Xbase++

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:

Xbase++

LOCAL nSuccess
LOCAL oFac
LOCAL cAccessToken
LOCAL oRest
LOCAL oAuthGoogle
LOCAL cJsonResponse

nSuccess := 0

//  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.
oFac := CreateObject("Chilkat.FileAccess")
cAccessToken := oFac:ReadEntireTextFile("qa_data/tokens/firebaseToken.txt", "utf-8")
IF (oFac:LastMethodSuccess != 1)
    ? oFac:LastErrorText
    oFac:destroy()
    RETURN
ENDIF

oRest := CreateObject("Chilkat.Rest")

//  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.  
nSuccess := oRest:Connect("chilkat.firebaseio.com", 443, 1, 1)
IF (nSuccess != 1)
    ? oRest:LastErrorText
    oFac:destroy()
    oRest:destroy()
    RETURN
ENDIF

oAuthGoogle := CreateObject("Chilkat.AuthGoogle")
oAuthGoogle:AccessToken := cAccessToken
oRest:SetAuthGoogle(oAuthGoogle)

//  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"

cJsonResponse := oRest:FullRequestNoBody("DELETE", "/pig-rescue/animal/-KI3pT33wKauiMxY4QTB.json")
IF (oRest:LastMethodSuccess != 1)
    //  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.)
    ? oRest:LastErrorText
    oFac:destroy()
    oRest:destroy()
    oAuthGoogle:destroy()
    RETURN
ENDIF

//  Check the response status code.   A 200 response status indicates success.
IF (oRest:ResponseStatusCode != 200)
    ? oRest:ResponseStatusText
    ? cJsonResponse
    ? "Failed."
    oFac:destroy()
    oRest:destroy()
    oAuthGoogle:destroy()
    RETURN
ENDIF

? "Success."

oFac:destroy()
oRest:destroy()
oAuthGoogle:destroy()