django-filter和普通查询的例子 - python基础

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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谷谷点程序。

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