jQuery plugin: Tablesorter 2.0 - Grouping Rows Widget

# tablesorter

## Grouping Rows Widget

### Flexible client-side table sorting

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### Notes

- This widget will only work in tablesorter version 2.8+ and jQuery version 1.7+.
- Please do not use this widget in very large tables (it might be really slow) or when your table includes multiple tbodies.
- In v2.21.0
  - Added `group_checkbox` option to allow setting the parsed text from the "parser-input-select.js" checkbox parser.
  - Fixed an issue with the filter widget overriding the "group-hidden" class name.
- In v2.15.6, added `group_saveGroups` & `group_saveReset` options. More details are included in the "Options" section.
- In v2.14, added `group_dateString` option. More details are included in the "Options" section.
- In v2.13, added `group_separator` option & `group-separator-#` header class name. To see this in action, check out the file type parser demo.
- In v2.12, added `group_callback` & `group_complete` options. See options section below for details.
- In v2.11:
  - The grouping widget now works across multiple tbodies.
  - Added `group-false` header option which disables the grouping widget for a specific column.
  - Added the `group_collapsed` option - get more details in the options block below.
  - You can now toggle all group rows by holding down the `Shift` key while clicking on a group header.
  - This widget now works properly with the pager addon (pager addon updated).
- Clicking on any of the sortable header cells will cause the column below it to sort and add a group header.

### Options

#### Group widget default options (added inside of tablesorter `widgetOptions`)

TIP! Click on the link in the option column to reveal full details (or toggle|show|hide all) or double click to update the browser location.

Option | Default | Description
--- | --- | ---
group_collapsible | `true` | when `true`, the group headers become clickable and collapse the rows below it.
group_collapsed | `false` | when `true` and `group_collapsible` is also `true`, all groups will start collapsed (v2.11)
group_saveGroups | `true` | Remember collapsed groups (v2.15.6) This option saves the currently collapsed groups, using the group name. Collapsed groups are saved by column and group class name, so that the groups can be dynamically changed and still remember the correct collapsed groups. Try changing the group names (using the sliders) in the demo below & then collapsing some groups several times; go back to previous groups and it will remember which groups were collapsed. Because the group name is saved, groups with a number range (e.g. "group-number-10"; see the "Numeric" column below) will show a different range depending on sort direction; in this situation, each sort direction is saved independently. This option requires the `$.tablesorter.storage` utility contained within the `jquery.tablesorter.widgets.js` file.
group_saveReset | `null` | Element used to clear saved collapsed groups (v2.15.6) This option should contain a jQuery selector string or jQuery object pointing to an element to be used to reset (clear) the list of collapsed groups. You can also clear the saved collapsed groups by calling this function: `$.tablesorter.grouping.clearSavedGroups(table);` (table would be either the table DOM or table jQuery object). This option requires the `$.tablesorter.storage` utility contained within the `jquery.tablesorter.widgets.js` file.
group_count | `" ({num})"` | Allows you to add custom formatting, or remove, the group count within the group header. Set it to `false` or an empty string to remove the count.
group_separator | `"-"` | When the `group-separator` class name is added, it uses the setting from this option to split the table cell content for grouping v2.13. If your content has mixed separators (e.g. `images/cats/burger-time.jpg`), you can set this option to use a regular expression:
    // the above example becomes: ["images", "cats", "burger-time", "jpg"]
    group_separator : /[/.]/
group_formatter | `null` | Use this function to modify the group header text before it gets applied. It provides various parameters (`txt, col, table, c, wo`) to make it work for any of the table columns and data. See the comments in the example below for more details. `txt` - current text of the group header. `col` - current table column being grouped (zero-based index). `table` - current table (DOM). `c` - table configuration data from `table.config`. `wo` - table widget options from `table.config.widgetOptions`.
    group_formatter : function(txt, col, table, c, wo) {
      // If there are empty cells, name the group "Empty"
      return txt === "" ? "Empty" : txt;
    }
group_callback | `null` | Use this function to further modify the group header to include more information (i.e. group totals). Parameters include (`$cell, $rows, column, table`). See the example below for more details v2.12. `$cell` - current group header table cell (jQuery object). `$rows` - current group rows (jQuery object). `column` - current table column being grouped (zero-based index). `table` - current table (DOM).
    group_callback : function($cell, $rows, column, table){
      $cell.find('.group-name').append(' group'); // adds "group" to the end of the group name
    }
group_complete | `"groupingComplete"` | Event triggered on the table when the grouping widget has finished work v2.12.
    $('table').on('groupingComplete', function(){
      // always hide empty groups ("Empty" can be added by the group_formatter function)
      $(this).find('.group-header:contains("Empty")').trigger('toggleGroup');
    });
group_checkbox | see description) | Set checkbox parser text (v2.21.0) The checkbox parser in the "parser-input-select.js" file will use this option to set the group header text displayed for a checkbox state. Defaults are: `[ "checked", "unchecked" ]`
group_months group_week group_time | (see description) | Name arrays included so that the language of the date groups can be modified easily. Defaults (English): group_months: (`[ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]`) - Month names. group_week: (`[ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ]`) - Named days of the week. group_time: (`[ "AM", "PM" ]`) - Time of day.
group_dateString | (see description) | When the `"group-date"` class name is set on a column, this function is used to format the date string. This is the default function:
    // you can just return date, date.toLocaleString(), date.toLocaleDateString() or d.toLocaleTimeString()
    group_dateString : function(date) {
      return date.toLocaleString();
    }
Other functions that can be used are `date` (alone), `date.toLocaleString()`, `date.toLocaleDateString()` or `d.toLocaleTimeString()`. See this reference for more details.

