{"action":"closed","issue":{"url":"https://api.github.com/repos/reactjs/redux/issues/1635","repository_url":"https://api.github.com/repos/reactjs/redux","labels_url":"https://api.github.com/repos/reactjs/redux/issues/1635/labels{/name}","comments_url":"https://api.github.com/repos/reactjs/redux/issues/1635/comments","events_url":"https://api.github.com/repos/reactjs/redux/issues/1635/events","html_url":"https://github.com/reactjs/redux/issues/1635","id":149352568,"number":1635,"title":"add the 'key' to the reducer callback","user":{"login":"xiejunfeng","id":6460243,"avatar_url":"https://avatars.githubusercontent.com/u/6460243?v=3","gravatar_id":"","url":"https://api.github.com/users/xiejunfeng","html_url":"https://github.com/xiejunfeng","followers_url":"https://api.github.com/users/xiejunfeng/followers","following_url":"https://api.github.com/users/xiejunfeng/following{/other_user}","gists_url":"https://api.github.com/users/xiejunfeng/gists{/gist_id}","starred_url":"https://api.github.com/users/xiejunfeng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/xiejunfeng/subscriptions","organizations_url":"https://api.github.com/users/xiejunfeng/orgs","repos_url":"https://api.github.com/users/xiejunfeng/repos","events_url":"https://api.github.com/users/xiejunfeng/events{/privacy}","received_events_url":"https://api.github.com/users/xiejunfeng/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2016-04-19T05:35:06Z","updated_at":"2016-04-19T11:09:13Z","closed_at":"2016-04-19T11:09:13Z","body":"hi, when dynamically generating reducer, the attributor of key may be used. Would you add this attributor to your source? or another better solution for this case ?\r\n\r\nat line 129 in the combineReducers.js\r\n```JS\r\n//var nextStateForKey = reducer(previousStateForKey, action)\r\nvar nextStateForKey = reducer(previousStateForKey, action, key)\r\n```"}}