标签: flask-wtforms

我正在使用Flask与Flask-WTForms,我正在编写一个管理页面,可以更新用户的值 - 包括密码.

我正在使用我用于注册的相同表单页面,但由于不必更新密码,我不想要它.使用Flask-WTForms进行此操作的正确方法是什么？

我已经进入UserForm了forms.py,我正在考虑制作一个自定义验证器,并且有一个文件级require_password选项可以覆盖默认检查.我是WTForms的新手,对Flask来说有点新鲜.

我想要使​​用Flask的"SubmitField"

<button type="submit" title="Save this form"><span>Save</span></button>

代替:

<input type="submit" title="Save this form" />

我在模板中打印出来:

{{ field(class=css_class, title=field.description, **kwargs) }}

我猜我必须以某种方式修改SubmitInput(SubmitField背后的小部件),但我不确定如何做到这一点,我是否必须修改__html __()？

编辑:

from flask.ext.wtf import Required, Length, EqualTo, Field, TextInput
from flask import Markup
class InlineButtonWidget(object):
    html = """
    <button type="submit" title="%s"><span>%s</span></button>
    """

    def __init__(self, input_type='submit'):
        self.input_type = input_type

    def __call__(self, field, **kwargs):
        kwargs.setdefault('id', field.id)
        kwargs.setdefault('type', self.input_type)
        if 'value' not in kwargs:
            kwargs['value'] = field._value()
        return HTMLString(self.html % (field.name, field.label ))


class InlineButton(Field):
  widget = InlineButtonWidget()
  def _value(self):
    if self.data: …

我用以下方式定义了一个表单:

class LoginForm(Form):
    login = EmailField(u'Email address', [required(), length(min=5, max=2048), validators.Email()])
    password = PasswordField(u'Password', [required(), length(min=6, max=50)])
    next = HiddenField()
    remember = BooleanField('Remember me')
    submit = SubmitField('Login')

然后我在Jinja2中编写一个通用宏来渲染表单字段,我想做的事情如下:

{% if field.is_required() %}
  {{ field.label(class_='required') }}
{% else %}
  {{ field.label() }}
{% endif %}

那么......有没有办法看看是否需要一个字段？

sqlalchemy.exc.InterfaceError: <unprintable InterfaceError object>我正在尝试 Flask，但在提交 wtforms 时遇到错误。模型类是：

 class Post(db.Model):
__tablename__ = 'blog_posts'
id = db.Column(db.Integer, unique=True, primary_key=True)
title = db.Column(db.String(50), unique=False)
content = db.Column(db.Text, unique=False)
user_id = db.Column(db.String, db.ForeignKey('users.username'))



@staticmethod
def post_new_entry(title, content, user_id):
    """ Post new entry to database """
    new_post = Post(title=title, content=content, user_id=user_id)
    db.session.add(new_post)
    db.session.commit()
    return new_post

def __repr__(self):
    return 'PostID {}: {} by {}'.format(self.id, self.title, self.user_id)

对于我的表格，我有以下内容：

class PostForm(Form):
title = StringField('Title', validators=[DataRequired(), Length(10, 65)])
post_content = TextAreaField('Content', validators=[DataRequired(), Length(50, 500)])
submit = SubmitField('Publish Post') …

我正在尝试使用 Flask-Bootstrap 渲染 WTF 表单quick_form。form但是，即使我将其传递给 ，我也会收到未定义的错误render_template。为什么这不起作用？

File "/home/eron/anaconda/lib/python2.7/site-packages/flask_bootstrap/templates/bootstrap/wtf.html", line 190, in template
    {{ form.hidden_tag() }}

File "/home/eron/anaconda/lib/python2.7/site-packages/jinja2/environment.py", line 397, in getattr
    return getattr(obj, attribute)
UndefinedError: 'form' is undefined

from flask.ext.wtf import Form

class NameForm(Form):
    name = StringField('Login', validators=[Required()])
    submit = SubmitField('Submit')

@app.route('/base', methods=['GET','POST'])
def index():
    name = None
    form = NameForm()

    if form.validate_on_submit():
        name = form.name.data
        session['name'] = form.name.data
        return redirect(url_for('base'))

    return render_template('base.html', form=form)

File "/home/eron/anaconda/lib/python2.7/site-packages/flask_bootstrap/templates/bootstrap/wtf.html", line 190, in template
    {{ form.hidden_tag() }}

File …

这是我的代码:

class ChangeOfficialForm(Form):
    is_official = SelectField(
        'Officially Approved',
        choices=[(True, 'Yes'), (False, 'No')],
        validators=[DataRequired()],
        coerce=bool
    )
    submit = SubmitField('Update status')

出于某种原因,is_official.data总是如此True.我怀疑我误解了胁迫是如何起作用的.

