Merge base templates. Add database support. Add blueprint for main.

app/auth/forms.py

@@ -0,0 +1,11 @@
+from flask_wtf import FlaskForm
+from wtforms import StringField, PasswordField, BooleanField, SubmitField
+from wtforms.validators import DataRequired, Length, Email
+
+
+class LoginForm(FlaskForm):
+    email = StringField('Email', validators=[DataRequired(), Length(1, 64),
+                                             Email()])
+    password = PasswordField('Password', validators=[DataRequired()])
+    remember_me = BooleanField('Keep me logged in')
+    submit = SubmitField('Log In')

app/auth/views.py

@@ -1,10 +1,31 @@
-from flask import render_template
+from flask import flash, redirect, render_template, request, url_for
+from flask_login import login_required, login_user, logout_user
 from . import auth
+from .forms import LoginForm
+from ..models import User
 
 
 @auth.route('/login', methods=['GET', 'POST'])
 def login():
-    return render_template('auth/login.html.j2', title='Log in')
+    form = LoginForm()
+    if form.validate_on_submit():
+        user = User.query.filter_by(email=form.email.data).first()
+        if user is not None and user.verify_password(form.password.data):
+            login_user(user, form.remember_me.data)
+            next = request.args.get('next')
+            if next is None or not next.startswith('/'):
+                next = url_for('main.index')
+            return redirect(next)
+        flash('Invalid username or password.')
+    return render_template('auth/login.html.j2', form=form, title='Log in')
+
+
+@auth.route('/logout')
+@login_required
+def logout():
+    logout_user()
+    flash('You have been logged out.')
+    return redirect(url_for('main.index'))
 
 
 @auth.route('/register', methods=['GET', 'POST'])