Get the date/time a badge was awarded?

问题

Using this, it is possible to take the badges from a specific user of Stack Overflow:

library(stackr) 
badges <- stack_users(9371451, "badges", num_pages=100000, pagesize=100)

How can I add a parameter to take also the timestamp that the badge was awarded to the user? And if possible, for which answer?

回答1:

It is possible-ish with the Stack Exchange API, but not with the stackr library you are using.

The /users/{ids}/badges route returns a list of badge objects, which only has these possible properties:

    award_count     integer
    badge_id        integer, refers to a badge
    badge_type      one of named, or tag_based
    description     string 
    link            string 
    name            string
    rank            one of gold, silver, or bronze
    user            shallow_user

So you can't get the timestamp or triggering post there.

However, you can get this information (mostly) from the /notifications route, which can return results like:

{ "items": [ {
      "site": {"site_url": "https://webmasters.stackexchange.com"},
      "is_unread": false,
      "creation_date": 1520234766,
      "notification_type": "badge_earned",
      "body":   `You've earned the \"Notable Question\" badge for 
                <a href=\"http://webmasters.stackexchange.com/questions/65822\">
                How to bulk delete email accounts from cPanel / my hosting account?</a>.`
                //  Manually wrapped for this post
    },
    etc.

But, important:

/notifications requires authentication and only works for a logged-in (via the API) user.
That stackr library does not support authentication. (See your previous question in a bit.)
/notifications returns all of a given user's Stack Exchange sites, so you will have to filter out the ones you are not interested in.
/notifications returns several kinds of notices, so you will have to filter out the ones that are not badge related.
/notifications does not return badge details like rank, so you will still need to call /users/{ids}/badges and marry the results.
For higher rep users, it is possible that you would exhaust your API quota before being able to fetch all of that user's notifications.

回答2:

you can use users/{ids}/timeline. See description page:

Returns a subset of the actions the users in {ids} have taken on the site.

This method returns users' posts, edits, and earned badges in the order they were accomplished.

library(stackr)
df_timeline <- stackr:::stack_GET("users/9371451/timeline", num_pages = 10000)

The ::: is necessary because the function stack_GET is an internal command

来源：https://stackoverflow.com/questions/49116244/get-the-date-time-a-badge-was-awarded

标签

stackexchange-api