flask-wtforms | 易学教程

Filling WTForms FormField FieldList with data results in HTML in fields

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问题 I have a Flask app in which I can populate form data by uploading a CSV file which is then read. I want to populate a FieldList with the data read from the CSV. However, when I try to populate the data, it enters raw HTML into the TextFields instead of just the value that I want. What am I doing wrong? app.py from flask import Flask, render_template, request, url_for from flask.ext.wtf import Form from wtforms import StringField, FieldList, FormField, SelectField from wtforms.validators

flask-wtforms field required

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how i can add tag required on this flask code : {{ form.youtube_href(type='url', class='form-control') }} actual output is : <input class="form-control" id="youtube_href" name="youtube_href" value="" type="url"> need this output bat give error : <input class="form-control" id="youtube_href" name="youtube_href" value="" type="url" required> im tried this bat give error : {{ form.youtube_href(type='url', class='form-control', 'required') }} As of WTForms 2.2 (June 2nd, 2018), fields now render the required attribute if they have a validator that sets the required flag, such as DataRequired and

How to populate wtform select field using mongokit/pymongo?

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问题 I'm trying to create a SelectField using a mongodb query, but so far I haven't been successful: # forms.py in blueprint CATEGORIES = [] for item in db.Terms.find(): CATEGORIES.append((item['slug'], item['name'])) class TermForm(Form): category = SelectField( choices=CATEGORIES, validators=[Optional()]) But I get an exception: Traceback (most recent call last): File "/home/one/Projects/proj/manage.py", line 14, in <module> app = create_app(os.getenv('FLASK_CONFIG') or 'default') File "/home

How do I validate wtforms fields against one another?

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问题 I have three identical SelectField inputs in a form, each with the same set of options. I can't use one multiple select. I want to make sure that the user selects three different choices for these three fields. In custom validation, it appears that you can only reference one field at a time, not compare the value of this field to others. How can I do that? Thanks! 回答1: You can override validate in your Form ... class MyForm(Form): select1 = SelectField('Select 1', ...) select2 = SelectField(

WTForms: two forms on the same page?

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问题 I have a dynamic web-page that should process two forms: a login form and a register form . I am using WTForms to process the two forms but I am having some trouble making it work, since both forms are being rendered to the same page. The following is the code for the login form of my webpage: PYTHON: class Login(Form): login_user = TextField('Username', [validators.Required()]) login_pass = PasswordField('Password', [validators.Required()]) @application.route('/index', methods=('GET', 'POST'

Form is never valid with WTForms

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I have a Flask-WTF form for sign in. Apparently the form is never valid, no matter what I enter "success" is never printed. Why isn't my form validating? class loginForm(Form): email = EmailField('email', validators=[InputRequired("Please enter your email address."), Email("Please enter a valid email address.")]) password = PasswordField('password', validators=[InputRequired("Please enter your password.")]) @app.route('/sign-in', methods=['POST', 'GET']) def signIn(): form = loginForm(request.form) if form.validate_on_submit(): print 'success' return redirect('/') return render_template(

Clear valid form after it is submitted

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I want to reset the form after it validates. Currently the form will still show the previous data after it is submitted and valid. Basically, I want the form to go back to the original state with all fields clean. What is the correct to do this? @mod.route('/', methods=['GET', 'POST']) def home(): form = NewRegistration() if form.validate_on_submit(): #save in db flash(gettext(u'Thanks for the registration.')) return render_template("users/registration.html", form=form) The issue is that you're always rendering the form with whatever data was passed in, even if that data validated and was

Form validation fails due missing CSRF

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A few days ago I have reset my local flask environment without having captured the dependencies via a pip freeze before I deleted it. Hence I had to re-install the latest version of the entire stack. Now out of the blue I am no longer able to validate with forms. Flask claims CSRF would be missing. def register(): form = RegisterForm() if form.validate_on_submit(): ... return make_response("register.html", form=form, error=form.errors) The first time I send a Get I retrieve an empty form.errors as expected. Now I fill out the form and submit it and form.errors is showing: {'csrf_token': [u

wtforms, CSRF, flask, FieldList

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问题 I'm having trouble passing through validation when using a FieldList with WTForms. I keep getting this error. {'csrf_token': [u'CSRF token missing']} . The problem is if I do not have any data to validate in the FieldList field, the validation passes and there are no issues. But when I try to validate the form with any data I get that error. Here are my forms: class FilterForm(wtf.Form): filter_value = wtf.TextField('Value', validators=[validators.Required()]) filter_operator = wtf

populate WTForms select field using value selected from previous field

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问题 New to this, trying to build an app following a well known Flask tutorial, using Flask-bootstrap, Flask-wtforms, Jinja etc I have a form with 2 select fields and a button. class Form(FlaskForm): school_year = SelectField('School year', choices=some_tuples_list) category = SelectField('Category', choices=[]) submit = SubmitField('submit') I want only the first field to be pre-populated, and the other to get populated (on the client side?) based on the previous field's selected value. In the