Flask and Mongo

application.py

import json
from bson import json_util, ObjectId
from flask import Flask
from flask import request
import flask
from pymongo import MongoClient

app = Flask(__name__)
app.debug = True

client = MongoClient()

json_mime_type = "application/json"


@app.route('/applications/', methods=['GET', 'POST', 'PUT'])
def applications_list():
    db = client.applications
    applications = db.applications

    if request.method == 'GET':
        result = applications_list_json(applications)
        return flask.Response(response=result, status=200, content_type=json_mime_type)
    elif request.method == 'POST' or request.method == "PUT":
        application = request.get_json()
        application_id = applications_put_json(applications, application)
        return flask.jsonify(id=application_id)


def applications_list_json(applications):
    result = list(applications.find())

    return flask.json.dumps(result, default=json_util.default)


def applications_put_json(applications, application):
    result = applications.insert_one(application)

    return result.inserted_id


@app.route("/applications/<application_id>")
def applications_get(application_id):
    db = client.applications
    applications = db.applications

    result = list(applications.find({"_id": ObjectId(application_id)}))

    if len(result) > 0:
        json_result = flask.json.dumps(result, default=json_util.default)
        return flask.Response(response=json_result, status=200, content_type=json_mime_type)
    else:
        return flask.abort(404)


@app.route("/applications/clear")
def applications_clear():
    db = client.applications
    applications = db.applications

    applications.remove()
    return flask.json.jsonify(success="OK")


if __name__ == '__main__':
    app.run()