班级api,schema,dao

dao/class_dao.py

@@ -14,7 +14,7 @@ def post_classes_dao( c , db ):
 
 def update_classes_dao( class_id , db , updates ):
     try :
-        db.query( Classes ).filter( Classes.id==class_id , Classes.is_deleted==0 ) .update( updates )
+        db.query( Classes ).filter( Classes.id == class_id , Classes.is_deleted == 0 ) .update( updates )
     except :
         db.rollback()
         return False
@@ -22,8 +22,35 @@ def update_classes_dao( class_id , db , updates ):
         db.commit()
         return True
 
-# def get_classes_dao( class_id , class_name ,  db ):
-#     try :
-#         r = db.query( Classes ).filter( Classes.id==class_id , Classes.is_deleted==0 ) .all()
-#     except :
-#         db.rollback()
+def get_classes_dao( class_id, class_no , class_name , page , page_size , db ):
+    q = db.query( Classes ).filter( Classes.is_deleted == 0 )
+    if class_id :
+        q = q.filter( Classes.id == class_id )
+    if class_no :
+        q = q.filter( Classes.class_no == class_no )
+    if class_name :
+        q = q.filter( Classes.class_name == class_name )
+    total = q.count()
+    r = q.offset( ( page-1 ) * page_size  ).limit( page_size ).all()
+    return total,[ { 'class_id':i.id
+                   , 'class_no':i.class_no
+                   , 'class_name':i.class_name
+                   , 'start_date':i.start_date
+                   , 'end_date':i.end_date
+                   , 'created_at':i.created_at
+                   , 'update_at':i.update_at
+                   }
+                      for i in r
+                 ]
+
+
+
+def delete_classes_dao( class_id , db  ):
+    try :
+        db.query( Classes ).filter( Classes.id == class_id , Classes.is_deleted == 0 ) .update( Classes.is_deleted == 1 )
+    except :
+        db.rollback()
+        return False
+    else :
+        db.commit()
+        return True