Django表单，提交前检查验证。（HTML）

对于常规html表单，我可以使用java脚本在submit上验证输入，这意味着submit按钮仅用于有效输入，因此不需要http响应。 然而，对于django表单，我不能做同样的事情。 html中的Django表单就是{{form}。 例如，{form.title}}是title的形式。

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因此，我正在寻找一种在前端验证Django表单的方法（HTML）。只有有效的输入是post，而不是Django特定的。这是一个前端Javascript框架工作。或者，如果您确定您的webapps的目标受众都是最新的面向浏览器的、支持HTML5的，那么请进行HTML表单验证（）

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如果您不想进行客户端验证并重复使用Django的验证代码，那么我建议使用ajax序列化并提交表单。您可以获得一个JSON回复并使用javascript对其进行解析，或者获取整个更新的表单（使用Django的模板引擎）并更新DOM。如果您需要样品，请告诉我您选择的方法。希望这有帮助

包含jquery验证程序

<script type="text/javascript" src="{% static 'js/jquery.validate.min.js' %}"></script>

在contact.html中

<form method="post" action="/contact/send/"  id="contact_wrap">

<div class="name">
<label class="label">Name  <span class="required">*</span></label>
<input name= "firstname" id="firstname" class="inputtext"  type="text" maxlength="20" size="12" placeholder="First Name"/>
</span>
</div>

<-- your code -->

</form>

<div class="button">
<input id="submitform" class="submitform" type="submit" name="submitform" value="Send" />
</div>

<script>
$(function() {
    $( "#contact_wrap" ).validate({

        errorClass: "my-error-class", //apply a css class for error if you have style for valid
        validClass: "my-valid-class", //apply a css class for error if you have style for error

        rules: {
            firstname: {
                required: true
            },

        },
        messages: {
            firstname: {
                required: "Please enter your First Name."                         
            },
        },
    });

});
</script>

发送表单时加载程序.gif

<div id="loadingDiv" class="hiddenClass">
<p><img src="{% static "images/ajax-loader.gif" %}" alt="loader" ><br/>Please wait... while we...<p>
</div>

请稍候。。。而我们…

您在contact.html中的表单代码

<form method="post" action="/contact/send/"  id="contact_wrap">

<div class="name">
<label class="label">Name  <span class="required">*</span></label>
<input name= "firstname" id="firstname" class="inputtext"  type="text" maxlength="20" size="12" placeholder="First Name"/>
</span>
</div>

<-- your code -->

</form>

<div class="button">
<input id="submitform" class="submitform" type="submit" name="submitform" value="Send" />
</div>

<script>
$(function() {
    $( "#contact_wrap" ).validate({

        errorClass: "my-error-class", //apply a css class for error if you have style for valid
        validClass: "my-valid-class", //apply a css class for error if you have style for error

        rules: {
            firstname: {
                required: true
            },

        },
        messages: {
            firstname: {
                required: "Please enter your First Name."                         
            },
        },
    });

});
</script>

名字*

contact.html中的提交按钮

<form method="post" action="/contact/send/"  id="contact_wrap">

<div class="name">
<label class="label">Name  <span class="required">*</span></label>
<input name= "firstname" id="firstname" class="inputtext"  type="text" maxlength="20" size="12" placeholder="First Name"/>
</span>
</div>

<-- your code -->

</form>

<div class="button">
<input id="submitform" class="submitform" type="submit" name="submitform" value="Send" />
</div>

<script>
$(function() {
    $( "#contact_wrap" ).validate({

        errorClass: "my-error-class", //apply a css class for error if you have style for valid
        validClass: "my-valid-class", //apply a css class for error if you have style for error

        rules: {
            firstname: {
                required: true
            },

        },
        messages: {
            firstname: {
                required: "Please enter your First Name."                         
            },
        },
    });

});
</script>

用于验证contact.html中表单的脚本

<form method="post" action="/contact/send/"  id="contact_wrap">

<div class="name">
<label class="label">Name  <span class="required">*</span></label>
<input name= "firstname" id="firstname" class="inputtext"  type="text" maxlength="20" size="12" placeholder="First Name"/>
</span>
</div>

<-- your code -->

</form>

<div class="button">
<input id="submitform" class="submitform" type="submit" name="submitform" value="Send" />
</div>

<script>
$(function() {
    $( "#contact_wrap" ).validate({

        errorClass: "my-error-class", //apply a css class for error if you have style for valid
        validClass: "my-valid-class", //apply a css class for error if you have style for error

        rules: {
            firstname: {
                required: true
            },

        },
        messages: {
            firstname: {
                required: "Please enter your First Name."                         
            },
        },
    });

});
</script>

$（函数（）{
$（“#联系包裹”）。验证({
errorClass:“我的错误类”，//如果您有有效的样式，请为错误应用css类
validClass:“我的有效类”//如果您有错误样式，请应用css类
规则：{
名字：{
必填项：true
},
},
信息：{
名字：{
必填：“请输入您的名字。”
},
},
});
});

在contact.html中提交之前检查验证 从加载div显示ajax-loader.gif

<script>
$( "#submitform" ).click(function() {
        if ($('#contact_wrap').valid()) $( "#loadingDiv" ).removeClass( "hiddenClass" ).addClass( "showClass" );
});
</script>

$（“#提交表单”）。单击（函数（）{
if（$（'#contact_wrap'）.valid（））$（“#loadingDiv”）.removeClass（“hiddenClass”）.addClass（“showClass”）；
});