我正在尝试使用Bootstrap-CSS和水平显示单选按钮Flask-WTForms.据我所知,我需要使用Bootstrap类class_="radio-inline"来实现这一目标.我试过了,我得到的就是这个:

其中,单选按钮是垂直组织的,令人沮丧.

Flask WTForm代码:

from flask.ext.wtf import Form
import csv
import os
import buildHome as bh
from wtforms import TextField, RadioField, TextAreaField, SubmitField, validators, BooleanField

class ContactForm(Form):

    firstName = TextField("First name",  [validators.Required("Please enter your first name.")])
    lastName = TextField("Last name",  [validators.Required("Please enter your last name.")])
    #name = TextField("Name",  [validators.Required("Please enter your name.")])
    email = TextField("Email",  [validators.Required("Please enter your email address."), validators.Email("Please enter your email address.")])

    node_1 = BooleanField("Joan Johnson (Buckridge Inc)")
    direction_1 = RadioField('', …

我正在将 Django 应用程序移植到 Flask，但在最后一步中遇到了此错误：将其配置为在 nginx/gunicorn 后面运行。在 Django 中，这会引发类似的错误消息。要消除 Django 中的此错误，您只需添加ALLOWED_HOSTS到设置中，但我在 Flask_wtf.csrf 的源代码中找不到任何类似的内容

当我填写POST表格并提交时，它失败并显示Bad Request Referrer checking failed - origin does not match.。

flask_wtf.csrf.CsrfProtect 谷歌搜索该字符串，我找到了here的源代码。这是referrer针对进行检查host。自己手动执行该代码，我可以看到它将我的 nginx 的主机：端口与我的 Gunicorn 的主机：端口进行比较，并且它失败了，因为我的 Gunicorn 端口与 nginx 位于不同的端口上。

这是该文件中的相关源代码，其中有我的注释作为注释

# Presumably, good_referrer is Gunicorn, request.referrer is Nginx
# In Django's csrf source code, there is a list of ALLOWED_HOSTS to check against, instead
def protect(self):
    #...
    # If I change WTF_CSRF_SSL_STRICT to false, it doesn't …

是否可以在离开字段后提交之前验证 WTForm 字段？例如，输入用户名后，会验证该字段以查看其是否可用并显示复选标记，然后用户单击“提交”。

WTForms已更新为2.3.0具有重大更改。我尝试过调整其他要求，例如werkzeug.1.0.0但还没有成功。有人找到解决办法了吗？

这是堆栈跟踪：

Traceback (most recent call last):
   File "/usr/local/bin/celery", line 8, in <module>
     sys.exit(main())
   File "/usr/local/lib/python3.8/site-packages/celery/__main__.py", line 16, in main
     _main()
   File "/usr/local/lib/python3.8/site-packages/celery/bin/celery.py", line 322, in main
     cmd.execute_from_commandline(argv)
   File "/usr/local/lib/python3.8/site-packages/celery/bin/celery.py", line 495, in execute_from_commandline
     super(CeleryCommand, self).execute_from_commandline(argv)))
   File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", line 289, in execute_from_commandline
     argv = self.setup_app_from_commandline(argv)
   File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", line 509, in setup_app_from_commandline
     self.app = self.find_app(app)
   File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", line 531, in find_app
     return find_app(app, symbol_by_name=self.symbol_by_name)
   File "/usr/local/lib/python3.8/site-packages/celery/app/utils.py", line 373, in find_app
     sym = symbol_by_name(app, imp=imp)
   File "/usr/local/lib/python3.8/site-packages/celery/bin/base.py", …