{"action":"created","comment":{"url":"https://api.github.com/repos/CenterForOpenScience/osf.io/pulls/comments/35665628","id":35665628,"diff_hunk":"@@ -505,6 +507,32 @@ def send_claim_email(email, user, node, notify=True, throttle=24 * 3600):\n     return to_addr\n \n \n+@contributor_added.connect\n+def notify_contributor(node, contributor, throttle=24 * 3600):\n+    if contributor.is_registered:\n+        contributor_record = node.contributor_record.get(contributor._id, {})\n+        if contributor_record:\n+            timestamp = contributor_record.get('last_sent', None)\n+            if timestamp:\n+                if not throttle_period_expired(timestamp, throttle):\n+                    raise HTTPError(400, data=dict(\n+                        message_long='User can only be added to a project once every {} hours'.format(throttle / 3600)\n+                    ))\n+        else:\n+            node.contributor_record[contributor._id] = {}\n+\n+        mails.send_mail(\n+            contributor.username,\n+            mails.CONTRIBUTOR_ADDED,\n+            user=contributor,\n+            node=node,\n+            sharing_page=node.web_url_for('node_contributors', _absolute=True)","path":"website/project/views/contributor.py","position":54,"original_position":54,"commit_id":"f8d165ab890affcdc4fa631be45ef9ed63c4e818","original_commit_id":"f8d165ab890affcdc4fa631be45ef9ed63c4e818","user":{"login":"samanehsan","id":6414394,"avatar_url":"https://avatars.githubusercontent.com/u/6414394?v=3","gravatar_id":"","url":"https://api.github.com/users/samanehsan","html_url":"https://github.com/samanehsan","followers_url":"https://api.github.com/users/samanehsan/followers","following_url":"https://api.github.com/users/samanehsan/following{/other_user}","gists_url":"https://api.github.com/users/samanehsan/gists{/gist_id}","starred_url":"https://api.github.com/users/samanehsan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/samanehsan/subscriptions","organizations_url":"https://api.github.com/users/samanehsan/orgs","repos_url":"https://api.github.com/users/samanehsan/repos","events_url":"https://api.github.com/users/samanehsan/events{/privacy}","received_events_url":"https://api.github.com/users/samanehsan/received_events","type":"User","site_admin":false},"body":"I originally tried sending the signal for adding a contributor within `Node.add_contributor`, but I ran into other failed tests too -- I can take a look at it again and see if I can make it work if @sloria agrees.","created_at":"2015-07-28T16:04:23Z","updated_at":"2015-07-28T16:04:23Z","html_url":"https://github.com/CenterForOpenScience/osf.io/pull/3385#discussion_r35665628","pull_request_url":"https://api.github.com/repos/CenterForOpenScience/osf.io/pulls/3385","_links":{"self":{"href":"https://api.github.com/repos/CenterForOpenScience/osf.io/pulls/comments/35665628"},"html":{"href":"https://github.com/CenterForOpenScience/osf.io/pull/3385#discussion_r35665628"},"pull_request":{"href":"https://api.github.com/repos/CenterForOpenScience/osf.io/pulls/3385"}}},"pull_request":{"url":"https://api.github.com/repos/CenterForOpenScience/osf.io/pulls/3385","id":38816828,"html_url":"https://github.com/CenterForOpenScience/osf.io/pull/3385","diff_url":"https://github.com/CenterForOpenScience/osf.io/pull/3385.diff","patch_url":"https://github.com/CenterForOpenScience/osf.io/pull/3385.patch","issue_url":"https://api.github.com/repos/CenterForOpenScience/osf.io/issues/3385","number":3385,"state":"open","locked":false,"title":"[feature] Send email to contributors added to a project","user":{"login":"samanehsan","id":6414394,"avatar_url":"https://avatars.githubusercontent.com/u/6414394?v=3","gravatar_id":"","url":"https://api.github.com/users/samanehsan","html_url":"https://github.com/samanehsan","followers_url":"https://api.github.com/users/samanehsan/followers","following_url":"https://api.github.com/users/samanehsan/following{/other_user}","gists_url":"https://api.github.com/users/samanehsan/gists{/gist_id}","starred_url":"https://api.github.com/users/samanehsan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/samanehsan/subscriptions","organizations_url":"https://api.github.com/users/samanehsan/orgs","repos_url":"https://api.github.com/users/samanehsan/repos","events_url":"https://api.github.com/users/samanehsan/events{/privacy}","received_events_url":"https://api.github.com/users/samanehsan/received_events","type":"User","site_admin":false},"body":"Purpose\r\n-----------\r\nAddresses #3369 -- send users an email when they are added to an OSF project or component. \r\n\r\nChanges\r\n------------\r\n- When a contributor with an OSF account is added to a project or component, send an email notifying them that they have been added: \r\n - If the user is added to a project and several of it's components at once, the user will only receive one email. \r\n - If they get added to another component later, they will receive an email. \r\n- Add a `contributor_record` field to the `Node` model to keep track of the last time each contributor was sent an email for throttling. 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