I am trying to access a public FB community page and display the images on web page, example-http://www.codeofaninja.com/2011/06/display-facebook-photos-to-your-website.html
My site is being developed in java, so I am looking for a core java solution to do something like this.
My site does not prompt for the user to login via Facebook or authenticate. I am simply trying to display all the images from my own album on my website.
I have created an FB app, and then created a community page on which I have my pictures.
I am struggling to I authenticate from the backend code of my with my app or page. My app has user_photos permission and the App Type (Apps->Your APP->Advanced->App type) is Web.
Here are the things I tried using graph API:
1) Get access token
https://graph.facebook.com/oauth/access_token?client_id=ABC&client_secret=XYZ&grant_type=client_credentials
2) Then use access token to get access to the page and its albums, but the above gives me app access_token. As mentioned on Graph API documentation for Page it requires a page acess_token, but I am not understanding how do I get the page_access_token via an app access_token with a backend application.
After Page access token is retrieved I can use the following call to retrieve all photos.
https://graph.facebook.com/PAGE_ID/photos?access_token=<page_access_token>
You can make the following Graph API call To get the page access tokens for all the Pages a particular user admin.
https://graph.facebook.com/user_id/accounts?access_token=<user_acess_token>
the app access token that you're retrieving from
https://graph.facebook.com/oauth/access_token?client_id=ABC&client_secret=XYZ&grant_type=client_credentials
can be used to access the public data on a page - you don't need a specific 'page' access token.
this page https://developers.facebook.com/tools/explorer/ is handy for testing things out - plug in the app access token and the page url to try it out
but I am not understanding how do I get the page_access_token via an app access_token with a backend application.
Not at all …
To get a page access token, you have to have a user access token with manage_pages permission first.
(If you get a long-lived user access token, and use that to get the page access token, then the latter will not expire by default.)
Related
I am pulling my hair out trying to understand what Facebook wants me to do to post to a FaceBook Page as a System User that has Admin and Page Privileges to and Owned by our business (We have Facebook Business Manager).
In a nut shell all I want to do is make this call:
https://graph.facebook.com/v2.5/${MyPageID}/feed
What I don't get is the access_token part.
I can generate access tokes for Apps, for Pages but all result in 403 returned from FaceBook. I have gone as far and checking every box available on the generate access token popup on the graph api and still I get 403 "Forbidden" so I am detailing the little I understand of the insanity that is FaceBook Auth in the hope that someone can explain where I am going wrong.
1) To Post as a System User to a Page I have to Create a FB App (I Would prefer just to post direct to the pages and skip the App part, My System User has Admin Access on All pages)
2) To Access the App I need an App Token.
3) To Create an App token I need a User Token.
4) To Create a user token I need to log in to Facebook and have all sorts of permissions on the App. (I can't log in as the System User! FB asks me to login as myself. I am not sure if this breaks the Auth Token generated?)
5) Then there are all sorts of swapping tokens to get a Permanent App token, Another point of potential failure!
6) IF the stars and moon align and you stand on your head the permanent App key can be passed to the above call as the access_token
I don't understand how to link the Pages I want to post to with the App created. Do I have to have 1 App for Each Page?
I have got one page to work, We initially used that App to Auth against the Instant Article Graph API:
https://graph.facebook.com/v2.5/${MyPageID}/instant_articles
I could not use the above token for the /feed url, I had to generate a new token with extra publish permissions and the page published with no problems, however when I change the ${MyPageID} to another page using the same access_token I get the 403.
I tried Creating a new App, I have no clue how they link to a specific page So the App to me seems sort of redundant.
Any help with what I am doing wrong or how I can go about simply posting to various FB Pages with a System User using the /feed api ?
The calls are made form a Spring Boot Java APP using HTTP Posts.
How to get a System User Auth and Page Auth:
1) Generate a User Token for an App (Button above the System User):
https://business.facebook.com/settings/system-users/${System User ID}?business_id=${your_business_manager_id}
System user has Page Admin on each page you need to post to.
App is just an FB app, not sure what it does other that it is a grouping I generate a token against.
