create auth package and update template files

app/__init__.py

@@ -27,4 +27,6 @@ def create_app(config_name):
     from .main import main as main_blueprint
     app.register_blueprint(main_blueprint)
 
+    from .auth import auth as auth_blueprint
+    app.register_blueprint(auth_blueprint, url_prefix='/auth')
     return app

app/auth/__init__.py

@@ -0,0 +1,6 @@
+# encoding: utf-8
+# create authentication blueprint here
+
+from flask import Blueprint
+auth = Blueprint('auth', __name__)
+from . import views

app/auth/views.py

@@ -0,0 +1,22 @@
+# encoding: utf-8
+# define routes for authenticated url
+
+from flask import render_template, redirect, url_for, flash
+from app.forms import loginForm
+from ..models import User
+from flask_login import login_required, login_user, logout_user
+from ..auth import auth
+
+@auth.route('/login')
+def sign_in():
+    form = loginForm()
+    if form.validate_on_submit():
+        user = User.query.filter_by(email=form.email.data).first()
+        if user and user.verify_pass(form.password.data):
+            return redirect(url_for('auth.dashboard'))
+        else:
+            flash('Invalid credentials')
+            return render_template('auth/login.html', form=form)
+    return render_template('auth/login.html', form=form)
+
+

app/templates/auth/login.html

@@ -0,0 +1,9 @@
+{% extends 'base.html' %}
+{% import 'macro/wtf.html' as wtf %}
+{% block main %}
+    <div class="signup-form">
+        <div class="container">
+            {{ wtf.loginForm(form) }}
+        </div>
+    </div>
+{% endblock %}

app/templates/base.html

@@ -23,6 +23,9 @@
                     <li class="nav-item">
                         <a class="nav-link" href="{{ url_for('main.user_register') }}">REGISTER</a>
                     </li>
+                    <li class="nav-item">
+                        <a class="nav-link" href="{{ url_for('auth.sign_in') }}">LOGIN</a>
+                    </li>
                 </ul>
                 <form class="form-inline mt-2 mt-md-0">
                     <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">

app/templates/macro/wtf.html

@@ -8,11 +8,11 @@
     </form>
 {% endmacro %}
 
-{#{% macro loginForm(form) %}#}
-{#    <form action="{{ url_for('auth.login') }}", method='POST'>#}
-{#        {{ form.hidden_tag() }}#}
-{#        {{ form.email() }}#}
-{#        {{ form.password() }}#}
-{#        {{ form.submit() }}#}
-{#    </form>#}
-{#{% endmacro %}#}
+{% macro loginForm(form) %}
+    <form action="{{ url_for('auth.sign_in') }}", method='POST'>
+        {{ form.hidden_tag() }}
+        {{ form.email(class='form-control', placeholder='Your registered email') }}
+        {{ form.password(class='form-control', placeholder='Password') }}
+        {{ form.submit(class='btn btn-primary btn-block') }}
+    </form>
+{% endmacro %}