如何获取Facebook公共主页活动？API v2.12访问权限问题求助

Hey there, let's break down why you're hitting that "Field is empty or access token does not allow access" error when trying to pull TechCrunch's public events with API v2.12. Since you confirmed the page has active events, permission issues are definitely the culprit here—here's how to fix it:

• First, make sure your access token has the right permissions
  The default user access token you get in Graph Explorer doesn't include the scopes needed to read page events, even if they're public. You'll need to generate a token with these two permissions:

  • pages_show_list: Lets your token access the list of pages you can interact with (including public ones like TechCrunch)
  • events_read: Grants access to read event data from pages
    To do this:
  1. In Graph API Explorer, click the "Get Token" dropdown in the top right corner
  2. Select "Get User Access Token"
  3. Scroll through the permissions list and check the boxes for pages_show_list and events_read
  4. Click "Get Access Token" and follow the prompts to authorize your app

• Verify your request endpoint is correct
  Don't just request the page's id or name and expect events to show up implicitly. You need to either:

  • Directly call the events endpoint: techcrunch/events (since techcrunch is the page's username, it works as a stand-in for the page ID)
  • Or use field expansion to include events when fetching the page: techcrunch?fields=id,name,events

• Double-check API v2.12's permission rules
  Even for public events, API v2.12 requires explicit permissions to access page event data. Earlier versions might have been more lenient, but v2.10 and above locked this down—so you can't skip those permission checks.

• Debug your token to confirm permissions
  If you're still unsure, you can verify your token's scopes with the debug endpoint:

  /debug_token?input_token=YOUR_ACCESS_TOKEN&access_token=YOUR_ACCESS_TOKEN
  

  Look for the scopes array in the response—make sure it includes both pages_show_list and events_read. If not, go back and re-generate your token with the correct permissions.

Once you've got the right token and are using the correct endpoint, you should be able to pull TechCrunch's public events without that error.

内容的提问来源于stack exchange，提问作者Sebastian