### Header Class Names

#### Group header class names (when changing the grouping, notice that the sort doesn't change, just the position and names of the group headers):

Group type | Group class name | Description
--- | --- | ---
Disable | `"group-false"` | Disable grouping of rows for a column (v2.11).
Text | `"group-word"` | Group the rows using the first word it finds in the column's parsed data (same as `"group-word-1"`).
`"group-word-n"`* | Group the rows using the nth word in the column (`"n"` can be any number).
`"group-letter"` | Group the rows using the first letter it finds in the column's parsed data (same as `"group-letter-1"`).
`"group-letter-n"`* | Group the rows using letters 1 through n (if n = 2, then it's the first 2 letters) in the column's parsed data (`"n"` can be any number).
Number | `"group-number"` | Group the rows by the number it finds in the column (step of one; same as `"group-number-1"`).
`"group-number-n"`* | Group the rows into blocks of every n values. So, if n = 10, the groups will be 0-9, 10-19, 20-29, etc (`"n"` can be any number).
Separator | `"group-separator"` | Group the rows using the text between the start and first separator that it finds in the column's parsed data (same as `"group-separator-1"`) (v2.13).
`"group-separator-n"`* | Group the rows using the nth separated group in the column (`"n"` can be any number) (v2.13).
Date | `"group-date"` | Group the rows by full date (this shows the current UTC time corrected for your time zone).
`"group-date-year"`* | Group the rows by year.
`"group-date-month"`* | Group the rows by month.
`"group-date-monthyear"`* | Group the rows by month & year.
`"group-date-week"`* | Group the rows by day of the week.
`"group-date-day"`* | Group the rows by month/day.
`"group-date-time"`* | Group the rows by time.

* When sorting some columns, different group headers with the same group name may exist (try "group-date-week" and "group-date-time"). To make these columns sort specifically by the group you want, you'll need to modify the parser.

# Demo

Numeric column:
(includes subtotals)
Animals column:
Date column:

| Quality (number) | Numeric (every 10) | Priority (letter) | Animals (first letter) | Natural Sort (first word) | Inputs (second word) | Date (Full)
--- | --- | --- | --- | --- | --- | --- | ---
| Quality | Numeric | Priority | Animals | Natural Sort | Inputs | Date
| 1 | 10 |  | Koala | abc 123 |  | 1/13/2013 12:01 AM
| 3 | 29 |  | Kangaroo | abc 1 |  | 1/15/2013
| 2 | 10 |  | Ant | abc 9 |  | 1/13/2013
| 3 | 81 |  | Bee | zyx 24 |  | 1/11/2013
| 3 | 21 |  | Aardwolf | zyx 55 |  | 1/13/2013 03:30 AM
| 1 | 3 |  | Bear | abc 11 |  | 1/15/2013
| 4 | 12 |  | Armadillo | zyx 2 |  | 1/15/2013 12:30 PM
| 2 | 56 |  | Aardvark | abc 2 |  | 1/22/2013
| 1 | 55 |  | Lion | abc 9 |  | 2/15/2013
| 4 | 87 |  | Anteater | ABC 10 |  | 1/3/2013
| 2 | 98 |  | Lemur | zyx 1 |  | 1/11/2013
| 1 | 20 |  | Llama | zyx 12 |  | 12/13/2012

# Page Header

    <!-- Tablesorter: required -->
    <link href="../css/theme.blue.css" rel="stylesheet">
    <script src="../js/jquery.tablesorter.js"></script>
    <script src="../js/jquery.tablesorter.widgets.js"></script>

    <!-- Grouping widget -->
    <script src="../js/parsers/parser-input-select.js"></script>
    <script src="../js/widgets/widget-grouping.js"></script>

# Script

# CSS

# HTML