刪除功能

（1）kingadmin/urls.py

#刪除
    url(r'^(\w+)/(\w+)/(\d+)/delete/$', views.table_obj_delete,name='obj_delete'),

（2）table_obj_change_component.html

（3）kingamdin/views.py

def table_obj_delete(request,app_name,model_name,obj_id):
    '''刪除功能'''
    admin_class = site.enable_admins[app_name][model_name]
    obj 
 
= admin_class.model.objects.get(id=obj_id)

    return render(request,'kingadmin/table_obj_delete.html',locals())

（4）新建table_obj_delete.html

{#kingadmin/templates/kingadmin/table_obj_delete.html#}

{% extends 'kingadmin/index.html' %}
{% load kingadmin_tags %}

{% block right-content-container %}
    
 
<h2 class="page-header">{% get_model_name admin_class %}</h2>
    <h4 class="page-header">刪除{{ form_obj.instance }}</h4>

<div>
delete
{{ obj }}


</div>

{% endblock %}

（5）kingadmin_tags.py

@register.simple_tag
def display_all_related_objs(obj):
    """
    顯示要被刪除物件的所有關聯物件
    
 
"""
    ele = "<ul><b style='color:red'>%s</b>" % obj

    #獲取所有反向關聯的物件
    for reversed_fk_obj in obj._meta.related_objects:
        #獲取所有反向關聯物件的表名
        related_table_name =  reversed_fk_obj.name
        # 通過表名反向查所有關聯的資料
        related_lookup_key = "%s_set" % related_table_name
        related_objs = getattr(obj,related_lookup_key).all()
        ele += "<li>%s<ul> "% related_table_name
        #get_internal_type(),獲取欄位的型別，如果是m2m，就不需要深入查詢
        if reversed_fk_obj.get_internal_type() == "ManyToManyField":  # 不需要深入查詢
            for i in related_objs:
                ele += "<li><a href='/kingadmin/%s/%s/%s/change/'>%s</a> 記錄裡與[%s]相關的的資料將被刪除</li>" \
                       % (i._meta.app_label,i._meta.model_name,i.id,i,obj)
        #如果不是m2m，就遞迴查詢所有關聯的資料
        else:
            for i in related_objs:
                ele += "<li><a href='/kingadmin/%s/%s/%s/change/'>%s</a></li>" %(i._meta.app_label,
                                                                                 i._meta.model_name,
                                                                                 i.id,i)
                #遞迴查詢
                ele += display_all_related_objs(i)

        ele += "</ul></li>"

    ele += "</ul>"

    return ele

（6）table_obj_change_component.html

（7）table_obj_delete.html

{#kingadmin/templates/kingadmin/table_obj_delete.html#}

{% extends 'kingadmin/index.html' %}
{% load kingadmin_tags %}

{% block right-content-container %}
    <h2 class="page-header">{% get_model_name admin_class %}</h2>
    <h3 class="page-header alert alert-danger">你確定要刪除嗎？{{ form_obj.instance }}</h3>

<div>
delete {{ obj }}

{% display_all_related_objs obj as all_related_obj_eles %}
{{ all_related_obj_eles|safe }}

<form method="post">
    {% csrf_token %}
    <input type="submit" class="btn btn-danger" value="確認刪除">
    <a class="btn btn-info" >返回</a>

</form>
</div>
{% endblock %}