#Ag grid group custom column type how to#
#Ag grid group custom column type update#

Due to row and column virtualisation, renderers will only exist for cells that the user can actually see due to horizontal and vertical scrolling. Note that this method will only return instances of the cell renderer that exists. define cellRenderer to be reused Component ( Provide params to a cell renderer using the colDef option cellRendererParams. Provide what currency for your cell renderer to use. For example, you might have a Cell Renderer for formatting currency but you need to On top of the parameters provided by the grid, you can also provide your own parameters. Then the value is finally placed into the DOM, either directly, or by using the chosen colDef.cellRenderer. The value is also optionally passed through a colDef.valueFormatter if it exists. The value comes using either the colDef.field or the colDef.valueGetter.

#Ag grid group custom column type how to#

The diagram below (which is taken from the section Cell Content) summarises the steps the grid takes while working out what to render and how to render. refresh() is optionally called multiple times. Typically get rendered once unless the component is destroyed first. In other words, component instantiation, agInit and destruction are always called exactly once. it may never be called, or called multiple times).

The component's GUI will be inserted into the grid 0 or 1 times (the component could get destroyed first, i.e.

agInit() is called once (with the corresponding cell's parameters supplied).

The lifecycle of the cell renderer is as follows:

#Ag grid group custom column type update#

The example below demonstrates handling the refresh, where the Gold, Silver and Bronze column cell renderers refresh when the Update Data button is clicked.Īs mentioned in the section on Change Detection, the refresh of the Cell will not take place if the value getting rendered has not changed. This will indicate to the grid that you did not refresh and the grid will instead destroy the component and create another instance of your component from scratch instead. If you do not want to handle the refresh in the cell renderer, just return back false from an otherwise empty method. The refresh method returns back a boolean value.

Scrolling the grid vertically causes columns (and their containing cells) to be removed and inserted due to column virtualisation.Īll of the above will result in the component being destroyed and recreated.

When you set the data for the whole row, the whole row in the DOM is recreated again from scratch.

Calling tData(data) to set new data into a rowNode.

The following will not result in the cell renderer's refresh method being called:

If any of the above occur and the grid confirms the data has changed via Change Detection, then the refresh() method will be called.

Calling api.refreshCells() to inform grid data has changed (see Refresh).

When editing a cell and editing is stopped, so that cell displays new value after editing.This is the preferred API way to change one value from outside of the grid. Calling tDataValue(colKey, value) to set a value directly onto the rowNode.The following items are those that do cause refresh to be called: The grid can refresh the data in the browser, but not every refresh / redraw of the grid results in the refresh method Here we go through some of the finer details. Component RefreshĬomponent Refresh needs a bit more explanation. See the section registering custom components for details on registering and using custom Cell Renderers.