Flask Tutorial templates

flask.py

from flask import Flask, jsonify, request, url_for, redirect, render_template, session

app = Flask(__name__)
app.config['DEBUG'] = True
app.config['SECRET_KEY'] = '123bkh123h1v2hv31vhhy'

'''
------------------------------- ::  SECTION 1:FLASK BASICS  :: -------------------------------------
'''


# This is a route
@app.route('/')
def index():
    session.pop('name', None)
    return '<h1>Welcome to this course of flask</h1>'


@app.route('/home', methods=['POST', 'GET'], defaults={'name':'Sayantan Paul'})
@app.route('/home/<string:name>', methods=['POST', 'GET'])
def home(name):
    session['name'] = name
    return '<h1>This is a homepage. I am {}</h1>'.format(name)


@app.route('/json')
def json():
    if 'name' in session:
        name = session['name']
    else:
        name = None;
    return jsonify({'key1': 'value2', 'key2': 10, 'key3': [100, 12, 15], 'name': name})


@app.route('/query')
def query():
    name = request.args.get('name')
    age = request.args.get('age')
    location = request.args.get('location')    
    return """
            <h1>This is a Query page made in flask</h1>
            <h2>I am {} from {}</h2>
            <h2>My age is {}</h2>
            """.format(name, location, age)


@app.route('/form')
def theform():
    return '''
            <h1> This is a Form made in Flask</h1>

            <form method="POST" action="/process">
                NAME:<input type="text" name="name"><br>
                AGE:<input type="text" name="age"><br>
                LOCATION:<input type="text" name="location"><br>
                <input type="Submit">
            </form>
            '''
    

@app.route('/process', methods=['POST'])
def process():
    name = request.form['name']
    age = request.form['age']
    location = request.form['location']
    return jsonify({
        'Name': name,
        'Age': age,
        'Location': location
    })


@app.route('/processjson', methods=['POST', 'GET'])
def processjson():
    data = request.get_json()
    name = data['Name']
    age = data['Age']
    likes = data['Likes']
    return '''
            <h1>Hi! I am {}</h1>
            <h2> My age is {}</h2>
            <h2> I like {}</h2>
            '''.format(name, age, ' '.join(map(str, likes)))


@app.route('/processform', methods=['GET', 'POST'])
def processform():
    if request.method == 'GET':
        return '''
            <h1> This is a Form made in Flask</h1>

            <form method="POST" action="/processform">
                NAME:<input type="text" name="name"><br>
                AGE:<input type="text" name="age"><br>
                LOCATION:<input type="text" name="location"><br>
                <input type="Submit" value="Submit">
            </form>
            '''
    else:
        name = request.form['name']
        age = request.form['age']
        location = request.form['location']
        return '''
            <h1>Hi! I am {}</h1>
            <h2> My age is {}</h2>
            <h2> I live in {}</h2>
            '''.format(name, age, location)


@app.route('/thanks/<string:n>', methods=['GET', 'POST'])
def thanks(n):
    return '''
    <h1>Thanks, {} for submitting the form.</h1>
            '''.format(n)


@app.route('/redirect', methods=['GET', 'POST'])
def redirecting():
    if request.method == 'GET':
        return '''
            <h1> This is a Form made in Flask</h1>

            <form method="POST" action="/redirect">
                NAME: <input type="text" name="name"><br>
                AGE: <input type="text" name="age"><br>
                LOCATION: <input type="text" name="location"><br>
                <input type="Submit" value="Submit">
            </form>
            '''
    else:
     name = request.form['name']
     return redirect(url_for('thanks', n=name))


'''
------------------------------- ::  SECTION 2:TEMPLATES  :: ---------------------------------------
'''

@app.route('/formpage')
def formpage():
    return render_template('form.html')


@app.route('/homepage/<string:auth>')
def homepage(auth):
    return render_template('home.html', name=auth)


@app.route('/condition')
def condition():
    return render_template('conditional.html', display=False)


@app.route('/forloop')
def forloop():
    name = 'Sayantan Paul'
    return render_template('forloop.html', name=name,
                            langlist=['Python', 'Java', 'Golang', 'C', 'C++'], 
                            mylang=[{'choice': 'Python'}, {'choice': 'Golang'}, {'choice': 'Java'}])


@app.route('/image')
def image():
    return render_template('image.html')

@app.route('/windows')
def windows():
    return render_template('windows.html')

if __name__ == '__main__':
    app.run(debug=True)