Question

我正在尝试提交类似以下的javascript表单

node.on("click", function(d){
    var name =encodeURIComponent(d.ancestors()[0].data.id) ;

    var form = document.createElement("form");
    form.setAttribute("method", "post");
    form.setAttribute("action", "clickable_cluster");
    form.setAttribute("target", "_blank");
    var hiddenField = document.createElement("input"); 

  hiddenField.setAttribute("user_name", "{{user_name}}");
  hiddenField.setAttribute("thresh1", "{{thresh1}}");
  hiddenField.setAttribute("thresh2", "{{thresh2}}");
  hiddenField.setAttribute("thresh3", "{{thresh3}}");
  hiddenField.setAttribute("pthresh1", "{{pthresh1}}");
  hiddenField.setAttribute("pthresh2", "{{pthresh2}}");
  hiddenField.setAttribute("pthresh3", "{{pthresh3}}");
  hiddenField.setAttribute("node", "name");
  form.appendChild(hiddenField);
  document.body.appendChild(form);
  //window.open('', 'view');

    //window.location.assign("clickable_cluster", '_blank');
    form.submit();


  });

但是，后端的烧瓶服务器不会收到任何这些后置参数。

@app.route('/clickable_cluster', methods=['POST'])
def clicable_cluster():

    print "request got ", request.form.items() # is []

我错过了什么？感谢

Answer 1

您没有获得表单请求提交的任何数据的一般原因是因为表单请求通常会发送所有输入字段及其名称＆amp;作为内容的价值。

目前，您只在无名输入字段上设置属性。

您可以通过以下方式概括添加表单元素。 attachToForm函数将表单和对象作为输入参数，并为对象内的每个属性创建适当的输入字段。

function attachToForm( form, content ) {
  Object.keys( content ).forEach( prop => {
    var input = document.createElement('input');
    input.name = prop;
    input.value = content[prop];
    form.appendChild( input );
  });
}

node.on("click", function(d){
    var name =encodeURIComponent(d.ancestors()[0].data.id) ;

    var form = document.createElement("form");
    form.setAttribute("method", "post");
    form.setAttribute("action", "clickable_cluster");
    form.setAttribute("target", "_blank");

    attachToForm( form, {
      "user_name": "{{user_name}}",
      "thresh1": "{{thresh1}}",
      "thresh2": "{{thresh2}}",
      "thresh3": "{{thresh3}}",
      "pthresh1": "{{pthresh1}}",
      "pthresh2": "{{pthresh2}}",
      "pthresh3": "{{pthresh3}}",
      "node": "name"
    });
    document.body.appendChild(form);
    form.submit();
  });

我猜你发送的值是真实数据或渲染引擎的一部分的占位符，但通常应该这样做。

javascript帖子表单不发送帖子参数

1 个答案: