Question

我试图从Django中的表单发布数据，当我点击提交时，它没有进入POST。我已经使用Django完成了一些POST，他们工作正常。这里，第一次呈现模板时，它进入NO POST，这是正确的。但是，在提交表单时，它表示无效。

urls.py

url(r'^traps/view/', 'servicios.views.viewtraps'),

forms.py

class LimitQueryForm(forms.Form):

    limit = forms.CharField(label='Nº de Resultados a Mostrar', max_length=250)

模板

<form action="/services/traps/view/" method="post">{% csrf_token %}
    {{ form_limit }}   
    <button type="submit" value="btn_limit_val" name="btn_limit_name">Aceptar</button>    
</form>

views.py

def viewtraps(request):

    connect_mysql = mdb.connect(*)
    cursorMYSQL = connect_mysql.cursor(mdb.cursors.DictCursor)
    cursorMYSQL.execute("""select eventname,eventid,trapoid,enterprise,community,hostname,agentip,category,severity,uptime,traptime,formatline,timestamp from snmptt order by id desc limit 500""")
    b = cursorMYSQL.fetchall()
    connect_mysql.close()

    form_limit = LimitQueryForm()

    if request.method == 'POST':

        if form_limit.is_valid():

            limit = "VALID"

            dictionary = RequestContext(request, {"buffer_data": b, "form_limit": form_limit, "limit": limit})
            return render_to_response("viewtraps.html", dictionary)

        else:

            limit = "NOT VALID"

            dictionary = RequestContext(request, {"buffer_data": b, "form_limit": form_limit, "limit": limit})
            return render_to_response("viewtraps.html", dictionary)

    else:   

        limit = "NO POST"

        dictionary = RequestContext(request, {"buffer_data": b, "form_limit": form_limit, "limit": limit})
        return render_to_response("viewtraps.html", dictionary)

我知道有些用户告诉我，我不应该这样使用django，我有理由这样做，请避免评论，因为它不是问题马上。谢谢！

Answer 1

问题在于form_limit的初始化，它是在不读取请求参数的情况下创建的。请尝试改为：

if request.method == 'POST':
    form_limit = LimitQueryForm(request.POST)
    ...
else:
    form_limit = LimitQueryForm()

供参考：https://docs.djangoproject.com/en/1.8/topics/forms/#the-view

Answer 2

吸尘器..

def viewtraps(request):
    # ... db connections        
    form_limit = LimitQueryForm(request.POST or None) #<--- this was your typo
    if form_limit.is_valid():
        limit = "VALID"
        dictionary = RequestContext(request, {"buffer_data": b, "form_limit": form_limit, "limit": limit})
        return render_to_response("viewtraps.html", dictionary)
    else:
        limit = "NOT VALID"
        dictionary = RequestContext(request, {"buffer_data": b, "form_limit": form_limit, "limit": limit})
        return render_to_response("viewtraps.html", dictionary)

    dictionary = RequestContext(request, {"buffer_data": b, "form_limit": form_limit, "limit": limit})
    return render_to_response("viewtraps.html", dictionary)

Django表格无效

2 个答案: