老师模块

dao/teacher_course_dao.py

@@ -0,0 +1,24 @@
+from model.teacher_model import TeacherCourse
+
+
+def add_teacher_course_dao(t,db):
+    try:   #判断是都已存在
+        r = db.query(TeacherCourse).filter(TeacherCourse.teacher_id==t['teacher_id']).first()
+        if r:
+            return None   #已存在，交给上层判断
+        obj = TeacherCourse(**t)
+        db.add(obj)
+        db.commit()
+        db.refresh(obj)  #拿回自增id，create_time等
+        return obj
+    except Exception:
+        db.rollback()
+        return False
+
+
+def get_teacher_course_dao(teacher_id=None,db=None):
+    q = db.query(TeacherCourse)
+    if teacher_id:
+        q = q.filter(TeacherCourse.teacher_id==teacher_id)
+    return q.all()   #返回ORM对象列表
+

dao/teacher_dao.py

@@ -0,0 +1,53 @@
+from model.teacher_model import Teacher
+
+
+def add_teacher_dao(t,db):
+    try:   #判断是都已存在
+        r = db.query(Teacher).filter(Teacher.teacher_id==t['teacher_id']).first()
+        if r:
+            return None   #已存在，交给上层判断
+        obj = Teacher(**t)
+        db.add(obj)
+
+        db.commit()
+        db.refresh(obj)  #拿回自增id，create_time等
+        return obj
+    except Exception:
+        db.rollback()
+        return False
+
+def update_teacher_dao(teacher_id,data,db):   #data:新增的内容
+    try:   #数据更新有返回值，返回的是影响的行数
+        rows = db.query(Teacher).filter(Teacher.teacher_id == teacher_id).update(data)
+        db.commit()
+        return rows
+    except Exception:
+        db.rollback()
+        return False
+
+
+
+
+def get_teacher_dao(teacher_id=None,teacher_name=None,db=None):
+    q = db.query(Teacher)
+    if teacher_id:
+        q = q.filter(Teacher.teacher_id==teacher_id)
+    if teacher_name:
+        q = q.filter(Teacher.teacher_name.like (f'%{teacher_name}%'))
+    return q.all()   #返回ORM对象列表
+
+
+
+def delete_teacher_dao(teacher_id,db):
+    try:    #删除有返回值，删除的行数
+        rows = (db.query(Teacher)
+             .filter(Teacher.teacher_id == teacher_id)
+             .delete())
+        db.commit()
+        return rows
+    except Exception:
+        db.rollback()
+        return 0
+
+
+