详解flask表单提交的两种方式

一.通用方式

通用方式就是使用ajax或者$.post来提交。

前端html

<form method="post" action="/mockservice" method = "post">
   ... 

  <div class="form-group">
    <label>data <font style="color:#a94442" size="2">
    <input class="form-control" id="data" name="data">
  </div>
  <div class="form-group">
    <button id="start" type="submit" class="btn btn-default">Submit &nbsp</button>
  </div>
</form>

将操作绑定

$(document).ready(function() {
  MockTask.start();
});

MockTask ={
  startId: "start_mock",
  start: function(){
    $('#'+this.startId).click(function (){
        ...var data = $('#data').val();

      var form_data = JSON.stringify({
       ..."data": data
      });
      MockSubmit.createTask(form_data);

    });
  },
};

MockSubmit = {
  createTask: function(data){
    var url = "/mockservice";
    $.post(url,data,function(result){
      if (result.code != 'SUCC'){
        alert("failed to create a new api.")
      } else {
        alert("succ");
      }
    });
  }
};

function isEmptyString(info) {
  if (info == null || info == undefined || info.length == 0){
    return true;
  }
  return false
}

这样通过js来实现提交表单的功能,然后flask后端

@app.route("/mockservice",methods=['GET','POST'])
def MockController():
  form = MockCreate()
  if request.method == 'POST':
    code = request.form['code']
    api = request.form['api']
  return ...


通用方式的好处就是在其他框架中也适用。而且也并不复杂。

二.比较正宗的flask方式

前端html:

<form method="post" action="/mockservice" method = "post">
   ...

  <div class="form-group">
    <label>data <font style="color:#a94442" size="2">
    <input class="form-control" id="data" name="data">
  </div>
  <div class="form-group">
    <button type="submit" class="btn btn-default">Submit &nbsp</button>
  </div>
</form>

前端这时候可以不用绑定操作了,但需要新建一个form对象,用这种方式的好处就是flask有很多内置的方式帮你校验你的提交,一个字:省事!

class MockCreate(Form):
  user_email = StringField("email address",[validators.Email()])
  api = StringField("api",[Required()])
  submit = SubmitField("Submit")
  code = IntegerField("code example: 200",[Required()])
  alias = StringField("alias for api")
  data = TextAreaField("json format",[Required()])

后端这时候就要变成:

@app.route("/mockservice",methods=['GET','POST'])
def MockController():
  form = MockCreate()
  code = form['code']
  api = form['api']
  return render_template("testf.html",api=api,data=code)

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