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Chapter 3: Web Forms (v0.3)

This commit is contained in:
Miguel Grinberg 2017-09-05 00:04:56 -07:00
parent 5d4559227a
commit 3172e0955c
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6 changed files with 66 additions and 2 deletions
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2
app/__init__.py
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@ -1,5 +1,7 @@
from flask import Flask from flask import Flask
from config import Config
app = Flask(__name__) app = Flask(__name__)
app.config.from_object(Config)
from app import routes from app import routes

10
app/forms.py Normal file
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@ -0,0 +1,10 @@
from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField
from wtforms.validators import DataRequired
class LoginForm(FlaskForm):
username = StringField('Username', validators=[DataRequired()])
password = PasswordField('Password', validators=[DataRequired()])
remember_me = BooleanField('Remember Me')
submit = SubmitField('Sign In')

13
app/routes.py
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@ -1,5 +1,6 @@
from flask import render_template from flask import render_template, flash, redirect, url_for
from app import app from app import app
from app.forms import LoginForm
@app.route('/') @app.route('/')
@ -17,3 +18,13 @@ def index():
} }
] ]
return render_template('index.html', title='Home', user=user, posts=posts) return render_template('index.html', title='Home', user=user, posts=posts)
@app.route('/login', methods=['GET', 'POST'])
def login():
form = LoginForm()
if form.validate_on_submit():
flash('Login requested for user {}, remember_me={}'.format(
form.username.data, form.remember_me.data))
return redirect(url_for('index'))
return render_template('login.html', title='Sign In', form=form)

15
app/templates/base.html
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@ -8,8 +8,21 @@
{% endif %} {% endif %}
</head> </head>
<body> <body>
<div>Microblog: <a href="/index">Home</a></div> <div>
Microblog:
<a href="{{ url_for('index') }}">Home</a>
<a href="{{ url_for('login') }}">Login</a>
</div>
<hr> <hr>
{% with messages = get_flashed_messages() %}
{% if messages %}
<ul>
{% for message in messages %}
<li>{{ message }}</li>
{% endfor %}
</ul>
{% endif %}
{% endwith %}
{% block content %}{% endblock %} {% block content %}{% endblock %}
</body> </body>
</html> </html>

24
app/templates/login.html Normal file
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{% extends "base.html" %}
{% block content %}
<h1>Sign In</h1>
<form action="" method="post" novalidate>
{{ form.hidden_tag() }}
<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.password.label }}<br>
{{ form.password(size=32) }}<br>
{% for error in form.password.errors %}
<span style="color: red;">[{{ error }}]</span>
{% endfor %}
</p>
<p>{{ form.remember_me() }} {{ form.remember_me.label }}</p>
<p>{{ form.submit() }}</p>
</form>
{% endblock %}

4
config.py Normal file
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import os
class Config(object):
SECRET_KEY = os.environ.get('SECRET_KEY') or 'you-will-never-guess'