python学习

common/libs/Helper.py

@@ -65,3 +65,63 @@ def ops_render( template,context = {} ):
 def getCurrentDate( format = "%Y-%m-%d %H:%M:%S"):
     #return datetime.datetime.now().strftime( format )
     return datetime.datetime.now()
+
+'''
+获取格式化的时间
+'''
+def getFormatDate( date = None ,format = "%Y-%m-%d %H:%M:%S" ):
+    if date is None:
+        date = datetime.datetime.now()
+
+    return date.strftime( format )
+
+
+'''
+根据某个字段获取一个dic出来
+'''
+def getDictFilterField( db_model,select_filed,key_field,id_list ):
+    ret = {}
+    query = db_model.query
+    if id_list and len( id_list ) > 0:
+        query = query.filter( select_filed.in_( id_list ) )
+
+    list = query.all()
+    if not list:
+        return ret
+    for item in list:
+        if not hasattr( item,key_field ):
+            break
+
+        ret[ getattr( item,key_field ) ] = item
+    return ret
+
+
+
+def selectFilterObj( obj,field ):
+    ret = []
+    for item in obj:
+        if not hasattr(item, field ):
+            break
+        if getattr( item,field )  in ret:
+            continue
+        ret.append( getattr( item,field ) )
+    return ret
+
+
+def getDictFilterField( db_model,select_filed,key_field,id_list ):
+    ret = {}
+    query = db_model.query
+    if id_list and len( id_list ) > 0:
+        query = query.filter( select_filed.in_( id_list ) )
+
+    list = query.all()
+    if not list:
+        return ret
+    for item in list:
+        if not hasattr( item,key_field ):
+            break
+        if getattr( item,key_field ) not in ret:
+            ret[getattr(item, key_field)] = []
+
+        ret[ getattr( item,key_field ) ].append(item )
+    return ret

common/libs/UploadService.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+from werkzeug.utils import secure_filename
+from application import app,db
+from common.libs.Helper import getCurrentDate
+import datetime
+import  os,stat,uuid
+from common.models.Image import Image
+class UploadService():
+	@staticmethod
+	def uploadByFile( file ):
+		config_upload = app.config['UPLOAD']
+		resp = { 'code':200,'msg':'操作成功~~','data':{} }
+		filename = secure_filename( file.filename )
+		ext = filename.rsplit(".",1)[1]
+		if ext not in config_upload['ext']:
+			resp['code'] = -1
+			resp['msg'] = "不允许的扩展类型文件"
+			return resp
+
+
+		root_path = app.root_path + config_upload['prefix_path']
+		#不使用getCurrentDate创建目录，为了保证其他写的可以用，这里改掉，服务器上好像对时间不兼容
+		file_dir = datetime.datetime.now().strftime("%Y%m%d")
+		save_dir = root_path + file_dir
+		if not os.path.exists( save_dir ):
+			os.mkdir( save_dir )
+			os.chmod( save_dir,stat.S_IRWXU | stat.S_IRGRP |  stat.S_IRWXO )
+
+		file_name = str( uuid.uuid4() ).replace("-","") + "." + ext
+		file.save( "{0}/{1}".format( save_dir,file_name ) )
+
+		model_image = Image()
+		model_image.file_key = file_dir + "/" + file_name
+		model_image.created_time = getCurrentDate()
+		db.session.add( model_image)
+		db.session.commit()
+
+		resp['data'] = {
+			'file_key': model_image.file_key
+		}
+		return resp

common/libs/UrlManager.py

@@ -14,4 +14,10 @@ class UrlManager(object):
         release_version = app.config.get('RELEASE_VERSION')
         ver = "%s" % (int(time.time())) if not release_version else release_version
         path =  "/static" + path + "?ver=" + ver
-        return UrlManager.buildUrl( path )
+        return UrlManager.buildUrl( path )
+
+    @staticmethod
+    def buildImageUrl( path ):
+        app_config = app.config['APP']
+        url = app_config['domain'] + app.config['UPLOAD']['prefix_url'] + path
+        return url

common/libs/food/FoodService.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+from application import app,db
+from common.models.food.FoodStockChangeLog import FoodStockChangeLog
+from common.models.food.Food import Food
+from common.libs.Helper import getCurrentDate
+class FoodService():
+
+    @staticmethod
+    def setStockChangeLog( food_id = 0,quantity = 0,note = '' ):
+
+        if food_id < 1:
+            return False
+
+        food_info = Food.query.filter_by( id = food_id ).first()
+        if not food_info:
+            return False
+
+        model_stock_change = FoodStockChangeLog()
+        model_stock_change.food_id = food_id
+        model_stock_change.unit = quantity
+        model_stock_change.total_stock = food_info.stock
+        model_stock_change.note = note
+        model_stock_change.created_time = getCurrentDate()
+        db.session.add(model_stock_change)
+        db.session.commit()
+        return True
+
+

common/models/Image.py

@@ -0,0 +1,12 @@
+# coding: utf-8
+from sqlalchemy import Column, DateTime, Integer, String
+from sqlalchemy.schema import FetchedValue
+
+from application import db
+
+class Image(db.Model):
+    __tablename__ = 'images'
+
+    id = db.Column(db.Integer, primary_key=True)
+    file_key = db.Column(db.String(60), nullable=False, server_default=db.FetchedValue())
+    created_time = db.Column(db.DateTime, nullable=False, server_default=db.FetchedValue())