django默认显示只读页面，点击编辑之后再进入编辑页面

admin.py

@admin.register(m.Article)
class ArticleAdmin(admin.ModelAdmin):
    def get_readonly_fields(self, request, obj=None):
        if 'edit' in request.GET or '/add/' == request.path[-5:]:
            return self.readonly_fields
        else:
            return self.get_fields(request, obj)

change_form.html

{% extends "admin/change_form.html" %}

{% load i18n admin_urls static admin_modify %}

{% block object-tools-items %}
    {% if not request.GET.edit %}
        <li><a href="?edit=1">修改</a></li>
    {% endif %}
    {{ block.super }}
{% endblock %}

{% if save_on_top %}{% block submit_buttons_top %}{% if add or request.GET.edit %}{% submit_row %}{% endif %}{% endblock %}{% endif %}

{% block submit_buttons_bottom %}
    {% if add or request.GET.edit %}{% submit_row %}{% endif %}
{% endblock %}

效果演示：