在使用带有WTForms的FieldList时，我无法通过验证。我一直收到这个错误。 {'csrf_token': [u'CSRF token missing']}。问题是如果我在FieldList字段中没有任何要验证的数据，验证通过并且没有问题。但是，当我尝试使用任何数据验证表单时，我得到了该错误。
这是我的表格：
class FilterForm(wtf.Form):
filter_value = wtf.TextField('Value', validators=[validators.Required()])
filter_operator = wtf.SelectField('Operator', validators=[validators.Required()])
filter_compare_value=wtf.TextField('Compare Value', validators=[validators.Required()])
class RedirectForm(wtf.Form):
redirect_id = wtf.HiddenField('id')
redirect_name = wtf.TextField('Name', validators=[validators.Required()])
redirect_url = wtf.TextField('URL', validators=[validators.Required()])
redirect_type = wtf.SelectField('Type', validators=[validators.Required()])
redirect_method = wtf.SelectField('Method', validators=[validators.Required()])
redirect_active = wtf.BooleanField('Is Active')
redirect_filters_any = wtf.FieldList(wtf.FormField(FilterForm))
redirect_filters_all = wtf.FieldList(wtf.FormField(FilterForm))
表单似乎正确显示并正常工作，直到我将数据添加到redirect_filters_any或redirect_filters_all
有没有办法禁用FieldList的csrf或将CSRF值传递给FieldList？我想保持启用CSRF保护，但似乎无法通过此验证问题。
这是Jinja2模板
{% extends "base.html" %}
{% set active_page = "endpoints" %}
{% block tail_script %}
<script src="/static/js/page/redirects.js"></script>
{% endblock %}
{% block content %}
<div class="row12">
<div class="span12">
<ul class="breadcrumb">
<li><a href="{{ url_for('list_endpoints') }}">Endpoints</a> <span class="divider">/</span></li>
<li><a href="{{ url_for('show_endpoint', id=endpoint_id) }}">{{endpoint_name}}</a> <span class="divider">/</span></li>
{% if redirect_id != 'new' %}
<li class="active">{{ form.redirect_name.data }}</li>
{% else %}
<li class="active">New</li>
{% endif %}
</ul>
<form action="{{ url_for('edit_redirect', endpoint_id=endpoint_id, redirect_id=redirect_id) }}" class="form-horizontal" method="post">
<legend>General</legend>
{{ form.hidden_tag() }}
<div class="control-group {% if form.redirect_name.errors %}error{% endif %}">
<div class="control-label">{{ form.redirect_name.label }}</div>
<div class="controls">
{{ form.redirect_name|safe }}
{% if form.redirect_name.errors %}
<span class="help-inline">
<ul class="errors">
{% for error in form.redirect_name.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
{% endif %}
</div>
</div>
<div class="control-group {% if form.redirect_type.errors %}error{% endif %}">
<div class="control-label">{{ form.redirect_type.label }}</div>
<div class="controls">
{{ form.redirect_type|safe }}
{% if form.redirect_type.errors %}
<span class="help-inline">
<ul class="errors">
{% for error in form.redirect_type.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
{% endif %}
</div>
</div>
<div class="control-group {% if form.redirect_active.errors %}error{% endif %}">
<div class="control-label">{{ form.redirect_active.label }}</div>
<div class="controls">
{{ form.redirect_active|safe }}
{% if form.redirect_active.errors %}
<span class="help-inline">
<ul class="errors">
{% for error in form.redirect_active.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
{% endif %}
</div>
</div>
<div class="control-group {% if form.redirect_method.errors %}error{% endif %}">
<div class="control-label">{{ form.redirect_method.label }}</div>
<div class="controls">
{{ form.redirect_method|safe }}
{% if form.redirect_method.errors %}
<span class="help-inline">
<ul class="errors">
{% for error in form.redirect_method.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
{% endif %}
</div>
</div>
<div class="control-group {% if form.redirect_url.errors %}error{% endif %}">
<div class="control-label">{{ form.redirect_url.label }}</div>
<div class="controls">
{{ form.redirect_url|safe }}
{% if form.redirect_url.errors %}
