User:Kim/Stations, Skills, Resources/Flask

Flask

User:Sevgi/Grad Notes/Flask

pad with collective notes: https://pad.xpub.nl/p/FLASK-OMG-itshappening

Examples

txt

objective: website with textarea saves input to txt file and publishes entries on the page

JSON

objective: submit multiple inputs, store and retrieve them from json

from flask import Flask, render_template, request
app = Flask(__name__)

# define route
# when the route is being accessed, run function main with get and post request
@app.route("/", methods=["GET", "POST"])
# function main gets form input and renders a template (render and request are methods imported from flask)
def main():
    # is request is post
    if request.method == "POST":
        # request the form (in the html template)
        observation = request.form["observation"]
        # append the form input to observations
        observations.append(observation)
        # append observation to txt file
        # make txt file
        with open("database.txt", "a") as database:
            # we are only wiriting on post requests
            database.write("\n"+ observation)
    # reading is for opening the app, when we dont write first (code is not entirely running linearly)
    database = open("database.txt", "r").readlines()
    # or output to database.txt:
    return render_template("observations.html", database=database)