=== Advanced Custom Fields: Table Field ===
Contributors: jonua
Tags: acf table
Requires at least: 5.2.0
Tested up to: 5.2.3
Stable tag: 1.3.8
Requires PHP: 5.6
License: GPLv2 or later

A Table Field Add-on for the Advanced Custom Fields Plugin.

== Description ==

The Table Field Plugin enhances the functionality of the ["Advanced Custom Fields" plugin](https://de.wordpress.org/plugins/advanced-custom-fields/) with easy-to-edit tables.

This plugin requires the ["Advanced Custom Fields" plugin](https://de.wordpress.org/plugins/advanced-custom-fields/) or the [Pro version](https://www.advancedcustomfields.com/pro/)!

The table field works also with the repeater and flexible field types and supports the [ACF Blocks for Gutenberg](https://www.advancedcustomfields.com/blog/acf-5-8-introducing-acf-blocks-for-gutenberg/)

= Features =
* Table Header (Option)
* Table Caption (Option)
* Support for ACF Gutenberg blocks
* Add and remove table columns and rows
* Change order of columns and rows by dragging
* To move to the next cells editor press key: tab
* To move to the previous cells editor press key: shift + tab

== Frequently Asked Questions ==

= How to output the table html? =

To render the table fields data as an html table in one of your template files (page.php, single.php) you can start with the following basic code example:

`
$table = get_field( 'your_table_field_name' );

if ( ! empty ( $table ) ) {

	echo '<table border="0">';

		if ( ! empty( $table['caption'] ) ) {

			echo '<caption>' . $table['caption'] . '</caption>';
		}

		if ( ! empty( $table['header'] ) ) {

			echo '<thead>';

				echo '<tr>';

					foreach ( $table['header'] as $th ) {

						echo '<th>';
							echo $th['c'];
						echo '</th>';
					}

				echo '</tr>';

			echo '</thead>';
		}

		echo '<tbody>';

			foreach ( $table['body'] as $tr ) {

				echo '<tr>';

					foreach ( $tr as $td ) {

						echo '<td>';
							echo $td['c'];
						echo '</td>';
					}

				echo '</tr>';
			}

		echo '</tbody>';

	echo '</table>';
}
`

= Table field returns no data on get_field()? =

If the table has only one empty cell, then `get_field()` returns `FALSE`. `get_field()` returns NULL when a field is not stored in the database. That happens when a page is copied but not their fields content. You can check both with `empty()`…

`$table = get_field( 'your_table_field_name' );

if ( ! empty( $table ) ) {
	// $table is not FALSE and not NULL.
	// Field exists in database and has content.
}`

= How to handle line breaks? =

This is about displaying line breaks in the admin tables and getting line breaks as `<br>` when outputting the tables HTML.

**Converting Line Breaks for HTML Output**

To convert line breaks to `<br>` in tables HTML output the PHP function `nl2br()` can be used:

For line breaks in **table header cells** replace…
`
echo $th['c'];
`
with…
`
echo nl2br( $th['c'] );
`

For line breaks in **table body cells** replace…
`
echo $td['c'];
`
with…
`
echo nl2br( $td['c'] );
`

**Displaying Line Breaks in Editing Tables**

To display natural line breaks in the editing tables in the admin area, add the following styles to the admin area.

`
.acf-table-header-cont,
.acf-table-body-cont {
    white-space: pre-line;
}
`

One way to add these styles to the WordPress admin area is adding the following code to your functions.php file of the theme.

`
add_action('admin_head', 'acf_table_styles');

function acf_table_styles() {
  echo '<style>
    .acf-table-header-cont,
    .acf-table-body-cont {
        white-space: pre-line;
    }
  </style>';
}
`

= How to use the table field in Elementor Page Builder? =

In general, its up to Elementor to support ACF field types on the Elementor widgets. All supported ACF fields by Elementor [you can find here](https://docs.elementor.com/article/381-elementor-integration-with-acf). But because the table field is not a native ACF field, the support for this field may never happen.

For now the way to go is using the Elementors shortcode Widget. Before you can use a shortcode to display a table fields table, you have to setup a shortcode in functions.php. The following code does this. You can modify the table html output for your needs.