<span class="help-inline">
<ul class="errors">
{% for error in form.redirect_url.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
{% endif %}
</div>
</div>
<legend>Meet All Filters <a href="#" class="btn addAllFilter">Add</a></legend>
<table class="stable-striped" id="all_filter_table">
<tbody>
{% for f in form.redirect_filters_all %}
<tr style="vertical-align:top;">
<td>
{{ f.filter_value }}
{% if f.filter_value.errors %}
<br>
<div class="control-group error">
<span class="help-inline">
<ul class="errors">
{% for error in f.filter_value.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
</div>
{% endif %}
</td>
<td>
{{ f.filter_operator }}
{% if f.filter_operator.errors %}
<br>
<div class="control-group error">
<span class="help-inline">
<ul class="errors">
{% for error in f.filter_operator.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
</div>
{% endif %}
</td>
<td>
{{ f.filter_compare_value }}
{% if f.filter_compare_value.errors %}
<br>
<div class="control-group error">
<span class="help-inline">
<ul class="errors">
{% for error in f.filter_compare_value.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
</div>
{% endif %}
</td>
<td><a href="#" class="btn remove">Remove</a></td>
</tr>
{% endfor %}
</tbody>
</table>
<legend>Meet Any Filters <a href="#" class="btn addAnyFilter">Add</a></legend>
<table class="stable-striped" id="any_filter_table">
<tbody>
{% for f in form.redirect_filters_any %}
<tr style="vertical-align:top;">
<td>
{{ f.filter_value }}
{% if f.filter_value.errors %}
<br>
<div class="control-group error">
<span class="help-inline">
<ul class="errors">
{% for error in f.filter_value.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
</div>
{% endif %}
</td>
<td>
{{ f.filter_operator }}
{% if f.filter_operator.errors %}
<br>
<div class="control-group error">
<span class="help-inline">
<ul class="errors">
{% for error in f.filter_operator.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
</div>
{% endif %}
</td>
<td>
{{ f.filter_compare_value }}
{% if f.filter_compare_value.errors %}
<br>
<div class="control-group error">
<span class="help-inline">
<ul class="errors">
{% for error in f.filter_compare_value.errors %}
<li>{{ error }}</li>
{% endfor %}
</ul>
</span>
</div>
{% endif %}
</td>
<td><a href="#" class="btn remove">Remove</a></td>
</tr>
{% endfor %}
</tbody>
</table>
{% if g.user.user_type == 'admin' %}
<div class="control-group">
<div class="controls">
<input class="btn btn-primary" type="submit" value="Save"/>
<a href="{{url_for('show_endpoint', id=endpoint_id)}}" class="btn">Cancel</a>
</div>
</div>
{% endif %}
</form>
</div>
</div>
{% endblock %}
问题似乎是Flask-WTForms Form实际上是wtforms.ext.SecureForm的子类 - 并且在表单上禁用csrf保护的唯一方法是在构造表单时将关键字参数csrf_enabled=False传递给表单。由于FormField实际上处理实例化表单，您可以：
FormField的子类，它允许您传递表单关键字参数
要么wtforms.Form子类flask.ext.wtforms.Form而不是FilterForm（只要你自己不显示FilterForm，你就不必担心CSRF）。在遇到同样的问题后，我想为上面的解决方案提供第三个选项
您还可以覆盖表单类中的构造函数以替换csrf_enabled的默认值。这样做的好处是，您可以使用与fieldlist成员相同的表单定义，以及通过传递csrf_enabled = True启用CSRF的独立表单。
class FilterForm(wtf.Form):
field = wtf.Form ...
def __init__(self, csrf_enabled=False, *args, **kwargs):
super(FilterForm, self).__init__(csrf_enabled=csrf_enabled, *args, **kwargs)
似乎csrf_enabled已被弃用。这是一个与Flask-WTForms 0.14.2一起使用的解决方案，部分基于leebriggs的answer。我创建了一个xNoCsrf子类，而不是在创建表单时传递参数，因为我不希望有人在他们想要的时候不小心忘记包含CSRF令牌。这样，您必须键入NoCsrf才能获得非CSRF版本。
class FilterForm(FlaskForm):
<some stuff here>
class FilterFormNoCsrf(FilterForm):
def __init__(self, *args, **kwargs):
super(FilterFormNoCsrf, self).__init__(meta={'csrf':False}, *args, **kwargs)
Here是csrf类的meta字段的文档。
从版本1.0开始，实现此目的的新方法如下：这将禁用表单的所有实例的CSRF令牌，因此请务必仅将其用作子表单。
class MyForm(FlaskForm):
class Meta:
csrf = False
myfield = StringField("A Field")