def get_recipes(self, start, num):
start = str_to_int(start, 0)
num = str_to_int(num, 5)
if num < 1:
num = 5
if start < 0:
start = 0
return self.recipes.all()[start:num+start]
def get_recipe_list(cls, meat_labels, effect_labels, time_labels, order, desc, start, num):
'''
根据条件获取菜谱列表
meat_labels: 4,5 (string) - label ID 使用逗号连接
effect_labels: 1,2 (string) - 同上
time_labels: 3 (string) - 同上
order: calories (string) - 排序方式，默认是 calories，其他可选值：duration（烹饪时间），收藏数（暂不支持）
desc: false (string) - 是否倒序，默认是字符串 false，还可以是字符串 true
start: 0 (string) - 偏移，默认是0。都是字符串，函数里会做转换，转成数字
num: 10 (string) - 返回数量，默认是10。字符串
'''
recipes = cls.objects.all()
query = {'status__gt': 0}
# 逗号里面的是或 是并集 出现一个就好
if meat_labels is not None:
# 对 食材 进行筛选
query['meat_labels__id__in']=split_labels_into_list(meat_labels)
if effect_labels is not None:
query['effect_labels__id__in']=split_labels_into_list(effect_labels)
if time_labels is not None:
query['time_labels__id__in']=split_labels_into_list(time_labels)
if query:
print query
recipes = recipes.filter(**query);
print recipes
if order == 'duration':
recipes = recipes.order_by('duration')
else:
# 还有按照收藏数的排序，不过现在还没做
# 默认按照卡路里
recipes = recipes.order_by('calories')
if desc == 'true':
recipes = recipes.reverse()
start = str_to_int(start, 0)
num = str_to_int(num, 10)
# bug in django 1.8.3, filter duplicate
recipes = recipes.distinct()
if num < 1:
# 如果请求num数量小于 0 是不对的，改成 10
num = 10
if start < 0:
# 如果 start 是负数，改成 0
start = 0
return recipes[start:num + start]
def get_recipe_list(cls, labels, order, desc, start, num):
'''
根据条件获取菜谱列表
labels: 4,5 (string) - label ID 使用逗号连接
order: calories (string) - 排序方式，默认是 calories，其他可选值：duration（烹饪时间），收藏数（暂不支持）
desc: false (string) - 是否倒序，默认是字符串 false，还可以是字符串 true
start: 0 (string) - 偏移，默认是0。都是字符串，函数里会做转换，转成数字
num: 10 (string) - 返回数量，默认是10。字符串
'''
recipes = cls.objects.all().filter(status__gt=0)
# 逗号里面的是或 是并集 出现一个就好
if labels is not None:
# 对 食材 进行筛选
recipes = recipes.filter(labels__id__in=split_labels_into_list(labels))
if order == 'duration':
recipes = recipes.order_by('duration')
elif order == 'collection':
recipes = recipes.order_by('collection_count')
else:
# 还有按照收藏数的排序，不过现在还没做
# 默认按照卡路里
recipes = recipes.order_by('calories')
if desc == 'true':
recipes = recipes.reverse()
start = str_to_int(start, 0)
num = str_to_int(num, 10)
# bug in django 1.8.3, filter duplicate
recipes = recipes.distinct()
if num < 1:
# 如果请求num数量小于 0 是不对的，改成 10
num = 10
if start < 0:
# 如果 start 是负数，改成 0
start = 0
return recipes[start:num + start]