我有一个页面，允许用户编辑其个人资料。但是我遇到一个问题，其中validate_on_submit返回false（我认为）。唯一有效的时间是上载新的用户个人资料图片。但是，如果我尝试编辑其他字段，请单击“提交”。如果我删除了图片上传部分，则“提交”按钮将开始正常工作。
这是我的代码。对不起，金额代码，但我想提供尽可能清晰的图片。如果需要更多信息，请询问。
更新：我将图片上传代码移到了自己的表单中。这使validate_on_submit可以用于我的提交按钮。
更新2：我发现最终的问题是request.files在用户未编辑个人资料图片时未返回任何内容。我只需要做一个简单的检查，看看request.files是否返回了任何内容。
userImage = request.files['fileUpload']
if userImage.filename:
# Do stuff
型号：
class EditProfileForm(FlaskForm):
outX1 = HiddenField()
outY1 = HiddenField()
outX2 = HiddenField()
outY2 = HiddenField()
outW = HiddenField()
outH = HiddenField()
first_name = StringField('First Name', validators=[DataRequired()])
last_name = StringField('Last Name', validators=[DataRequired()])
email = EmailField(('Email'), validators=[DataRequired(), Email()])
job_title = StringField('Job Title', validators=[DataRequired()])
department = StringField('Department', validators=[DataRequired()])
start_date = DateField("Start Date", format="%Y-%m-%d",
default=datetime.today,
validators=[DataRequired()])
current_employee = BooleanField("Current Employee")
fileUpload = FileField('Employee Image',
validators=[FileRequired(), FileAllowed(images, 'Images only!')])
submit = SubmitField('Update Profile')
def __init__(self, original_email, *args, **kwargs):
kwargs['csrf_enabled'] = False
super(EditProfileForm, self).__init__(*args, **kwargs)
self.original_email = original_email
def validate_email(self, email):
if email.data != self.original_email:
employee = Employee.query.filter_by(email=self.email.data).first()
if employee is not None:
raise ValidationError('Please use a different email address.')
路线：
@bp.route('/edit_profile', methods=['GET', 'POST'])
@login_required
def edit_profile():
form = EditProfileForm(current_user.email)
if form.validate_on_submit():
current_user.email = form.email.data
current_user.first_name = form.first_name.data
current_user.last_name = form.last_name.data
current_user.job_title = form.job_title.data
current_user.department = form.department.data
current_user.start_date = form.start_date.data
current_user.current_employee = form.current_employee.data
userImage = request.files['fileUpload']
x1 = request.form.get('outX1')
y1 = request.form.get('outY1')
x2 = request.form.get('outX2')
y2 = request.form.get('outY2')
width = request.form.get('outW')
height = request.form.get('outH')
image_name = imageManip.cropNsave(userImage, form.email.data, x1, y1, x2, y2)
current_user.image_name = image_name
db.session.commit()
flash('Your changes have been saved.')
return redirect(url_for('main.edit_profile'))
elif request.method == 'GET':
print ("LOADING PROFILE PAGE")
form.email.data = current_user.email
form.first_name.data = current_user.first_name
form.last_name.data = current_user.last_name
form.job_title.data = current_user.job_title
form.department.data = current_user.department
form.start_date.data = current_user.start_date
form.current_employee.data = current_user.current_employee
imageName = current_user.image_name
imagePath = Config.STATIC_IMG_PATH + current_user.image_name
return render_template('edit_profile.html', title='Edit Profile',
form=form,
imagePath=imagePath,
imageName=imageName)
HTML：
{% block app_content %}
<h1>Edit Profile</h1>
<form id="cropForm">
<div id="overlay-container" class="popup-overlay">
<div>
<input class="btn btn-primary" id="cropbtn" name="crop" type="submit" value="Click to Crop!">
</div>
<div id="image-holder">
<img id="output_image"/>
</div>
</div>
</form>
<div class="row">
<form action="" method="POST" enctype="multipart/form-data" class="form" role="form">
<div class="col-md-4">
{{ form.csrf_token }}
{{ form.hidden_tag() }}
<div class="form-group required"><label class="control-label" for="first_name">First Name</label>
{{form.first_name(class="form-control")}}
</div>
<div class="form-group required"><label class="control-label" for="last_name">Last Name</label>
{{form.last_name(class="form-control")}}
</div>
<div class="form-group required"><label class="control-label" for="email">Email</label>
{{form.email(class="form-control")}}
</div>
</br>
<div class="form-group required"><label class="control-label" for="job_title">Job Title</label>
{{form.job_title(class="form-control")}}
</div>
<div class="form-group required"><label class="control-label" for="department">Department</label>
{{form.department(class="form-control")}}
</div>
<div class="form-group required"><label class="control-label" for="start_date">Start Date</label>
{{form.start_date(class="form-control")}}
</div>
<div class="form-group"><label class="control-label" for="current_employee">Current Employee? </label>
{{ form.current_employee }}
</div>
{{form.submit(class="btn btn-default")}}
</div>
</form>
<form>
<div class="col-md-4">
<img id="imageSrc" hidden="true" src="{{ imagePath }}">
<label class="control-label" for="employee_image">Employee Photo</label>
<br>
<div class="input-group mb-3">
<div class="input-group">
<label id="browsebutton" class="btn btn-default input-group-addon" for="fileUpload">
{{ form.fileUpload(id="fileUpload", type="file", value="") }}
Browse...
</label>
<input class="form-control" id="image_name" name="image_name" readonly="readonly" type="text" value=" {{imageName}}" >
</div>
</div>
<div>
<div>
<canvas id="myCanvas" width="360" height="450"></canvas>
</div>
<div class="cropped-image-content">
<img id="cropped_image"</img>
</div>
</div>
</div>
</form>
</div>
{% endblock %}
答案 0 :(得分：0)
查看您的代码，我看不到图像周围的任何错误处理。例如，如果request.files为空会怎样？我认为，如果您使此代码更健壮，则问题将得到解决。