94 lines
2.7 KiB
Python
94 lines
2.7 KiB
Python
from django.http.response import HttpResponse
|
||
from django.db.models import QuerySet
|
||
from datetime import datetime, date as datetime_date
|
||
from decimal import Decimal
|
||
import string
|
||
import random
|
||
import json
|
||
|
||
|
||
# 转换时间格式到字符串
|
||
def human_time(date=None):
|
||
if date:
|
||
assert isinstance(date, datetime)
|
||
else:
|
||
date = datetime.now()
|
||
return date.strftime('%Y-%m-%d %H:%M:%S')
|
||
|
||
|
||
# 转换时间格式到字符串(天)
|
||
def human_date(date=None):
|
||
if date:
|
||
assert isinstance(date, datetime)
|
||
else:
|
||
date = datetime.now()
|
||
return date.strftime('%Y-%m-%d')
|
||
|
||
|
||
# 解析时间类型的数据
|
||
def parse_time(value):
|
||
if isinstance(value, datetime):
|
||
return value
|
||
if isinstance(value, str):
|
||
if len(value) == 10:
|
||
return datetime.strptime(value, '%Y-%m-%d')
|
||
elif len(value) == 19:
|
||
return datetime.strptime(value, '%Y-%m-%d %H:%M:%S')
|
||
raise TypeError('Expect a datetime.datetime value')
|
||
|
||
|
||
# 传两个时间得到一个时间差
|
||
def human_diff_time(time1, time2):
|
||
time1 = parse_time(time1)
|
||
time2 = parse_time(time2)
|
||
delta = time1 - time2 if time1 > time2 else time2 - time1
|
||
if delta.seconds < 60:
|
||
text = '%d秒' % delta.seconds
|
||
elif delta.seconds < 3600:
|
||
text = '%d分' % (delta.seconds / 60)
|
||
else:
|
||
text = '%d小时' % (delta.seconds / 3600)
|
||
return '%d天%s' % (delta.days, text) if delta.days else text
|
||
|
||
|
||
def json_response(data='', error=''):
|
||
content = AttrDict(data=data, error=error)
|
||
if error:
|
||
content.data = ''
|
||
elif hasattr(data, 'to_dict'):
|
||
content.data = data.to_dict()
|
||
elif isinstance(data, (list, QuerySet)) and all([hasattr(item, 'to_dict') for item in data]):
|
||
content.data = [item.to_dict() for item in data]
|
||
return HttpResponse(json.dumps(content, cls=DateTimeEncoder), content_type='application/json')
|
||
|
||
|
||
# 继承自dict，实现可以通过.来操作元素
|
||
class AttrDict(dict):
|
||
def __setattr__(self, key, value):
|
||
self.__setitem__(key, value)
|
||
|
||
def __getattr__(self, item):
|
||
return self.__getitem__(item)
|
||
|
||
def __delattr__(self, item):
|
||
self.__delitem__(item)
|
||
|
||
|
||
# 日期json序列化
|
||
class DateTimeEncoder(json.JSONEncoder):
|
||
def default(self, o):
|
||
if isinstance(o, datetime):
|
||
return o.strftime('%Y-%m-%d %H:%M:%S')
|
||
elif isinstance(o, datetime_date):
|
||
return o.strftime('%Y-%m-%d')
|
||
elif isinstance(o, Decimal):
|
||
return float(o)
|
||
|
||
return json.JSONEncoder.default(self, o)
|
||
|
||
|
||
# 生成指定长度的随机数
|
||
def generate_random_str(length: int = 4, is_digits: bool = True) -> str:
|
||
words = string.digits if is_digits else string.ascii_letters + string.digits
|
||
return ''.join(random.sample(words, length))
|