flask2/example4.py¶

from flask import (Flask, url_for, request, render_template)

app = Flask(__name__)

import country_db as db

@app.route('/')
def hello_world():
    # let's skip the first dictionary, which is just header info
    return render_template('hello.html', dict_list=db.country_dicts[1:])
    
@app.route('/country-by-id/<cid>')
def country_by_id(cid):
    print(f'looking up country with id {cid}')
    if not cid.isdigit():
        return 'cid must be a string of digits'
    cid = int(cid)
    if cid >= len(db.country_tuples):
        return f'cid {cid} was not a valid index'
    (id, cname, capital, continent) = db.country_tuples[cid]
    print(f'found {cname}')
    return render_template('country.html',
                           cid=id,
                           name=cname,
                           capital=capital,
                           continent=continent)

@app.route('/country-by-name-from-tuples/<cname>')
def country_by_name_from_tuples(cname):
    (id, cname, capital, continent) = db.country_lookup_by_name_tuple(cname)
    return render_template('country.html',
                           cid=id,
                           name=cname,
                           capital=capital,
                           continent=continent)
 
@app.route('/country-by-name-from-dicts/<cname>')
def country_by_name_from_dicts(cname):
    country_dict = db.country_lookup_by_name_dicts(cname)
    return render_template('country-dic.html', c=country_dict)

@app.route('/country-lookup-form/')
def country_lookup_form():
    return render_template('country-lookup-form.html')

@app.route('/country-lookup/')
def country_lookup():
    cname = request.args.get('cname')
    country_dict = db.country_lookup_by_name_dicts(cname)
    return render_template('country-dic.html', c=country_dict)

@app.route('/new-country-form/')
def new_country_form():
    return render_template('new-country-form.html')

@app.route('/insert-country/', methods=['POST'])
def insert_new_country():
    cname = request.form.get('new_cname')
    capital = request.form.get('new_capital')
    continent = request.form.get('continent')
    db.insert_country(cname, capital, continent)
    return render_template('new-country-form.html')

@app.route('/render_styled/')
def render_styled():
    # has a static CSS file
    return render_template('trio-styled.html',
                           a='Harry',b='Ron',c='Hermione')
                         

if __name__ == '__main__':
    import os
    uid = os.getuid()
    app.debug = True
    app.run('0.0.0.0',uid)