本文主要介绍了django admin search_fields placeholder 管理后台添加搜索框提示文字，分享给大家，具体如下：

如图, Django admin后台生成的搜索框, 默认是没有提示文字的, 不够友好; 网上也没搜到什么好的示例, 于是自己动手实现了一个

0. 已经存在的app名为carousel, 大致相当于如下操作/代码

$ python manage.py startapp carousel# settings.py```INSTALLED_APPS = [ ... 'carousel',]```# carousel/models.py```from django.db import models class Carousel(models.Model): community = models.IntegerField('小区ID') class Meta: verbose_name = verbose_name_plural = '轮播设置'```

1. 定制模板标签templatetags

mkdir -p carousel/templatetagstouch carousel/templatetags/__init__.pytouch carousel/templatetags/search_with_placeholder.py# carousel/templatetags/search_with_placeholder.pyfrom django.contrib.admin.templatetags.admin_list import ( InclusionAdminNode, register, search_form,) def search_form_plus(cl, search_placeholder: str = ""): """ Display a search form for searching the list with placeholder. """ return dict(search_form(cl), search_placeholder=search_placeholder) @register.tag(name="search_form_plus")def search_form_tag(parser, token): return InclusionAdminNode( parser, token, func=search_form_plus, template_name="search_form_plus.html", takes_context=False, )

2. 定制模板template

mkdir -p carousel/templates/adminmkdir -p carousel/templates/custom_admintouch carousel/templates/admin/search_form_plus.htmltouch carousel/templates/custom_admin/change_list.html<!-- carousel/templates/admin/search_form_plus.html -->{% load i18n static %}{% if cl.search_fields %}<div id="toolbar"><form id="changelist-search" method="get"><div><!-- DIV needed for valid HTML --><label for="searchbar"><img src="{% static "admin/img/search.svg" %}" alt="Search"></label><input type="text" size="40" name="{{ search_var }}" placeholder="{{ search_placeholder }}" value="{{ cl.query }}" id="searchbar" autofocus><input type="submit" value="{% translate 'Search' %}">{% if show_result_count %} <span class="small quiet">{% blocktranslate count counter=cl.result_count %}{{ counter }} result{% plural %}{{ counter }} results{% endblocktranslate %} (<a href="?{% if cl.is_popup %}_popup=1{% endif %}" rel="external nofollow" >{% if cl.show_full_result_count %}{% blocktranslate with full_result_count=cl.full_result_count %}{{ full_result_count }} total{% endblocktranslate %}{% else %}{% translate "Show all" %}{% endif %}</a>)</span>{% endif %}{% for pair in cl.params.items %} {% if pair.0 != search_var %}<input type="hidden" name="{{ pair.0 }}" value="{{ pair.1 }}">{% endif %}{% endfor %}</div></form></div>{% endif %}<!-- carousel/templates/custom_admin/change_list.html -->{% extends "admin/change_list.html" %}{% load search_with_placeholder %} {% block search %}{% search_form_plus cl search_placeholder %}{% endblock %}

3. 定制admin.py

cat carousel/admin.py

# Django3.1from django.contrib import admin from .models import BoxCarousel, Carousel, class PlaceholderMixin: change_list_template = "custom_admin/change_list.html" def changelist_view(self, request, extra_context=None): search_placeholder = getattr(self, "search_placeholder", False) if search_placeholder: extra_context = extra_context or {} extra_context["search_placeholder"] = search_placeholder return super().changelist_view(request, extra_context) @admin.register(Carousel)class CarouselAdmin(PlaceholderMixin, admin.ModelAdmin): search_fields = ["=community"] search_placeholder = "请输入小区ID"

其他列表页, 如果也想显示提示文字, 只需继承PlaceholderMixin, 然后定义search_placeholder就可以了

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