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/**
* This Google Sheets script keeps data in the specified column sorted any time
* the data changes.
*
* After much research, there wasn't an easy way to automatically keep a column
* sorted in Google Sheets, and creating a second sheet to act as a "view" to
* my primary one in order to achieve that was not an option. Instead, I
* created a script that watches for when a cell is edited and triggers
* an auto sort.
*
* To Install:
* 1. Open your Google Sheet.
* 2. Navigate to Tools > Script editor…
* 3. Copy and paste this script in the editor.
* 4. Change the three constants at the start of the code below to reflect
* your preferences.
* - Note: My goal is to move these settings to a GUI and have this script
* be installable as an add-on.
* 5. Give the script a name (e.g. "Keep Data Sorted") and hit save.
*
* To Use:
* Simply edit your Google Sheet like normal. Any time you edit data in your
* sort column (specified in `SORT_COLUMN_INDEX`), the script will re-sort
* your rows.
*
* If you are having trouble getting it to work, try the following in order:
* 1. Reload your spreadsheet.
* 2. Open the script editor (Tools > Script editor…), click the "Select
* function" dropdown, choose `onInstall`, and hit Debug (the bug icon
* that precedes the dropdown).
* 3. If that doesn't work, reach out via GitHub (link below) and ask for
* help. You may also find that others have run into the same issue
* and have already posted a solution.
*
* @author Mike Branski (@mikebranski)
* @link https://gist.github.com/mikebranski/285b60aa5ec3da8638e5
*
* @OnlyCurrentDoc Limits the script to only accessing the current spreadsheet.
*/
// The numeric index of the column you wish to keep auto-sorted. A = 1, B = 2,
// and so on.
var SORT_COLUMN_INDEX = 2;
// Whether to sort the data in ascending or descending order.
var ASCENDING = false;
// If you have header rows in your sheet, specify how many to exclude them from
// the sort.
var NUMBER_OF_HEADER_ROWS = 1;
// No need to edit anything below this line for general use.
// Make an improvement? Ping me on GitHub and let me know!
// Keep track of the active sheet.
var activeSheet;
/**
* Automatically sorts on the pre-defined column.
*
* @param {Sheet} sheet The sheet to sort.
*/
function autoSort(sheet) {
// Get the entire set of data for this sheet.
var range = sheet.getDataRange();
// Then, if there are any header rows, offset our range to remove them from
// it; otherwise, they will end up being sorted as well.
if (NUMBER_OF_HEADER_ROWS > 0) {
// Setting the second parameter of offset() to 0 to prevents it from
// shifting any columns. Note that row headers wouldn't make much
// sense here, but this is where you would modify it if you
// wanted support for those as well.
range = range.offset(NUMBER_OF_HEADER_ROWS, 0);
}
// Perform the actual sort.
range.sort( {
column: SORT_COLUMN_INDEX,
ascending: ASCENDING
} );
}
/**
* Triggers when a sheet is edited, and calls the auto sort function if the
* edited cell is in the column we're looking to sort.
*
* @param {Object} event The triggering event.
*/
function onEdit(event) {
var editedCell;
// Update the active sheet in case it changed.
activeSheet = SpreadsheetApp.getActiveSheet();
// Get the cell that was just modified.
editedCell = activeSheet.getActiveCell();
// Only trigger a re-sort if the user edited data in the column they're
// sorting by; otherwise, we perform unnecessary additional sorts if
// the targeted sort column's data didn't change.
if (editedCell.getColumn() == SORT_COLUMN_INDEX) {
autoSort(activeSheet);
}
}
/**
* Runs when the sheet is opened.
*
* @param {Object} event The triggering event.
*/
function onOpen(event) {
activeSheet = SpreadsheetApp.getActiveSheet();
autoSort(activeSheet);
}
/**
* Runs when the add-on is installed; calls onOpen() to ensure any initializion
* work is done immediately.
*
* @param {Object} event The triggering event.
*/
function onInstall(event) {
onOpen(event);
}
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