设置default过滤器后。新建文章提交时报错artical matching query does not exist.怎么解决呢，各位大佬
<form action="{% url 'blog:edit_action' %}" method="post">
{% csrf_token %}
<input type="hidden" name="artical_id" value="{{ artical.id | default:'0' }}"/>
<label>文章标题
<input type="text" name="title" value="{{artical.title}}">
</label>
<br/>
<label>文章内容
<input type="text" name="content" value="{{ artical.content}}"/>
</label>
<br/>
<input type="submit" value="提交">
</form>
