中岁颇好道，晚家南山陲。兴来美独往，胜事空自知。一些风景再好，终不属于自己;有些情感，路过交错，已然是最好的结局。
pythong在使用中，尤其是django的查询过程中插件还是不少的，最近发现了一个插件django-filter ，还挺好用的
1.最原始直接根据条件查询
def search(request):
request.encoding = 'utf-8'
if 'platform_order_code' in request.POST:
code = request.POST['platform_order_code']
q1 = Q(code__contain=code)
sale_orders = SaleOrder.objects.filter(q1)
response = TemplateResponse(request, 'ofc/saleorder_manage.html',
{
"savorier": sale_orders,
})
return response
2、djamgo-filter插件查询，根据filter中的查询条件自动生成查询的额对话框，文本框，下拉框等；
（https://django-filter.readthedocs.io/en/master/guide/install.html）
def query_saleorder(request):
today = datetime.datetime.now()
start_today = datetime.datetime(today.year, today.month, today.day, 0, 0, 0)
sale_orders = SaleOrder.objects.filter(create_time__gt=start_today)
my_param = request.GET.get('status')
# 如果有参数，则从所有订单中筛选
if(my_param):
filter = SaleOrderFilter(request.GET, queryset=SaleOrder.objects.all())
# 如果没有参数的，则默认查询今天的
else:
filter = SaleOrderFilter(request.GET, queryset=sale_orders)
# filter = SaleOrderFilter(request.GET, queryset=SaleOrder.objects.all())
menus = SysPermission.objects.using("DB2").filter(level=1)[0:5]
return render(request, 'ofc/list.html', {'filter': filter, "menus": menus})
对应的filter.py的处理
widget可以给对应的生成的空间添加class等样式
import django_filters
from django import forms
from django.db.models import Q
from ofc.enum import STATUS_ENUM
from ofc.models import SaleOrder
from ofc.utils import code_select, date_divide
class SaleOrderFilter(django_filters.FilterSet):
def select_code(queryset, name, value):
print(name)
return code_select(value)
def select_date(queryset, name, value):
create_time = date_divide(value)
date_start = create_time['start_time']
date_end = create_time['end_time']
# 在已经查出来的其他参数的基础上增加查询条件
return queryset.filter(create_time__gt=date_start, create_time__lt=date_end)
class Meta:
model = SaleOrder
fields = {'status': ['exact'],
'code': [],
'create_time': [],
}
create_time = django_filters.CharFilter(method='select_date',
widget=forms.TextInput(attrs={'class': 'form-control daterange-time',
'name': 'date',
}))
status = django_filters.ChoiceFilter(choices=STATUS_ENUM,
widget=forms.Select(attrs={'class': 'select',
'name': 'status',
'data-width': '100%'}))
code = django_filters.CharFilter(method='select_code', name='code',
widget=forms.TextInput(attrs={'name': 'platform_order_code',
'class': 'form-control',
'placeholder': '订单号'}))
对应前端的结果集
{% csrf_token %}
{% for foo in filter.qs %}
<tr>
<td>{{ foo.platform_order_code }}</td>
<td>{{ foo.code }}</td>
</tr>
{% endfor %}
django-filter对应的前端的form：
{{ filter.form.as_p }}
以上这篇django-filter和普通查询的例子就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。
