Update utils/instructor.py

- Use (department: Union[str, Department]
- Set default: default=Department.COMPUTER_SCIENCE

utils/instructor.py

@@ -1,41 +1,41 @@
-from typing_extensions import Self, Optional
-from pydantic import model_validator
-from sqlmodel import Field, Relationship
-
-
-from .person import Person
-from utils.enums.department import Department
-
-
-class Instructor(Person, table=True):
-    """
-    Represents an Instructor, inheriting from Person, with an additional department field.
-
-    Attributes:
-        department (Department): The  instructor's department.
-
-    Methods:
-        set_id() -> Self: An SQLmodel validator that automatically sets the instructor's ID with a "INS" prefix through handle_id method in the Person class.
-    """
-
-    department: Department = Field(sa_column=Field(sa_type=Department))
-
-    course_id: Optional[str] = Field(
-        default=None, foreign_key="course.id")
-    course: Optional["Course"] = Relationship(
-        back_populates="instructors")
-
-    @model_validator(mode='after')
-    def set_id(self) -> Self:
-        self.handle_id(prefix="INS")
-        return self
-
-    def __str__(self) -> str:
-        """
-        Returns a string representation of the instructor.
-
-        Returns:
-            str: A description of the instructor including their name, ID number, and department.
-        """
-
-        return f"Instructor(name: {self.name}, id: {self.id}, department: {self.department.value})"
+from typing_extensions import Self, Optional
+from pydantic import model_validator
+from sqlmodel import Field, Relationship
+
+
+from .person import Person
+from utils.enums.department import Department
+
+
+class Instructor(Person, table=True):
+    """
+    Represents an Instructor, inheriting from Person, with an additional department field.
+
+    Attributes:
+        department (Union[str, Department): The  instructor's department.
+
+    Methods:
+        set_id() -> Self: An SQLmodel validator that automatically sets the instructor's ID with a "INS" prefix through handle_id method in the Person class.
+    """
+
+    department: Union[str, Department] = Field(default=Department.COMPUTER_SCIENCE)
+
+    course_id: Optional[str] = Field(
+        default=None, foreign_key="course.id")
+    course: Optional["Course"] = Relationship(
+        back_populates="instructors")
+
+    @model_validator(mode='after')
+    def set_id(self) -> Self:
+        self.handle_id(prefix="INS")
+        return self
+
+    def __str__(self) -> str:
+        """
+        Returns a string representation of the instructor.
+
+        Returns:
+            str: A description of the instructor including their name, ID number, and department.
+        """
+
+        return f"Instructor(name: {self.name}, id: {self.id}, department: {self.department.value})"