I'm new to Flask and wondering if it is possible to use the same URL to display a form in html and query to display something
Ideally, I want to have the following result to happen.
If I'm going to create a query inside 138.10.2.1/sample by doing this:
http://138.10.2.1:8000/sample?psi=1&lavr=1&dsc=1&ifsc=1&ics=1&eng=3&ol1=1&ol2=1&reso=1&educ=1&listen=1&time=1&probe=1&unders=1
It will display:
*something in json format*
in the webpage
Else, if I'll just go straight to this:
http://138.10.2.1:8000/sample
It will direct me to a .html page with a form to fill or allow a user to attach a file to use and upload to display a transformed file in json format also.
Here's my code
sample.py
from flask import Flask, flash, request, redirect, url_for, make_response, send_from_directory, render_template
import convert as ps
app = Flask(__name__)
@app.route("/sample", methods=["GET", "POST"])
def query_strings():
#This is not working: if request.method == "POST":
args1 = request.args["psi"]
args2 = request.args["lavr"]
args3 = request.args["dsc"]
args4 = request.args["ifsc"]
args5 = request.args["ics"]
args6 = request.args["eng"]
args7 = request.args["ol1"]
args8 = request.args["ol2"]
args9 = request.args["reso"]
args10 = request.args["educ"]
args11 = request.args["listen"]
args12 = request.args["time"]
args13 = request.args["probe"]
args14 = request.args["unders"]
args_list = [args1, args2, args3, args4, args5, args6, args7, args8,args9, args10, args11, args12, args13, args14]
result = ps.execute(args_list)
response = app.response_class(
response=result,
status=200,
mimetype='application/json'
)
return response
#This is my html form: return render_template("form.html")
if __name__ == '__main__':
app.run(debug = True)
Right now, what I can have is to run the query but I am getting prompted to enter the paramaters I declared if I just entered:
http://138.10.2.1:8000/sample
You can check the number of arguments and return the HTML form if the length is 0 like this:
# if there are no arguments provided, show HTML form
if len(request.args) == 0:
return render_template("form.html")
Also, there's no need to store each argument as a separate variable and then combine them into a list. request.args is already a dictionary so you can simply get a list of the argument names and values with:
list(request.args.keys()) # list of argument names eg. ['psi', 'lavr', 'dsc', 'ifsc'...]
list(request.args.values()) # list of argument values eg. [1, 1, 1, 1...]
You can check if the argument names match a desired set:
if set(argument_names) == {"psi","lavr","dsc","ifsc","ics","eng","ol1","ol2","reso","educ","listen","time","probe","unders"}:
# return JSON
Overall, your code could look something like this:
from flask import Flask, request, render_template
import json
app = Flask(__name__)
@app.route("/sample", methods=["GET", "POST"])
def query_strings():
# if there are no arguments provided, show HTML form
if len(request.args) == 0:
return render_template("form.html")
argument_names = list(request.args.keys())
# if the argument list is valid
if set(argument_names) == {"psi","lavr","dsc","ifsc","ics","eng","ol1","ol2","reso","educ","listen","time","probe","unders"}:
# return JSON
response = app.response_class(
response=json.dumps(request.args),
status=200,
mimetype='application/json'
)
return response
return "Invalid arguments"
if __name__ == '__main__':
app.run(debug = True)
This will:
form.html if you load /sample with no arguments/sample with valid arguments (eg. /sample?psi=1&lavr=1&dsc=1&ifsc=1&ics=1&eng=3&ol1=1&ol2=1&reso=1&educ=1&listen=1&time=1&probe=1&unders=1)