query_strings.py

# code for the lesson "understanding query strings"
# section 2: lecture 9

from flask import Flask, render_template, request

app = Flask(__name__)


@app.route('/index')
@app.route('/')
def hello_flask():
    return 'Hello Flask'


@app.route('/new/')
def query_string(greeting='hello'):
    query_val = request.args.get('greeting', greeting)
    return '<h1> the greeting is: {0} </h1>'.format(query_val)


@app.route('/user')
@app.route('/user/<name>')
def no_query_strings(name='mina'):
    return '<h1> hello there ! {} </h1>'.format(name)