Two ways (and one legacy way) to perform detailed customization of data being exported from DataTables to targets such as Excel, PDF, etc.
The first way gives you access to the contents of each DataTable cell being exported.
The second way gives you access to the relevant object for the export target.
(The third way is included for legacy information only.)
Format the Source Data Cells
This is useful for formatting the raw data of each cell in your datatable, or accessing additional HTML element and attribute data which may be in each cell’s node.
See the export data options. There are three sections which can be formatted - the data is:
Example: Write contents of
<input> fields in a DataTable to output Excel, to capture user-provided data:
Customize the Exported Data Object
This is useful for performing more advanced customizations of the output (e.g. the Excel file or PDF file), which can’t be performed any other way.
The object you get depends on the export target.
|CSV||The CSV data as a single string, including newlines, etc.|
|Excel||An object containing the XML files in the ZIP file structure used by Excel. You need to understand that zip structure to manipulate its data.|
|An object containing the PDFMake document structure.|
|copy||The data to be copied, as a string.|
|The window object for the new window. As such the document body can be accessed using |
See here for a full list of the different export targets.
Excel example to format the output with a thin black border on each cell:
PDF example to change the font (see full details here for how to build your own
Customize the Exported Data Arrays
Another export data option, similar to the above example, but this one provides the data after all of it has been gathered and pre-processed by all other formatting options:
This is described in a DataTables forum comment as follows:
The customizeData option is a bit of a legacy hack. It was put in place before the Excel export buttons had a customize callback and it was the only way to modify the output data.
Data is provided in arrays:
body (2-dimensional array)
No example given, as this is probably less useful compared to the other approaches shown above.