Javascript 在Django表单中包含Dropzone表单时无法完成POST
这绝对是我一直以来最具杀伤力的五大问题! 我在Django有一个模型,运行良好。问题是,我想在这个表单中添加一个额外的字段——用于上传图像的small Dropzone.js区域。在给定的代码示例中,dropzone preview DIV正确地嵌入到主窗体中。当然,为了实现这一点,我以编程方式初始化了Dropzone 如果我注释myDropzone.processQueue()submit按钮将常规表单提交到视图,但没有使用Dropzone上载的图像。但是,如果执行了Javascript 在Django表单中包含Dropzone表单时无法完成POST,javascript,django,forms,post,dropzone.js,Javascript,Django,Forms,Post,Dropzone.js,这绝对是我一直以来最具杀伤力的五大问题! 我在Django有一个模型,运行良好。问题是,我想在这个表单中添加一个额外的字段——用于上传图像的small Dropzone.js区域。在给定的代码示例中,dropzone preview DIV正确地嵌入到主窗体中。当然,为了实现这一点,我以编程方式初始化了Dropzone 如果我注释myDropzone.processQueue()submit按钮将常规表单提交到视图,但没有使用Dropzone上载的图像。但是,如果执行了processQueue(
processQueue()
,它将覆盖主表单提交操作,并且只提交图像。剩下的内容当然会被忽略
我只想在其余的输入字段中提交图像,我想在Django表单中嵌入Dropzone,因为如果我将整个表单设置为Dropzone,并在那里添加输入字段……整个表单显示为拖放区域,样式也会混乱
为了使它更复杂,我为图像提供了额外的DB表,但我的视图准备额外处理请求中的图像,并将它们处理到数据库中。
接下来,我不得不以一种丑陋的方式在Dropzone中手动提供CSRF(使用参数:{..}
),因为Dropzone无法识别表单模板引擎中的CSRF(因为它显然是另一种形式):(
以下是模板:
<h1 class="asdf-page-title">
Add Type
</h1>
<form id="gift-form" class="dropzone-form" method="POST" enctype="multipart/form-data">
{% csrf_token %}
{{ g_form.title }}
<p class="asdf-form-title">Select Type:</p>
<div class="asdf-form-pic-select row collapse-outer-space ">
{% for choice in g_form.asdf_type %}
<div class="col-4">
<label class="type-{{ choice.choice_label }}">
{{ choice.tag }}
<span>{% trans choice.choice_label %}</span>
</label>
</div>
{% endfor %}
</div>
<p class="asdf-form-title">Price:</p>
<div class="asdf-type row collapse-outer-space ">
<div class="col-4">
{{ g_form.total_price }}
</div>
<div class="col-8">
{{ g_form.currency }}
</div>
</div>
<p class="asdf-form-title">Description:</p>
{{ g_form.description }}
<div class="dropzone dropzone-previews" id="my-awesome-dropzone"></div>
<p>
<input id="submit-btn" type="submit" value="{{ action_btn }}"
</p>
</form>
<link href="{% static 'admin-users/js/ckeditor/samples/css/samples.css' %}" rel="stylesheet" type="text/css"/>
<link href="{% static 'admin-users/css/dropzone.css' %}" type="text/css" rel="stylesheet"/>
<script src="{% static 'admin-users/js/dropzone.js' %}"></script>
<script src="{% static 'admin-users/js/jquery-2.2.4.min.js' %}" type="text/javascript"></script>
<script src="{% static 'admin-users/js/ckeditor/ckeditor.js' %}" type="text/javascript"></script>
<script>
Dropzone.autoDiscover = false;
jQuery(document).ready(function() {
var myyDropzone = new Dropzone("div#my-awesome-dropzone", {
url: "#",
params: {'csrfmiddlewaretoken': getCookie('csrftoken')},
autoProcessQueue: false,
addRemoveLinks: true,
maxFilesize: 256 * 4 * 2,
maxFiles: 3,
uploadMultiple: true,
parallelUploads: 10,
init: function() {
var myDropzone = this,
addButton = document.querySelector("#submit");
// First change the button to actually tell Dropzone to process the queue.
addButton.addEventListener("click", function(e) {
// Make sure that the form isn't actually being sent.
e.preventDefault();
e.stopPropagation();
myDropzone.processQueue();
});
// Listen to the sendingmultiple event. In this case, it's the sendingmultiple event instead
// of the sending event because uploadMultiple is set to true.
this.on("sendingmultiple", function() {
// Gets triggered when the form is actually being sent.
