Pages.isAppAdded
From Facebook Developer Wiki
Contents |
Description
Checks whether the Facebook Page has added the application.
Parameters
| Required | Name | Type | Description | |
| required | api_key | string | The application key associated with the calling application. | |
|---|---|---|---|---|
| call_id | float | The request's sequence number. Each successive call for any session must use a sequence number greater than the last. We suggest using the current time in milliseconds, such as PHP's microtime(true) function. | ||
| sig | string | An MD5 hash of the current request and your secret key, as described in the How Facebook Authenticates Your Application. | ||
| v | string | This must be set to 1.0 to use this version of the API. | ||
| optional | format | string | The desired response format, which can be either XML or JSON. (Default value is XML.) | |
| callback | string | Wrap the response inside a function call. This is primarily to enable cross-domain javascript requests using the <script> tag, sometimes known as "JSONP". This works with both XML and JSON. | ||
| page_id | int | The ID of the Facebook Page. |
Response
Returns 1 or 0.
Example Return XML
<?xml version="1.0" encoding="UTF-8"?>
<pages_isAppAdded_response xmlns="http://api.facebook.com/1.0/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://api.facebook.com/1.0/
http://api.facebook.com/1.0/facebook.xsd">1</pages_isAppAdded_response>
FQL Equivalent
FQL queries take the form: SELECT <fields> FROM <table> WHERE <conditions>
This function is similar (but returning in a slightly different format) to doing the following FQL query, with the appropriate parameters filled in:
SELECT has_added_app FROM page WHERE page_id IN (SELECT page_id FROM page_admin WHERE uid = <uid>)
Error Codes
| Code | Description | |
| 1 | An unknown error occurred. Please resubmit the request. | |
|---|---|---|
| 2 | The service is not available at this time. | |
| 4 | The application has reached the maximum number of requests allowed. More requests are allowed once the time window has completed. | |
| 5 | The request came from a remote address not allowed by this application. | |
| 100 | One of the parameters specified was missing or invalid. | |
| 101 | The API key submitted is not associated with any known application. | |
| 102 | The session key was improperly submitted or has reached its timeout. Direct the user to log in again to obtain another key. | |
| 103 | The submitted call_id was not greater than the previous call_id for this session. | |
| 104 | Incorrect signature. |
Notes
- This method does not require a
session_key, unless it is being called by a desktop application.
