django list_filter 不可滚动

Question

我有一长串元素（50 个元素），我想在 django 管理面板中将其用作 list_filter。但是当我使用这个列表时，在 FILTER 面板出现的最右边我只能看到 20 个项目并且它不可滚动，所以剩下的 30 个被隐藏了。我怎样才能在 FILTER 部分获得这 30 个项目，或者如何滚动才能查看所有 50 个项目。

Answer 1

您可以为您的字段创建自定义过滤器并使用下拉列表作为选择器。我强烈建议使用 https://github.com/mrts/django-admin-list-filter-dropdown，它已经提供了几个过滤器。

如果您想创建自己的：

admin.py

from django.contrib.admin.filters import RelatedOnlyFieldListFilter

class RelatedOnlyDropdownFilter(RelatedOnlyFieldListFilter):
    template = 'filters/related_filter.html'

@admin.register(ModelName)
class YourModelAdmin(admin.ModelAdmin):
   
    list_filter = (      
        ('field', RelatedOnlyDropdownFilter),
    )

related_filter.html

{% load i18n %}
<script type="text/javascript">var filter_by_select = function(opt) { window.location = window.location.pathname + opt };</script>
<h3>{% blocktrans with title as filter_title %} By {{ filter_title }} {% endblocktrans %}</h3>
<ul class="admin-filter-{{ title|cut:' ' }}">
{% if choices|slice:"4:" %}
    <li>
    <select class="form-control"
        onchange="filter_by_select(this.options[this.selectedIndex].value)">
    {% for choice in choices %}
        <option{% if choice.selected %} selected="selected"{% endif %}
         value="{{ choice.query_string|iriencode }}">{{ choice.display }}</option>
    {% endfor %}
    </select>
    </li>
{% else %}

    {% for choice in choices %}
            <li{% if choice.selected %} class="selected"{% endif %}>
            <a href="{{ choice.query_string|iriencode }}">{{ choice.display }}</a></li>
    {% endfor %}

{% endif %}
</ul>

Answer 2

我建议你使用这个很棒的第三方。

django-admin-autocomplete-filter

如果您遇到问题，它易于使用且用户友好。

例如看这个。 models.py

from django.db import models

class Artist(models.Model):
    name = models.CharField(max_length=128)

class Album(models.Model):
    name = models.CharField(max_length=64)
    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
    cover = models.CharField(max_length=256, null=True, default=None)

admin.py

from django.contrib import admin
from admin_auto_filters.filters import AutocompleteFilter


class ArtistFilter(AutocompleteFilter):
    title = 'Artist' # display title
    field_name = 'artist' # name of the foreign key field


class ArtistAdmin(admin.ModelAdmin):
    search_fields = ['name'] # this is required for django's autocomplete functionality
    # ...


class AlbumAdmin(admin.ModelAdmin):
    list_filter = [ArtistFilter]

    """
        defining this class is required for AutocompleteFilter
        it's a bug and I am working on it.
    """
    class Media:
        pass

    # ...

django list_filter 不可滚动

django list_filter is not scrollable

django

python-3.x

django-admin-filters