截止2021.11.26可用于django3.0的xadmin修改版

from __future__ import absolute_import from collections import OrderedDict from django.core.exceptions import FieldDoesNotExist from django.core.exceptions import PermissionDenied, ObjectDoesNotExist from django.core.paginator import InvalidPage, Paginator # from django.core.urlresolvers import NoReverseMatch from django.urls import NoReverseMatch from django.db import models from django.http import HttpResponseRedirect from django.template.response import SimpleTemplateResponse, TemplateResponse from django.utils import six from django.utils.encoding import force_text, smart_text from django.utils.html import escape, conditional_escape from django.utils.safestring import mark_safe from django.utils.text import capfirst from django.utils.translation import ugettext as _ from xadmin.util import lookup_field, display_for_field, label_for_field, boolean_icon from .base import ModelAdminView, filter_hook, inclusion_tag, csrf_protect_m # List settings ALL_VAR = 'all' ORDER_VAR = 'o' PAGE_VAR = 'p' TO_FIELD_VAR = 't' COL_LIST_VAR = '_cols' ERROR_FLAG = 'e' DOT = '.' # Text to display within change-list table cells if the value is blank. EMPTY_CHANGELIST_VALUE = _('Null') class FakeMethodField(object): """ This class used when a column is an model function, wrap function as a fake field to display in select columns. """ def __init__(self, name, verbose_name): # Initial comm field attrs self.name = name self.verbose_name = verbose_name self.primary_key = False class ResultRow(dict): pass class ResultItem(object): def __init__(self, field_name, row): self.classes = [] self.text = '&nbsp;' self.wraps = [] self.tag = 'td' self.tag_attrs = [] self.allow_tags = False self.btns = [] self.menus = [] self.is_display_link = False self.row = row self.field_name = field_name self.field = None self.attr = None self.value = None @property def label(self): text = mark_safe( self.text) if self.allow_tags else conditional_escape(self.text) if force_text(text) == '': text = mark_safe('&nbsp;') for wrap in self.wraps: text = mark_safe(wrap % text) return text @property def tagattrs(self): return mark_safe( '%s%s' % ((self.tag_attrs and ' '.join(self.tag_attrs) or ''), (self.classes and (' class="%s"' % ' '.join(self.classes)) or ''))) class ResultHeader(ResultItem): def __init__(self, field_name, row): super(ResultHeader, self).__init__(field_name, row) self.tag = 'th' self.tag_attrs = ['scope="col"'] self.sortable = False self.allow_tags = True self.sorted = False self.ascending = None self.sort_priority = None self.url_primary = None self.url_remove = None self.url_toggle = None class ListAdminView(ModelAdminView): """ Display models objects view. this class has ordering and simple filter features. """ list_display = ('__str__',) list_display_links = () list_display_links_details = False list_select_related = None list_per_page = 50 list_max_show_all = 200 list_exclude = () search_fields = () paginator_class = Paginator ordering = None # Change list templates object_list_template = None def init_request(self, *args, **kwargs): if not self.has_view_permission(): raise PermissionDenied request = self.request request.session['LIST_QUERY'] = (self.model_info, self.request.META['QUERY_STRING']) self.pk_attname = self.opts.pk.attname self.lookup_opts = self.opts self.list_display = self.get_list_display() self.list_display_links = self.get_list_display_links() # Get page number parameters from the query string. try: self.page_num = int(request.GET.get(PAGE_VAR, 0)) except ValueError: self.page_num = 0 # Get params from request self.show_all = ALL_VAR in request.GET self.to_field = request.GET.get(TO_FIELD_VAR) self.params = dict(request.GET.items()) if PAGE_VAR in self.params: del self.params[PAGE_VAR] if ERROR_FLAG in self.params: del self.params[ERROR_FLAG] @filter_hook def get_list_display(self): """ Return a sequence containing the fields to be displayed on the list. """ self.base_list_display = (COL_LIST_VAR in self.request.GET and self.request.GET[COL_LIST_VAR] != "" and \ self.request.GET[COL_LIST_VAR].split('.')) or self.list_display return list(self.base_list_display) @filter_hook def get_list_display_links(self): """ Return a sequence containing the fields to be displayed as links on the changelist. The list_display parameter is the list of fields returned by get_list_display(). """ if self.list_display_links or not self.list_display: return self.list_display_links else: # Use only the first item in list_display as link return list(self.list_display)[:1] def make_result_list(self): # Get search parameters from the query string. self.base_queryset = self.queryset() self.list_queryset = self.get_list_queryset() self.ordering_field_columns = self.get_ordering_field_columns() self.paginator = self.get_paginator() # Get the number of objects, with admin filters applied. self.result_count = self.paginator.count self.can_show_all = self.result_count <= self.list_max_show_all self.multi_page = self.result_count > self.list_per_page # Get the list of objects to display on this page. if (self.show_all and self.can_show_all) or not self.multi_page: self.result_list = self.list_queryset._clone() else: try: self.result_list = self.paginator.page( self.page_num + 1).object_list except InvalidPage: if ERROR_FLAG in self.request.GET.keys(): return SimpleTemplateResponse('xadmin/views/invalid_setup.html', { 'title': _('Database error'), }) return HttpResponseRedirect(self.request.path + '?' + ERROR_FLAG + '=1') self.has_more = self.result_count > ( self.list_per_page * self.page_num + len(self.result_list)) @filter_hook def get_result_list(self): return self.make_result_list() @filter_hook def post_result_list(self): return self.make_result_list() @filter_hook def get_list_queryset(self): """ Get model queryset. The query has been filted and ordered. """ # First, get queryset from base class. queryset = self.queryset() # Use select_related() if one of the list_display options is a field # with a relationship and the provided queryset doesn't already have # select_related defined. if not queryset.query.select_related: if self.list_select_related: queryset = queryset.select_related() elif self.list_select_related is None: related_fields = [] for field_name in self.list_display: try: field = self.opts.get_field(field_name) except FieldDoesNotExist: pass else: if isinstance(field.remote_field, models.ManyToOneRel): related_fields.append(field_name) if related_fields: queryset = queryset.select_related(*related_fields)