{"action":"created","comment":{"url":"https://api.github.com/repos/dimagi/commcare-hq/pulls/comments/26659788","id":26659788,"diff_hunk":"@@ -970,6 +981,93 @@ def already_has_meta(self):\n \n         return meta_blocks\n \n+    def _add_usercase_bind(self, usercase_path):\n+        self.add_bind(\n+            nodeset=usercase_path + 'case/@case_id',\n+            calculate=SESSION_USERCASE_ID,\n+        )\n+\n+    def add_usercase(self, form):\n+        from corehq.apps.app_manager.util import split_path\n+\n+        usercase_path = 'usercase/'\n+        actions = form.active_actions()\n+        usercase_bound = False\n+\n+        if 'update_case' in actions and hasattr(actions['update_case'], 'update'):\n+            usercase_updates = get_usercase_keys(actions['update_case'].update.items())\n+            if usercase_updates:\n+                if not usercase_bound:\n+                    self._add_usercase_bind(usercase_path)\n+                    usercase_bound = True\n+                usercase_block = _make_elem('{x}usercase')\n+                case_block = CaseBlock(self, usercase_path)\n+                case_block.add_update_block(usercase_updates)\n+                usercase_block.append(case_block.elem)\n+                self.data_node.append(usercase_block)\n+\n+        if 'case_preload' in actions:\n+            self.add_casedb()\n+            usercase_preloads = get_usercase_values(actions['case_preload'].preload.items())\n+            if usercase_preloads and not usercase_bound:\n+                self._add_usercase_bind(usercase_path)\n+                usercase_bound = True\n+            for nodeset, property_ in usercase_preloads.items():\n+                parent_path, property_ = split_path(property_)","path":"corehq/apps/app_manager/xform.py","position":89,"original_position":89,"commit_id":"e174aaecab74fd5879d894638bef53ff42fdf6c9","original_commit_id":"e174aaecab74fd5879d894638bef53ff42fdf6c9","user":{"login":"snopoke","id":249606,"avatar_url":"https://avatars.githubusercontent.com/u/249606?v=3","gravatar_id":"","url":"https://api.github.com/users/snopoke","html_url":"https://github.com/snopoke","followers_url":"https://api.github.com/users/snopoke/followers","following_url":"https://api.github.com/users/snopoke/following{/other_user}","gists_url":"https://api.github.com/users/snopoke/gists{/gist_id}","starred_url":"https://api.github.com/users/snopoke/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/snopoke/subscriptions","organizations_url":"https://api.github.com/users/snopoke/orgs","repos_url":"https://api.github.com/users/snopoke/repos","events_url":"https://api.github.com/users/snopoke/events{/privacy}","received_events_url":"https://api.github.com/users/snopoke/received_events","type":"User","site_admin":false},"body":"I don't think this is necessary since the user case will never have a parent.","created_at":"2015-03-18T12:55:30Z","updated_at":"2015-03-18T12:55:30Z","html_url":"https://github.com/dimagi/commcare-hq/pull/5897#discussion_r26659788","pull_request_url":"https://api.github.com/repos/dimagi/commcare-hq/pulls/5897","_links":{"self":{"href":"https://api.github.com/repos/dimagi/commcare-hq/pulls/comments/26659788"},"html":{"href":"https://github.com/dimagi/commcare-hq/pull/5897#discussion_r26659788"},"pull_request":{"href":"https://api.github.com/repos/dimagi/commcare-hq/pulls/5897"}}},"pull_request":{"url":"https://api.github.com/repos/dimagi/commcare-hq/pulls/5897","id":31331190,"html_url":"https://github.com/dimagi/commcare-hq/pull/5897","diff_url":"https://github.com/dimagi/commcare-hq/pull/5897.diff","patch_url":"https://github.com/dimagi/commcare-hq/pull/5897.patch","issue_url":"https://api.github.com/repos/dimagi/commcare-hq/issues/5897","number":5897,"state":"open","locked":false,"title":"User-as-a-case","user":{"login":"kaapstorm","id":708421,"avatar_url":"https://avatars.githubusercontent.com/u/708421?v=3","gravatar_id":"","url":"https://api.github.com/users/kaapstorm","html_url":"https://github.com/kaapstorm","followers_url":"https://api.github.com/users/kaapstorm/followers","following_url":"https://api.github.com/users/kaapstorm/following{/other_user}","gists_url":"https://api.github.com/users/kaapstorm/gists{/gist_id}","starred_url":"https://api.github.com/users/kaapstorm/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kaapstorm/subscriptions","organizations_url":"https://api.github.com/users/kaapstorm/orgs","repos_url":"https://api.github.com/users/kaapstorm/repos","events_url":"https://api.github.com/users/kaapstorm/events{/privacy}","received_events_url":"https://api.github.com/users/kaapstorm/received_events","type":"User","site_admin":false},"body":"This feature allows user data and activity to be tracked in a case.\r\n\r\nCase properties are available using the prefix \"user:\", e.g. \"user:dob\" or \"user:last_activity\". The user case generally behaves like any other 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