`function shortcode_acf_tablefield( $atts ) {

    $a = shortcode_atts( array(
        'table-class' => '',
        'field-name' => false,
        'post-id' => false,
    ), $atts );

    $table = get_field( $a['field-name'], $a['post-id'] );

    $return = '';

    if ( $table ) {

        $return .= '<table class="' . $a['table-class'] . '" border="0">';

            if ( ! empty( $table['caption'] ) ) {

                echo '<caption>' . $table['caption'] . '</caption>';
            }

            if ( $table['header'] ) {

                $return .= '<thead>';

                    $return .= '<tr>';

                        foreach ( $table['header'] as $th ) {

                            $return .= '<th>';
                                $return .= $th['c'];
                            $return .= '</th>';
                        }

                    $return .= '</tr>';

                $return .= '</thead>';
            }

            $return .= '<tbody>';

                foreach ( $table['body'] as $tr ) {

                    $return .= '<tr>';

                        foreach ( $tr as $td ) {

                            $return .= '<td>';
                                $return .= $td['c'];
                            $return .= '</td>';
                        }

                    $return .= '</tr>';
                }

            $return .= '</tbody>';

        $return .= '</table>';
    }

    return $return;
}

add_shortcode( 'table', 'shortcode_acf_tablefield' );`


Then use the shortcode in a Elementors shortcode widget like this, to **insert a table from the current page or post**…

`[table field-name="your table field name" table-class="my-table"]`

You also can **insert a table from another page or post**…

`[table field-name="your table field name" post-id="123" table-class="my-table"]`

Or you can **insert a table from a ACF option page**…

`[table field-name="your table field name" post-id="option" table-class="my-table"]`

= Updating a table using update_field() =

You can use the ACF PHP function `update_field()` to change a tables data.

Example: adding a new row
`
// the post ID where to update the table field
$post_id = 123;

// gets the table data
$table_data = get_field( 'table', $post_id );

// defines the new row and its columns
$new_row = array(

	// must define the same amount of columns as exists in the table

	// column 1
	array(
		// the 'c' stands for content of the cell
		'c' => 'Cell Content of Column 1',
	),

	// column 2
	array(
		'c' => 'Cell Content of Column 2',
	)
);

// adds the new row to the table body data
array_push( $table_data['body'], $new_row );

// saves the new table data
update_field( 'table', $table_data, $post_id );
`

= Third party plugins issues =

Since version 1.3.1 of the table plugin, the storing format of the table data changes from JSON string to serialized array for new or updated tables. The issue with JSON is because of third party plugins that do not properly applying `wp_slash()` to a post_meta value before updating with `update_post_metadata()`. This can break JSON strings because `update_post_metadata()` removes backslashes by default. Backslashes are part of the JSON string syntax escaping quotation marks in content.

The table field plugin prevents broken JSON strings to save as a table field data and throws an error message that explains the issue. But this may also breaks the functionality of the third party plugin trying to update the table data. You could disable the JSON string check in the table field plugin using the following code in the wp-config.php file. But then the table JSON data are no longer protected from destroing by `update_post_metadata()`. Use the following code in wp-config.php only, if you understand the risk…

`define( "ACF_TABLEFIELD_FILTER_POSTMETA", false );`

== Installation ==

This software can be used as both a WP plugin and a theme include.
However, only when activated as a plugin will updates be available.

= Plugin =
1. Copy the "advanced-custom-fields-table-field" folder into your plugins folder.
2. Activate the plugin via the Plugins admin page.


== Screenshots ==

1. The Field Settings

2. The Field Content Editing

2. Grab the rows and columns in the grey area and drag them.


== Translations ==

* English - default, always included
* German: Deutsch - immer dabei!
* Danish: Dansk - altid der!
* Polish: Polski - zawsze tam jest!

*Note:* Please [contribute your language](https://translate.wordpress.org/projects/wp-plugins/advanced-custom-fields-table-field) to the plugin to make it even more useful.


== Upgrade Notice ==


== Changelog ==

= 1.3.8 =
* Fixes an issue where the option "use header" was not applied on updating a field with update_field().
* Fixes an issue where percent characters in a table field content causes an JavaScript error.

= 1.3.7 =
* Fixes an issue where the table header was not displayed on a page preview.

= 1.3.6 =
* Fixes an issue when changing the field type to table of a field that already has content in the database from another field type.

