Python 从API调用填充WTForm的推荐方法

我正在将flask与WTforms结合使用，以编辑来自基于python eve的API的数据 我从API中得到了这个对象，请注意“\u id”和“\u etag”：

{
    "_updated": "Sun, 06 Apr 2014 12:49:11 GMT",
    "name": "moody",
    "question": "how are you?",
    "_links": {
        "self": {
            "href": "127.0.0.1:5000/surveys/533e9f88936aa21dd410d4f1",
            "title": "Survey"
        },
        "parent": {
            "href": "127.0.0.1:5000",
            "title": "home"
        },
        "collection": {
            "href": "127.0.0.1:5000/surveys",
            "title": "surveys"
        }
    },
    "_created": "Fri, 04 Apr 2014 12:03:20 GMT",
    "_id": "533e9f88936aa21dd410d4f1",
    "_etag": "7d11e7f57ed306043d76c05257474670eccde91c"
}

我想在WTForm中编辑对象，因此我创建并定义表单：

class surveyForm(Form):
    _id = HiddenField("_id")
    _etag = HiddenField("_etag")
    name = TextField("Name")
    question = TextField("question")
    submit = SubmitField("Send")

obj = getSurvey(id) # here I get the object from the API            
form = surveyForm(**obj)
return render_template('surveyAdd.html', form=form)

<form class="form-horizontal" role="form" action="{{ url_for('surveyAddOrEdit') }}" method=post>

    {{ form.hidden_tag() }}

    {{ form._id }}
    {{ form._etag }}

    {{ form.name.label }}
    {{ form.name(class="form-control") }}

    {{ form.question.label }}
    {{ form.question(class="form-control") }}

    {{ form.submit(class="btn btn-default") }}
</form>

启动表格：

class surveyForm(Form):
    _id = HiddenField("_id")
    _etag = HiddenField("_etag")
    name = TextField("Name")
    question = TextField("question")
    submit = SubmitField("Send")

obj = getSurvey(id) # here I get the object from the API            
form = surveyForm(**obj)
return render_template('surveyAdd.html', form=form)

<form class="form-horizontal" role="form" action="{{ url_for('surveyAddOrEdit') }}" method=post>

    {{ form.hidden_tag() }}

    {{ form._id }}
    {{ form._etag }}

    {{ form.name.label }}
    {{ form.name(class="form-control") }}

    {{ form.question.label }}
    {{ form.question(class="form-control") }}

    {{ form.submit(class="btn btn-default") }}
</form>

并呈现以下表格：

class surveyForm(Form):
    _id = HiddenField("_id")
    _etag = HiddenField("_etag")
    name = TextField("Name")
    question = TextField("question")
    submit = SubmitField("Send")

obj = getSurvey(id) # here I get the object from the API            
form = surveyForm(**obj)
return render_template('surveyAdd.html', form=form)

<form class="form-horizontal" role="form" action="{{ url_for('surveyAddOrEdit') }}" method=post>

    {{ form.hidden_tag() }}

    {{ form._id }}
    {{ form._etag }}

    {{ form.name.label }}
    {{ form.name(class="form-control") }}

    {{ form.question.label }}
    {{ form.question(class="form-control") }}

    {{ form.submit(class="btn btn-default") }}
</form>

结果是：

<form class="form-horizontal" role="form" action="/survey/add" method="post">

<div style="display:none;"><input id="csrf_token" name="csrf_token" type="hidden" value="1396959127.36##dc263965e20ecc9956fc25d5b5c96f90f311cf47"></div>

&lt;UnboundField(HiddenField, ('_id',), {})&gt;
&lt;UnboundField(HiddenField, ('_etag',), {})&gt;
<label for="name">Name</label>
<input class="form-control" id="name" name="name" type="text" value="moody">
<label for="question">question</label>
<input class="form-control" id="question" name="question" type="text" value="how are you?">
<input class="btn btn-default" id="submit" name="submit" type="submit" value="Send">

糟糕…隐藏的“\u id”字段和“\u etag”字段无法渲染。我刚得到一个未绑定的字段 请注意，下划线是条带化的，这就是问题所在

我认为，如果我可以直接从API加载对象并将其加载到表单中，然后在编辑后将其直接反馈到API中，那将是最佳选择……但由于剥离的uderscore，我不能这样做。相反，我改变了对象-将'\u id'重命名为'id'，将'\u etag'重命名为etag'-这样就行了

所以我有两个问题：

有没有一种方法可以让物体直接进入形体而不改变它们 与API交互的推荐方式是什么。让客户端方法加载和清理对象是否更好 干杯