SW 2023-03-17

# how_many_days_service.py

from flask import Flask, request, render_template

app = Flask(__name__)

NAME_IN_HTML_ELEMENT_FOR_USER_DATE =\
    "name_for_user_date"

@app.route("/")
def respond_to_root():
    bFormFilled:bool =\
        NAME_IN_HTML_ELEMENT_FOR_USER_DATE \
        in \
        request.args

    if (bFormFilled):
        the_date =\
        request.args[NAME_IN_HTML_ELEMENT_FOR_USER_DATE]
        r: str = f"<mark>Go the date {the_date}</mark>"
        return r
    else:
        return render_template("date_input.html")
# def respond_to_root

@app.route("/<pDate>", methods=['GET'])
def respond_to_date(pDate:str):
    r:str=f"<mark>Go the date {pDate}</mark>"
    return r
# def respond_to_date

app.run(
    host="0.0.0.0",
    port=5556,
    debug=True
)


***************

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Date Input</title>
</head>
<body>
    <form
        action="http://localhost:5556/"
        method="get"
    >
    <label for="id_the_user_date">Your date:</label>
    <input
        id="id_the_user_date"
        name="name_for_the_user_date"
        type="date"
        pattern="\d{4}-\d{2}-\d{2}"
        value="1969-06-21"
    >
    <input
        type="submit"
        value="submit date"
    >
    </form>
</body>
</html>