{"action":"created","issue":{"url":"https://api.github.com/repos/DevExpress/devextreme-angular/issues/839","repository_url":"https://api.github.com/repos/DevExpress/devextreme-angular","labels_url":"https://api.github.com/repos/DevExpress/devextreme-angular/issues/839/labels{/name}","comments_url":"https://api.github.com/repos/DevExpress/devextreme-angular/issues/839/comments","events_url":"https://api.github.com/repos/DevExpress/devextreme-angular/issues/839/events","html_url":"https://github.com/DevExpress/devextreme-angular/issues/839","id":350701186,"node_id":"MDU6SXNzdWUzNTA3MDExODY=","number":839,"title":"Extremely high number of refreshes/recalc on dxDataGrid","user":{"login":"SanderElias","id":1249083,"node_id":"MDQ6VXNlcjEyNDkwODM=","avatar_url":"https://avatars0.githubusercontent.com/u/1249083?v=4","gravatar_id":"","url":"https://api.github.com/users/SanderElias","html_url":"https://github.com/SanderElias","followers_url":"https://api.github.com/users/SanderElias/followers","following_url":"https://api.github.com/users/SanderElias/following{/other_user}","gists_url":"https://api.github.com/users/SanderElias/gists{/gist_id}","starred_url":"https://api.github.com/users/SanderElias/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SanderElias/subscriptions","organizations_url":"https://api.github.com/users/SanderElias/orgs","repos_url":"https://api.github.com/users/SanderElias/repos","events_url":"https://api.github.com/users/SanderElias/events{/privacy}","received_events_url":"https://api.github.com/users/SanderElias/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2018-08-15T06:34:18Z","updated_at":"2018-08-21T11:50:36Z","closed_at":null,"author_association":"NONE","body":"**To help us process the issue more efficiently, please provide the following information:**\r\nAngular 6.1.2, devExtreme 18.1.5\r\n\r\nI build this  [stackblitz](https://stackblitz.com/edit/angular-fawfyc?file=src%2Fapp%2Fapp.component.html)  to illustrate issue #838. I'm reusing it here to show the large amounts of calls to helper functions and the number unneeded rewrites to the screen.\r\n\r\nWhen you take a look at the console.log, you will see that there are at least 10 calls to the `getDbName` function, for every event that fires. Just clicking outside the grid will even trigger this.\r\nThis is causing speed issues in real applications. Is there a way I can prevent this?\r\n\r\n- Specify the type of the issue (check one with \"x\"):\r\n[x ] bug Report <!-- If you consider the issue to be a bug, provide detailed steps to reproduce it. If possible, create a demo illustrating the problem using [plunker template](http://plnkr.co/edit/XuAPDd?p=preview) or a similar service. -->\r\n[ ] feature request <!-- If you wish to post a feature request, please describe the current behavior and specify expected results. -->\r\n[ ] support inquiry <!-- We don't process questions related to the DevExtreme UI widgets specifics in this repository. If you have any questions regarding your scenario or widget behavior, please submit a support request to our [support center](www.devexpress.com/ask). There, you will get your question answered in a short time frame. -->\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/DevExpress/devextreme-angular/issues/comments/414647245","html_url":"https://github.com/DevExpress/devextreme-angular/issues/839#issuecomment-414647245","issue_url":"https://api.github.com/repos/DevExpress/devextreme-angular/issues/839","id":414647245,"node_id":"MDEyOklzc3VlQ29tbWVudDQxNDY0NzI0NQ==","user":{"login":"hakimio","id":768105,"node_id":"MDQ6VXNlcjc2ODEwNQ==","avatar_url":"https://avatars1.githubusercontent.com/u/768105?v=4","gravatar_id":"","url":"https://api.github.com/users/hakimio","html_url":"https://github.com/hakimio","followers_url":"https://api.github.com/users/hakimio/followers","following_url":"https://api.github.com/users/hakimio/following{/other_user}","gists_url":"https://api.github.com/users/hakimio/gists{/gist_id}","starred_url":"https://api.github.com/users/hakimio/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hakimio/subscriptions","organizations_url":"https://api.github.com/users/hakimio/orgs","repos_url":"https://api.github.com/users/hakimio/repos","events_url":"https://api.github.com/users/hakimio/events{/privacy}","received_events_url":"https://api.github.com/users/hakimio/received_events","type":"User","site_admin":false},"created_at":"2018-08-21T11:50:36Z","updated_at":"2018-08-21T11:50:36Z","author_association":"NONE","body":"Ok, so \"calculateDisplayValue\" issue is  explained in \"devextreme-angular\" README ([Angular Change Detection](https://github.com/DevExpress/devextreme-angular#angular-change-detection) section).\r\n\r\nWhat's the issue with \"calculateCellValue\" I'm not sure. There were some [similar issue](https://github.com/DevExpress/devextreme-angular/issues/797) before but it was fixed in 18.1.5 and I personally don't experience any issues with it in a project were we use 18.1.5.\r\n\r\n"}}
{"actor":{"display_login":"hakimio"}}