// Hide the success button or the complete form.
});
this.on("successmultiple", function(files, response) {
// Gets triggered when the files have successfully been sent.
// Redirect user or notify of success.
});
this.on("errormultiple", function(files, response) {
// Gets triggered when there was an error sending the files.
// Maybe show form again, and notify user of error
});
},
sending: function (file, xhr, formData) {
// Along with the file, shall I append all fields from the form above in the formData?
}
});
});
function getCookie(name) {
var cookieValue = null;
if (document.cookie && document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
</script>
添加类型
{%csrf_令牌%}
{{g_form.title}
选择类型:
{%用于g_形式的选择。asdf_类型%}
{{choice.tag}
{%trans choice.choice_label%}
{%endfor%}
价格:
{{g_form.total_price}}
{{g_form.currency}}
说明:
{{g_form.description}}
我们通过向服务器发出两个请求来解决这个问题:一个是针对常规Django表单及其所有数据的Post,另一个是针对上传图像(如果有的话)的Dropzone Ajax
这是通过将上传的图像
添加到Dropzone
的sending
功能中的formdata
来实现的
如果有任何上传的图像,将调用myDropzone.processQueue()
,否则我们将使用$(“.dropzone form”).submit()在JavaScript中手动提交表单
如果执行了myDropzone.processQueue()
,那么我们将钩住Dropzone
事件successmultiple
并执行$(“.Dropzone表单”).submit()
一秒钟后。我们为什么要这样做?Dropzone将等待所有图像上传,然后它将立即触发successmultiple
。如果我们直接在那里提交表单,用户将错过Dropzone的精彩动画,该动画显示在所有上传的图像上放置绿色标记。动画持续时间约为10分钟现在我还没有找到比设置超时1秒更好的方法
代码如下:
Dropzone.autoDiscover = false;
if ($("#my-awesome-dropzone").length > 0){
var myyDropzone = new Dropzone("#my-awesome-dropzone", {
url: "some_url",
autoProcessQueue: false,
method: "post",
addRemoveLinks: true,
maxFilesize: 256 * 4 * 10,
maxFiles: 3,
uploadMultiple: true,
parallelUploads: 10,
init: function () {
var myDropzone = this;
var addButton = $("#submit-btn");
// First change the button to actually tell Dropzone to process the queue.
addButton.addEventListener("click", function (e) {
// Make sure that the form isn't actually being sent.
e.preventDefault();
e.stopPropagation();
if (myDropzone.getQueuedFiles().length > 0) {
myDropzone.processQueue();
} else {
$(".dropzone-form").submit();
}
});
this.on("successmultiple", function (files, response) {
setTimeout(function () {
$(".dropzone-form").submit();
}, 1000);
});
},
sending: function (file, xhr, formData) {
formData.append('csrfmiddlewaretoken', getCookie('csrftoken'));
formData.append("image", file.name);
}
});
}
你解决了你的问题吗?是的,问题已经解决了,请检查我下面的答案。已经快一年了,所以我尝试粘贴和调整工作代码。你能尝试一下,让我知道你是否需要帮助或进一步解释吗?非常感谢!我刚刚更改了var addButton=$(“#submit btn”);by addButton=document.querySelector(“#submit”);谢谢,通过以下方式将我的字段添加到formData变量:formData.append(“description”、$(“#id_description”).val();如果我们向服务器发出两个请求,我们将如何跟踪与哪个映像关联的记录?