Python 为什么我的注册表在提交时没有更新

我正在使用Flask wtforms和sqlite作为数据库制作注册表单，但当我尝试提交时，它不会推送到数据库

我已经检查了我是否没有在我的注册表中添加“post”方法，以及在配置数据库时是否创建了数据库

这是我的表格 Register.html 没有错误消息我只知道它不会将新用户推送到数据库。

明白了

希望这有助于其他人…哈哈

添加到register.html

这样request.files就不会为空

from flask_wtf import FlaskForm
from flask_wtf.file import FileField, FileAllowed
from flask_login import current_user
from wtforms import StringField, PasswordField, SubmitField, BooleanField
from wtforms.validators import DataRequired, Length, Email, EqualTo, ValidationError
from app.models import User
from app import db


class RegistrationForm(FlaskForm):
    username = StringField('Username',
                           validators=[DataRequired(), Length(min=2, max=20)])
    email = StringField('Email',
                        validators=[DataRequired(), Email()])
    picture=FileField('Profile picture',validators=[DataRequired(),FileAllowed(['jpg', 'png'])])
    password = PasswordField('Password', validators=[DataRequired()])
    
    confirm_password = PasswordField('Confirm Password',
                                     validators=[DataRequired(), EqualTo('password')])
    submit = SubmitField('Sign Up')
    def validate_username(self, username):
        user = User.query.filter_by(username=username.data).first()
        if user:
            raise ValidationError('That username is taken. Please choose a different one.')

    def validate_email(self, email):
        user = User.query.filter_by(email=email.data).first()
        if user:
            raise ValidationError('That email is taken. Please choose a different one.')

<form action="" method="POST" class='register-form'>
                      {{ form.hidden_tag() }}
                      <div class=''>
                    {{form.picture.label}}
                    {{form.picture}}
                    {%if error in form.picture.errors%}
                    <span style="color: red;">[{{ error }}]</span>
                    {% endif %}
                  </div>
                      <p >
                          {{ form.username.label }}<br>
                          {{ form.username(size=32) }}<br>
                          {% for error in form.username.errors %}
                          <span style="color: red;">[{{ error }}]</span>
                          {% endfor %}
                      </p>
                      <p>
                          {{ form.email.label }}<br>
                          {{ form.email(size=32) }}<br>
                          {% for error in form.email.errors %}
                          <span style="color: red;">[{{ error }}]</span>
                          {% endfor %}
                      </p>
                      <p>
                          {{ form.password.label }}<br>
                          {{ form.password(size=32) }}<br>
                          {% for error in form.password.errors %}
                          <span style="color: red;">[{{ error }}]</span>
                          {% endfor %}
                      </p>
                      <p>
                          {{ form.confirm_password.label }}<br>
                          {{ form.confirm_password(size=32) }}<br>
                          {% for error in form.confirm_password.errors %}
                          <span style="color: red;">  [{{"Typo! Passwords didn't match"}}]</span>
                          {% endfor %}
                      </p>
                      <p>{{ form.submit(class="btn btn-primary")   }}</p>
                    
                  </form>

from flask import Flask
from flask_script import Manager
from flask_sqlalchemy import SQLAlchemy
from flask_bcrypt import Bcrypt
from flask_login import LoginManager

app = Flask(__name__)

app.config['SECRET_KEY'] = 'hidden secret key8e9808798709809'
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///users.db'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS']=False
db = SQLAlchemy(app)
manager = Manager(app)

<form method="POST" enctype="multipart/form-data">