python - How do I fitler the intial table using django-tables2 and django-filter?
问题描述
I'm using django-tables2 and django-filter to list employees from a model. I'm having trouble filtering the initial table rendered. It's including all records. I want the initial table to only include employees where status=1. Then, have the filter take over.
views.py
from .models import Employee
from .tables import EmployeeTable
from .filters import EmployeeFilter
from .forms import EmployeeSearchForm
class EmployeeListView(SingleTableMixin, FilterView):
model = Employee
table_class = EmployeeTable
template_name = 'employees/employee_list.html'
filterset_class = EmployeeFilter
def get_table_data(self):
return Employee.objects.filter(status=1)
filters.py:
from django.db.models import Value, Q
from django import forms
from .models import Employee
class EmployeeFilter(django_filters.FilterSet):
search = django_filters.CharFilter(label='Search', method='search_filter')
inactive = django_filters.BooleanFilter(widget=forms.CheckboxInput, label='Inactive', method='include_inactive')
def search_filter(self, queryset, name, value):
return queryset.annotate(fullname=Concat('first_name', Value(' '), 'last_name')).filter(
Q(fullname__icontains=value) | Q(g_number__icontains=value)
)
def include_inactive(self, queryset, name, value):
expression = Q(status__in=[1,2,5]) if value else Q(status__in=[1,5])
return queryset.filter(expression)
class Meta:
model = Employee
fields = ['search', 'inactive']
tables.py:
from django.utils.html import format_html
from django.urls import reverse
import django_tables2 as tables
from .models import Employee
class EmployeeTable(tables.Table):
full_name = tables.Column(order_by=("first_name", "last_name"))
g_number = tables.Column(linkify=True)
selection = tables.columns.CheckBoxColumn(
accessor='pk',
attrs = { "th__input": {"onclick": "toggle(this)"}},
orderable=False
)
term = tables.Column(verbose_name=("Action"), empty_values=())
class Meta:
model = Employee
template_name = "django_tables2/bootstrap.html"
fields = ("selection", "g_number","full_name", 'org', 'job', 'status', 'term')
attrs = {
"class": "table table-hover",
"thead": {"class": "thead-dark"}
}
order_by = '-g_number'
解决方案
从 Django 过滤器文档中,您可以过滤过滤器类上的主要查询集。更新:要根据 self.request 中的属性设置 qs,只需检查该属性并进行相应过滤。
https://django-filter.readthedocs.io/en/master/guide/usage.html#filtering-the-primary-qs
class EmployeeFilter(django_filters.FilterSet):
[...]
@property
def qs(self):
parent = super().qs
filter_inactive = getattr(self.request, 'inactive', False)
if not filter_inactive:
return parent.filter(status=1)
return parent
推荐阅读
- spring-boot - 如何在不使用@Query Annotation的情况下从方法名称中仅检索Springboot中Crud Repository中单个列的值?
- laravel - Docker 上的 Laravel:[2002] 连接被拒绝
- database - 折扣 UML 图
- java - 从java中的时间戳按月分组火花数据集
- css - 如何在 JavaScript/CSS 中简单地创建图像反射效果?
- javascript - 如何创建三个同名函数,一个是回调,第二个是承诺,另一个是异步/等待
- python - ndarray和异构ndarray之间的操作
- ios - iOS 和 CouchDB 复制
- c# - 如何添加到 C# 反射中的列表?
- c - 如何为 FFI 创建一个包含可为空函数指针的结构?