数据修改与删除

星哥玩云

发布于 2022-09-08 20:55:18

5730

发布于 2022-09-08 20:55:18

文章被收录于专栏：开源部署

一、修改

save值的修改

<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">updateView</span><span class="hljs-params">(req)</span>:</span>
    u = User.objects.get(pk=<span class="hljs-number">11</span>)
    u.username = <span class="hljs-string">'zhangsan'</span>
    u.save()
    <span class="hljs-keyword">return</span> HttpResponse(<span class="hljs-string">'save修改'</span>)

update的值的修改

<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">updateView</span><span class="hljs-params">(req)</span>:</span>
    u = User.objects.filter(id__in = [<span class="hljs-number">1</span>,<span class="hljs-number">2</span>,<span class="hljs-number">3</span>])
    u.update(sex=<span class="hljs-keyword">True</span>)
    <span class="hljs-keyword">return</span> HttpResponse(<span class="hljs-string">'update修改多个值'</span>)

区别

save适用于单个对象的值的修改
update 适用于多条数据的值的修改

二、删除

delete()

<span class="hljs-comment">#删除数据</span>
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">delete</span><span class="hljs-params">(req)</span>:</span>
		u = User.objects.get(pk=<span class="hljs-number">1</span>)
    u.delete()
    <span class="hljs-keyword">return</span> HttpResponse(<span class="hljs-string">'删除数据'</span>)

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对象