django-filter和普通查询的例子

框架(架构)  /  管理员 发布于 7年前   141

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_filtersfrom django import formsfrom django.db.models import Qfrom ofc.enum import STATUS_ENUMfrom ofc.models import SaleOrderfrom ofc.utils import code_select, date_divideclass 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。