Lua

Firebase DELETE - Removing Data

See more Firebase Examples

Uses the DELETE method to delete data. The data used in this example is at Chilkat Firebase Pigs Database, and is shown here:

Lua

local chilkat = require("chilkat")

-- Uses the DELETE method to delete a Firebase record.

-- This example requires the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

-- This example assumes a JWT authentication token, if required, has been previously obtained.
-- See Get Firebase Access Token from JSON Service Account Private Key for sample code.

-- Load the previously obtained Firebase access token into a string.
local fac = chilkat.FileAccess.new()
local accessToken = fac:read_entire_text_file("qa_data/tokens/firebaseToken.txt", "utf-8")
if not fac.last_method_success then
    print(fac.last_error_text)
    return
end

local rest = chilkat.Rest.new()

-- Make the initial connection (without sending a request yet).
-- Once connected, any number of requests may be sent.  It is not necessary to explicitly
-- call Connect before each request.
local success = rest:connect("chilkat.firebaseio.com", 443, true, true)
if not success then
    print(rest.last_error_text)
    return
end

local authGoogle = chilkat.AuthGoogle.new()
authGoogle.access_token = accessToken
rest:set_auth_google(authGoogle)

-- Chilkat's sample data (pig-rescue data) is publicly readable at: https://chilkat.firebaseio.com/.json
-- This data is publicly readable, but not writable.  You'll need to
-- run against your own database..

-- We're going to delete a pig we previously added.  The push ID of that pig was -KI3pT33wKauiMxY4QTB,
-- so the path will be "/pig-rescue/animal/-KI3pT33wKauiMxY4QTB.json"

local jsonResponse = rest:full_request_no_body("DELETE", "/pig-rescue/animal/-KI3pT33wKauiMxY4QTB.json")
if not rest.last_method_success then
    -- Something happened in the communications (either no request was sent, or no response was received.
    -- (The Chilkat REST API also has lower-level methods where an app can send the request in one call,
    -- and then receive the response in another call.)
    print(rest.last_error_text)
    return
end

-- Check the response status code.   A 200 response status indicates success.
if rest.response_status_code ~= 200 then
    print(rest.response_status_text)
    print(jsonResponse)
    print("Failed.")
    return
end

print("Success.")