How to get python data out of a string

Question

I am setting up a lambda function to put data into a db. I am using API gateway to control the endpoint.

The request I am making sends the data as a string:

      fetch(
        url,
        {
          method: "POST",
          headers: {
            "Content-Type": "application/json",
          },
          body: JSON.stringify({ name: "hello", contact: "Tim", phone: "555" }),
        }
      );

My lambda function keeps erroring out because it doesn’t know how to handle the string.

My function is:

import re
import psycopg2
import os
import json

def lambda_handler(event, context):
    password = os.environ['DB_SECRET']
    host = os.environ['HOST']

    connection = psycopg2.connect(user="postgres", password=password,
                                  host=host, port="5432",
                                  database="postgres")
    cursor = connection.cursor()
    postgres_insert_query = "INSERT INTO clients (name, phone, contact) VALUES ('{0}','{1}','{2}')".format(event.get('name'), event.get('phone'), event.get('contact'))
    cursor.execute(postgres_insert_query)
    print(cursor.rowcount)
    print(event['body'])
    connection.commit()                          
    return {
        'statusCode': 200,
         'headers': {
            "Access-Control-Allow-Origin" : "*"
         },
    }

Now my print statement print(event['body']) returns '{"name":"hello","contact":"Tim","phone":"555"}' which is the exact data I need. However for the life of me I can’t figure out how to get the data out of the string.

Asked By: tdammon

||

Source

Answer 1

import json

data = json.loads(event['body'])

print(data['name'])

Answered By: Chris Curvey

How to get python data out of a string

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