8 @@ def search_courses(query):
 
 def find_query_index(course, key):
     try: 
-        return course.search_string.lower().index(key) 
-    except(Error): 
+        return course.search_string.lower().index(key.lower()) 
+    except(ValueError): 
         return -1
 
 def clear_table():

src/app/coursegrab/models/course.py

@@ -18,6 +18,7 @@ def __init__(self, **kwargs):
 
     def serialize(self):
         return {
+            "id": self.id,
             "subject_code": self.subject_code,
             "course_num": self.course_num,
             "title": self.title,
@@ -27,6 +28,7 @@ def serialize(self):
     # Adds `is_tracking` field for each section
     def serialize_with_user(self, user_id):
         return {
+            "id": self.id,
             "subject_code": self.subject_code,
             "course_num": self.course_num,
             "title": self.title,