【发布时间】：2016-06-08 04:49:12
【问题描述】：
我正在尝试验证表单中的电子邮件和电话号码。已完成，但发生此验证错误时，文件字段无法保存上传的文件。我的表格如下。
forms.py
from wtforms import Form ,SelectField,StringField, validators , IntegerField , DateField , SelectMultipleField , FileField ,widgets
from wtforms.validators import StopValidation, ValidationError
def customvalidatorForAdImage(form, field):
allowed_file = ['jpg','jpeg','png','gif']
if form.image.data:
if form.image.data.split('.',1)[1] not in allowed_file:
raise ValidationError("Please enter a valid image file")
class CreateAdForm(Form):
ad_name = StringField("Ad Name", [validators.DataRequired("Ad name is required")])
advertiser_name =SelectField("Advertiser Name" , coerce=int)
ad_type = SelectField("Ad Type" , choices =zip( ad_type_categories , ad_type_cat_lebels))
image = FileField("Image" , [customvalidatorForAdImage, validators.DataRequired("Image is required")])
url = StringField("URL" , [validators.DataRequired("URL is required")])
contact_name = StringField("Contact Name" , [validators.DataRequired("Contact Name is required")])
contact_email = StringField("Contact Email" , [validators.DataRequired("Contact Email is required"), validators.Email("Please enter a valid email")])
contact_phone = StringField("Contact Phone" , [validators.DataRequired("Contact Phone is required"), validators.Regexp("^(\+\d{1,3}[- ]?)?\d{10}$", message="Please enter a valid phone number")])
status = SelectField("Status" , choices = zip(status_categories , status_cat_lebles))
我的 ad.html 文件如下所示：
ad.html
{% extends "base.html" %}
{% set title = "Admin Manage Advertisers" %}
{% block head_css %}
{% endblock %}
{% block main_body %}
<div class="container">
<div class="row">
<div class="col-sm-8 col-sm-offset-2">
{% if err_msg %}
<div class="alert alert-danger alert-msg-with-icon" role="alert">
<i class="icon-exclamation-sign" style="font-size:60px;color:#B94A48;"></i>
<p>{{err_msg}}<br> If you believe this message is in error, please reach out to <a href='mailto:webmaster@tunneltalk.com' class="alert-link">webmaster@tunneltalk.com</a></p>
</div>
{% endif %}
<h1 class="text-center"><strong>Create a New Ad</strong></h1>
<form action="/create-ad" enctype="multipart/form-data" method="POST">
<div class="form-group">
{{ ad_form.ad_name.label }}
{{ ad_form.ad_name(class_="form-control", **{"data-parsley-required":"true",
"data-parsley-required-message":"Ad name is required"}) }}
<span class="help-block"></span>
</div>
<div class="row">
<div class="col-md-5">
<div class="form-group" >
{{ ad_form.advertiser_name.label }}
{{ ad_form.advertiser_name(class_="form-control" , **{"data-parsley-required":"true",
"data-parsley-required-message":"Advertiser name is required"}) }}
<span class="help-block"></span>
</div>
</div>
<div class="col-md-5 col-md-offset-2">
<div class="form-group" >
{{ ad_form.ad_type.label }}
{{ ad_form.ad_type(class_="form-control", **{"data-parsley-required":"true",
"data-parsley-required-message":"Ad type is required"
}) }}
<span class="help-block"></span>
</div>
</div>
</div>
<div class="row">
<div class="col-md-5">
<div class="form-group {{ 'has-error' if ad_form.image.errors}}">
{{ ad_form.image.label }}
{{ ad_form.image( **{"data-parsley-required":"true",
"data-parsley-required-message":"Image is required",
}) }}
<span class="help-block">{{ ad_form.image.errors[0] if ad_form.image.errors }}</span>
</div>
</div>
<div class="col-md-5 col-md-offset-2">
<div class="form-group" >
{{ ad_form.status.label }}
{{ ad_form.status(class_="form-control", **{"data-parsley-required":"true",
"data-parsley-required-message":"Status is required"
}) }}
<span class="help-block"></span>
</div>
</div>
</div>
<div class="form-group" >
{{ ad_form.url.label }}
{{ ad_form.url(class_="form-control", **{"data-parsley-required":"true",
"data-parsley-required-message":"URL is required"
}) }}
<span class="help-block"></span>
</div>
<div class="form-group">
{{ ad_form.contact_name.label }}
{{ ad_form.contact_name(class_="form-control", **{"data-parsley-required":"true",
"data-parsley-required-message":"Contact Name is required"
}) }}
<span class="help-block"></span>
</div>
<div class="form-group {{ 'has-error' if ad_form.contact_email.errors}}" >
{{ ad_form.contact_email.label }}
{{ ad_form.contact_email(class_="form-control", **{"data-parsley-required":"true",
"data-parsley-required-message":"Contact Email is required"
}) }}
<span class="help-block">{{ ad_form.contact_email.errors[0] if ad_form.contact_email.errors }}</span>
</div>
<div class="form-group {{ 'has-error' if ad_form.contact_phone.errors}}" >
{{ ad_form.contact_phone.label }}
{{ ad_form.contact_phone(class_="form-control", **{"data-parsley-required":"true",
"data-parsley-required-message":"Contact Phone is required"
}) }}
<span class="help-block">{{ ad_form.contact_phone.errors[0] if ad_form.contact_phone.errors }}</span>
</div>
<button type="submit" class="btn btn-primary btn-block">SUBMIT</button>
</form>
</div>
</div>
</div>
{% endblock %}
{% block contact_us_block %}
{% endblock %}
{% block js_block %}
{{super()}}
<script>
$(document).ready(function(){
$("div.container form").parsley({
successClass: "",
errorClass: "has-error",
classHandler: function(el) {
return el.$element.closest(".form-group");
},
errorsWrapper: "<span class='help-block'></span>",
errorTemplate: "<span></span>"
});
})
</script>
{% endblock %}
在表单提交之前查看屏幕截图。这里我选择了一个图像文件和无效的电子邮件。
但是当我单击提交按钮时，它会显示电子邮件验证错误，但无法保存所选的图像文件。我该如何解决？提交后查看屏幕截图。它在文件字段中显示“未选择文件”，但我已经选择了文件。谢谢
【问题讨论】：
标签： python jinja2 wtforms flask-wtforms