![]() You can provide a custom cell formatter by passing a function to the cell property and using the props. aggregatedCell: Used for formatting cells when aggregated.There are a couple of formatters available to you: This will depend on which adapter you are using. Each implementation is provided relevant information about the cell, header or footer and returns something your framework adapter can render eg. You can override this behavior by providing custom rendering implementations. Column Formatting & Renderingīy default, columns cells will display their data model value as a string. □ An easy way to remember: If you define a column with an accessor function, either provide a string header or provide a unique id property. If a primitive string header is supplied, that header string will be used to uniquely identify the column.The columns id property will be used to uniquely identify the column OR.If defining an accessor column with an accessor function.If defining an accessor column with an object key or array index, the same will be used to uniquely identify the column.If you return a non-primitive value like an object or array, you will need the appropriate filter/sort/grouping functions to manipulate them, or even supply your own! □ Unique Column IDsĬolumns are uniquely identified with 3 strategies: so you'll want to make sure your accessor function returns a primitive value that can be manipulated in a meaningful way. □ Remember, the accessed value is what is used to sort, filter, etc. Here's an example of creating and using a column helper: While column defs are just plain objects at the end of the day, a createColumnHelper function is exposed from the table core which, when called with a row type, returns a utility for creating different column definition types with the highest type-safety possible. It's common to define a header or footer for a column group. Group columns do not have a data model so they too cannot be sorted, filtered, etc, and are used to group other columns together.Integrated Charts See Integrated Charts for more information. Filtering See Filtering for more information. Events Export See Export for more information. Editing See Cell Editing for more information. Column Headers See Column Headers for more information. a row actions button, checkbox, expander, etc. Column Definitions See Updating Column Definitions for more information. Display columns do not have a data model which means they cannot be sorted, filtered, etc, but they can be used to display arbitrary content in the table, eg.Accessor columns have an underlying data model which means they can be sorted, filtered, grouped, etc.The following "types" of column defs aren't actually TypeScript types, but more so a way to talk about and describe overall categories of column defs: action buttons, checkboxes, expanders, sparklines, etc. ![]() Creating columns for display-only purposes, eg.Creating header groups, headers and footers.Formatting the data model into what will be displayed in the table.Building the underlying data model that will be used for everything including sorting, filtering, grouping, etc.Column defs are the single most important part of building a table.
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