= 1.3.5 =
* Fixes an issue that removes table header content using update_field() while option "use header" is set to "no".
* Fixes an issue with the update_post_metadata filter

= 1.3.4 =
* Fixes an issue that prevents the removal of table contents

= 1.3.3 =
* Fixes returning empty table after saving content containing a single quote.

= 1.3.2 =
* Fixes returning empty table after saving content containing quotes
* Fixes an issue using update_field() on a table field

= 1.3.1 =
* Changes table data storing format from JSON string to serialized array. This is due to an issue caused by third party plugins using update_post_meta() without providing wp_slash() to the value before. Existing table data values in JSON string format in the database will still exists and be compatible. When a field is saved again, the storage format changes from JSON to serialized array.
* Fixes an PHP error of table caption

= 1.3.0 =
* Adds support for table caption
* Fixes an JavaScript issue for ACF version 4

= 1.2.7 =
* Adds PHP constant ACF_TABLEFIELD_FILTER_POSTMETA. Setting this constant to false prevents an update_post_metadata filter looking for tablefield JSON strings destroyed by update_post_meta().

= 1.2.6 =
* Replaces jQuery.noConflict methode
* Prevents PHP error if table fields value is from a previous fieldtype

= 1.2.5 =
* Adds danish translation, thanks to Jeppe Skovsgaard

= 1.2.4 =
* Fixes backslashes on using update_field();

= 1.2.3 =
* Adds support for the ACF update_field() function. If you get the table fields data array by get_field(), you can change the table data array and using update_field() to save the changes to the field.

= 1.2.2 =
* Adds plugin version to table data for handling structural changes.
* Fixes loosing table data containing quotes on third party update_post_meta() actions to table field values. Limited to new fields or fields value changed since plugin version 1.2.2.
* Fixes an PHP warning since PHP 7.2 when body data is null

= 1.2.1 =
* Fixes not using user locale for translation
* Adds description for handling line breaks to plugins page

= 1.2 =
* Adds support for tab navigation. Uses shift + tab for backward navigation.
* Minor code improvements

= 1.1.16 =
* Keeps the WordPress admin area working, if tablefields value is not a valid JSON string. Logs the invalid value in the console for debugging.

= 1.1.15 =
* Adds polish translation by Pawel Golka

= 1.1.14 =
* Fixes table does not appear under certain field groups location rules

= 1.1.13 =
* Fixes an XSS issue within /wp-admin/ pages

= 1.1.12 =
* Adds support for field groups post taxonomy rule

= 1.1.11 =
* Fixes rerendering of tables while changing other content

= 1.1.10 =
* Fixed table functionality with respect to the ACF rules

= 1.1.9 =
* Fixes returning false on single empty table cell for ACF version 4

= 1.1.8 =
* Fixes support for user edit pages

= 1.1.7 =
* Fixes support for user profile pages

= 1.1.6 =
* UI: Fixes table header switch off problem

= 1.1.5 =
* Fixes issue occured after database migration with plugin "WP Migrate DB"

= 1.1.4 =
* Takes over icon class changes in ACF-Pro since version 5.3.2

= 1.1.3 =
* Fixes wrong function name 'change_template'

= 1.1.2 =
* Fixes missing table on page template change

= 1.1.1 =
* Compatibility to icon changes of ACF Pro version 5.2.8
* Fixes table top legend height in FireFox
* Fixes delete column icon position in IE

= 1.1 =
* Improved User Experience when deleting all columns and rows.
* Compatibility to changes of ACF Pro version 5.2.7.

= 1.0.7 =
* Use wp_json_encode() instead of json_encode(). This may fix issues in rare enviroments.

= 1.0.6 =
* If the table has only a single empty cell (this is by default), no table data will return now.

= 1.0.5 =
* Fixes javascript issue in IE 8.
* Fixes missing table borders and table header´s height in FireFox.

= 1.0.4 =
* Fixes an uri problem on some hosts.

= 1.0.3 =
* Fixes an php error on HTTP_REFFERER.

= 1.0.2 =
* Fixes error when including the plugin from inside a theme.

= 1.0.1 =
* Fixes ACF validation error "required" when header option "use table header" was used and unchecked.

= 1.0 =
* Official Release of the free version
