wtforms

问题 I've got a pretty basic Flask app: from flask import Flask, render_template from flask_wtf import FlaskForm from wtforms_sqlalchemy.fields import QuerySelectField from wtforms.validators import DataRequired from flask_sqlalchemy import SQLAlchemy from wtforms import StringField db = SQLAlchemy() app = Flask(__name__) app.config['SQLALCHEMY_URI'] = 'sqlite:///:memory:' app.config['SECRET_KEY'] = 'fnord' db.init_app(app) class Section(db.Model): id = db.Column(db.Integer, primary_key = True)

问题 I'm not quite sure how approach this matter. I hope i get there. For example I have a table full of addresses on a page. The count of these are dynamic (could be 5 or 10 or any other count). And I want the possibility to edit them on one page. My approach was to create a Form with wtforms to edit one address and to multiply it in a jinja2 for loop and append to the html propertys name and id the loop.index0 from the itereation, so i can extract each row of data manually and put it back in my

问题 I currently am creating a dynamic select field using WTFORMS, however it never submits and fails the validation with the following error. Not a valid choice My Field is created like this: area = SelectField() and in the view, i am grabbing the options from the db like so: form = MytestForm() form.area.choices = [(a.id, a.name) for a in Area.objects.all()] It works however if i create static options. 回答1: My guess is that Area.id is a int - when data comes back from the client it is treated as

问题 I have a page with multiple links to redirect the user to different pages. I thought using a form would be nicer, so I defined a WTForms Form with multiple SubmitFields . How do I determine which button was clicked and redirect based on that? class MainForm(Form): user_stats = SubmitField('User Stats') room_stats = SubmitField('Room Stats') @main.route('/') @login_required def index(): form = MainForm() return render_template('index.html', form=form) <form action="#" method="post"> {{ wtf

问题 When attempting to set the default value of a SelectField with WTForms, I pass in value to the 'default' parameter like so. class TestForm(Form): test_field = SelectField("Test: ", choices=[(1, "Abc"), (2, "Def")], default=2) I have also tried the following. class TestForm(Form): test_field = SelectField("Test: ", choices=[(1, "Abc"), (2, "Def")], default=(2, "Def")) Neither set the default selected field to "Def." This works for other kinds of Fields such as TextField. How do you set the

问题 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) 回答1: The

问题 I\'m using Flask-WTF: Here is my form: from flask.ext.wtf import Form, TextField class BookNewForm(Form): name = TextField(\'Name\') Here is the controller: @book.route(\'/book/new\', methods=[\'GET\', \'POST\']) def customers_new(): form = BookNewForm() if form.is_submitted(): print \"submitted\" if form.validate(): print \"valid\" if form.validate_on_submit(): flash(\"Successfully created a new book\") return redirect(url_for(\'.books_show\')) return render_template(\'views/books_new.html\'

问题 I\'m trying to display a page with a form, then add a Player to the database when the form is submitted. However, I can\'t view the form because the browser always shows a 400 Bad Request error. Other posts indicate that this could be because the name of the form input doesn\'t match the key I get from request.form , but all my keys match. Why do I get this error? <form method=\"post\"> {{ form.hidden_tag() }} <input name=\"name\"> <input name=\"available\"> <input type=\"submit\"> </form>