Creating a JSON Response to a Slack Slash Request

slack_slash-hello_world_json.py

from flask import Flask, request, make_response
import json
import os

app = Flask(__name__)

@app.route("/hello", methods=['POST'])
def hello():
	
	# grab the post request
	data = request.form
	
	# this is what a user types after the slash command
	query_text = data['text']

	# craft JSON payload response
	# these variables are not declared, need to replace 
	# for more details: https://api.slack.com/slash-commands
	payload = {
	    "response_type":response_type,
	    "text":response_text
	    "attachments":[
	        {
	            "text":attachment_text,
	            "title":title,
	            "title_link":title_link,
	            "color":"#005DA2",
	            "fields":[
	                {
	                    'title':"Field 1",
	                    'value':value1,
	                    'short':True
	                },
	                {
	                    'title':"Field 2",
	                    'value':value2,
	                    'short':True
	                }
	            ]
	        }
	    ]
	}

	# dump that dictionary to json
	json_payload = json.dumps(payload)

	# JSON response must have json header for Slack
	# update this to use flask.jsonify()
	# http://stackoverflow.com/questions/7907596/json-dumps-vs-flask-jsonify
	response = make_response(json_payload)
	response.headers['content-type'] = 'application/json'

	return response

if __name__ == '__main__':
	port = int(os.environ.get('PORT', 5000))
	app.run(host='0.0.0.0', port=port, debug=True)