I chose: (manage_pages, publish_pages, publish_actions, pages_manage_instant_articles, pages_show_list)
2) Check your access token:
https://developers.facebook.com/tools/debug/accesstoken/?access_token=${The access token you got from the step above}&version=v2.12
This will provide you with the App ID the Token is for and how long it lasts (we need a Permanent token)
3) Using Graph API Explorer gets the Accounts this token has access to:
https://developers.facebook.com/tools/explorer/${Your FB APP ID}/?method=GET&path=me%2Faccounts&version=v2.12
4) Using the output above find Page Auth for each page you wan to publish to
5) Post to each page in turn:
https://graph.facebook.com/v2.5/${MyPageID}/feed
I created a facebook app to get all the images my page is tagged in. It includes the following steps.
1 Get user access token with manage_pages,... permissions
2 Get the page access token from me/accounts endpoint
3 Get the photos using me/photos/tagged endpoint using access token i got in step 2
Every thing is working fine when in choose application as "graph api explorer" in the graph api explorer.
But when I select my application. It does not show me the images by other people in which my page was tagged.
Is there Something I am missing? Please help
Thanks
Your app needs to authenticate the page access token with the "manage_pages" permission for this call to work. To obtain a page access token you need to start by obtaining a user access token from the admin user of the page and ask for the manage_pages permission from your app when the user authenticates (logs in with your app). This document goes into details on how you can implement the flow I described above : https://developers.facebook.com/docs/facebook-login/access-tokens#pagetokens
I have a Node.js server running a social network site and I also have a facebook page for that site. For certain actions performed by users on my site, I want to post details on the facebook page of my app.
I referred to Thuzi facebook node sdk here on how to post to facebook wall. However, it requires app id, app secret and a temporary access token. App id and app secret are constant so I can put them somewhere in my config file and use from there. But how do I get the access token without any interaction from front-end ? All posts will be published by our app only and that too on our own page. I just want this to be triggered by the end user's actions. Any help ?
I am using Sails.js framework btw.
You would need to use an Extended Page Token for that, you only need to create it once and it will stay valid forever. And you will post "as Page" with a Page Token. How to get an Extended Page Token:
Create an App
Use the Graph API Explorer to generate a User Access Token (by authorizing the App with the manage_pages and publish_actions permission)
Extend the User Access Token (valid for 60 days)
Request an Extended Page Token by calling /me/accounts
Store that Extended Page Token on your server and use it for posting on the Page wall.
Here are some additional resources, explaining everything in detail:
https://developers.facebook.com/docs/facebook-login/access-tokens/
https://developers.facebook.com/docs/graph-api/reference/v2.1/page/feed
http://www.devils-heaven.com/facebook-access-tokens/
http://www.devils-heaven.com/extended-page-access-tokens-curl/
I am also digging more in to this nowdays As I am working on a node module for this.
Till now I got to know that we can create a temporary access_token and we can than extend that token upto max 60 days.
For this after getting temporary token you need to make a call to this url to get a access token with 60 days validity.
https://graph.facebook.com/oauth/access_token?client_id=&client_secret=&grant_type=fb_exchange_token&fb_exchange_token=
I am looking for a solution to fetch the feeds of an alcohol-related/age-restricted Facebook Brand Page by a website or back-end service to show these infos in that website for any user.
i.e: https://graph.facebook.com/JimBeam
The standard call results with an error or false.
I know the reason is the age-restictrion because of the relation to alcohol.
If I am connected to Facebook and add an access_token (user-token or page-token) to the request, I get everything I need, but it doesn't work if I am not connected.
If I request the page-token with offline_access, it also does not work when I am not connected to Facebook.
I am a bit confused with all this token types, offline_access, permissions and so on.
Is possible to get the fb-graph-feed of an age-restricted page and load that into a website?
To get an age-restricted feed you need to have a user access token that meets the criteria for the page. So if a user is visiting your site, they will need to authenticate your app, and then you can use the resulting access token to pull information to your website from that restricted page.
You should not be using a user's access token to display content to another user who does not meet the restrictions on the Facebook page.
An added problem is that Facebook does not expose a page's restrictions via the API, so you can't tell if a user has permission to see the page until your API request returns no data.
I have a Facebook application that users can add to their Facebook business Page(s) as a Page Tab app. It doesn't require any extended permissions for the user. I'm wondering if it's possible to use my app access_token and make calls against the Facebook Graph API to retrieve information about age-restricted Pages?
No, if a page is restricted demographically (e.g. for alcohol) you MUST use a user access token from a user who meets those restrictions, or a Page access token for the page itself.
An app access token will not work for such an API call
If the owner of that access token can view the data on facebook you can get any data using that access token not mater if its block for the others .