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- import os
- from flask import Flask, render_template, session, redirect, url_for, flash
- from flask_bootstrap import Bootstrap
- from flask_moment import Moment
- from flask_wtf import FlaskForm
- from wtforms import StringField, SubmitField
- from wtforms.validators import DataRequired
- from flask_sqlalchemy import SQLAlchemy
-
-
- basedir = os.path.abspath(os.path.dirname(__file__))
-
- app = Flask(__name__)
- app.config['SECRET_KEY'] = 'hard to guess string'
- app.config['SQLALCHEMY_DATABASE_URI'] = \
- 'sqlite:///' + os.path.join(basedir, 'data.sqlite')
- app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
-
- bootstrap = Bootstrap(app)
- moment = Moment(app)
- db = SQLAlchemy(app)
-
-
- class Role(db.Model):
- __tablename__ = 'roles'
- id = db.Column(db.Integer, primary_key=True)
- name = db.Column(db.String(64), unique=True)
- users = db.relationship('User', backref='role')
-
- def __repr__(self):
- return '<Role %r>' % self.name
-
-
- class User(db.Model):
- __tablename__ = 'users'
- id = db.Column(db.Integer, primary_key=True)
- username = db.Column(db.String(64), unique=True, index=True)
- role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))
-
- def __repr__(self):
- return '<User %r>' % self.username
-
-
- class NameForm(FlaskForm):
- name = StringField('What is your name?', validators=[DataRequired()])
- submit = SubmitField('Submit')
-
-
- @app.errorhandler(404)
- def page_not_found(e):
- return render_template('404.html'), 404
-
-
- @app.errorhandler(500)
- def internal_server_error(e):
- return render_template('500.html'), 500
-
-
- @app.route('/', methods=['GET', 'POST'])
- def index():
- form = NameForm()
- if form.validate_on_submit():
- old_name = session.get('name')
- if old_name is not None and old_name != form.name.data:
- flash('Loks like you have changed your name!')
- session['name'] = form.name.data
- return redirect(url_for('index'))
- return render_template('index.html', form=form, name=session.get('name'))
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