""headerCellTemplate":"ui-grid/uiGridHeaderCell","cellTemplate":"ui-grid/uiGridCell"" appear in columnDefs

Hello, I am using last to date ui-grid and I see the following phenomena:

"headerCellTemplate":"ui-grid/uiGridHeaderCell","cellTemplate":"ui-grid/uiGridCell" appear in columnDefs array of objects by themselves.

also as you know "field" is one of columnDef options, well, it disappears from object at some point.

I make dynamic updates, namely re-creating column array since I want columns appear and disappear dytamically. And I feel that its quite strange that INPUT object gets mutated for some reason.

[PaulL1]

Are you sure it's getting updated in the columnDef array itself, and not in the copy of the columnDef that we make and attach to the columns array?

PauIL1, how I can tell? I am updating columnDefs array of objects inside configuration object I pass to uigrid directive. Could you please be more specific on that "copy" — does it have a name inside the config array? Which name? How I can make sure that I am updateing right array and not that "copy"?

[PaulL1]

Is it possible to provide a plunker? Are you looking at the columnDefs array, or the grid.columns[0].columnDef? In the medium term I am keen to change things so we directly enrich the provided columnDefs array, rather than creating a copy, although I haven't had that discussion with the other guys yet.

Thank you for the quick answer! I am looking at\working with columnDefs array. I am not ready to make plunker yet, as it would take some time and just c&p from my project is impossible, I have my own directive and so on.

What I do is to make columnDefs=[] and re-insert columns, before your suggestion about callback that you just gave in my other thread I knew this as the only option to make columns appear/disappear.

[PaulL1]

Have you looked at tutorial 113, which covers dynamically adding and removing columns?

Yes, I did according to that one - it has to do with adding/removing columns from columnDefs.