Same name in other branches

1. 9 core/modules/views/src/Plugin/views/style/StylePluginBase.php \Drupal\views\Plugin\views\style\StylePluginBase::renderGrouping()
2. 8.9.x core/modules/views/src/Plugin/views/style/StylePluginBase.php \Drupal\views\Plugin\views\style\StylePluginBase::renderGrouping()
3. 10 core/modules/views/src/Plugin/views/style/StylePluginBase.php \Drupal\views\Plugin\views\style\StylePluginBase::renderGrouping()

Group records as needed for rendering.

Parameters

$records: An array of records from the view to group.

$groupings: An array of grouping instructions on which fields to group. If empty, the result set will be given a single group with an empty string as a label.

$group_rendered: Boolean value whether to use the rendered or the raw field value for grouping. If set to NULL the return is structured as before Views 7.x-3.0-rc2. After Views 7.x-3.0 this boolean is only used if $groupings is an old-style string or if the rendered option is missing for a grouping instruction.

Return value

array The grouped record set. A nested set structure is generated if multiple grouping fields are used.

[
    'grouping_field_1:grouping_1' => [
        'group' => 'grouping_field_1:content_1',
        'level' => 0,
        'rows' => [
            'grouping_field_2:grouping_a' => [
                'group' => 'grouping_field_2:content_a',
                'level' => 1,
                'rows' => [
                    $row_index_1 => $row_1,
                    $row_index_2 => $row_2,
                ],
            ],
        ],
    ],
    'grouping_field_1:grouping_2' => [],
];

2 calls to StylePluginBase::renderGrouping()

EntityReference::render in core/modules/views/src/Plugin/views/style/EntityReference.php

StylePluginBase::render in core/modules/views/src/Plugin/views/style/StylePluginBase.php

Render the display in this style.

File

core/modules/views/src/Plugin/views/style/StylePluginBase.php, line 565

Class

StylePluginBase

Base class for views style plugins.

Namespace

Drupal\views\Plugin\views\style

Code

public function renderGrouping($records, $groupings = [], $group_rendered = NULL) {
    // This is for backward compatibility, when $groupings was a string
    // containing the ID of a single field.
    if (is_string($groupings)) {
        $rendered = $group_rendered ?? TRUE;
        $groupings = [
            [
                'field' => $groupings,
                'rendered' => $rendered,
            ],
        ];
    }
    // Make sure fields are rendered
    $this->renderFields($this->view->result);
    $sets = [];
    if ($groupings) {
        foreach ($records as $index => $row) {
            // Iterate through configured grouping fields to determine the
            // hierarchically positioned set where the current row belongs to.
            // While iterating, parent groups, that do not exist yet, are added.
            $set =& $sets;
            foreach ($groupings as $level => $info) {
                $field = $info['field'];
                $rendered = $info['rendered'] ?? $group_rendered;
                $rendered_strip = $info['rendered_strip'] ?? FALSE;
                $grouping = '';
                $group_content = '';
                // Group on the rendered version of the field, not the raw.  That way,
                // we can control any special formatting of the grouping field through
                // the admin or theme layer or anywhere else we'd like.
                if (isset($this->view->field[$field])) {
                    $group_content = $this->getField($index, $field);
                    if ($this->view->field[$field]->options['label']) {
                        $delimiter = $this->view->field[$field]->options['element_label_colon'] ? ': ' : ' ';
                        $group_content = $this->view->field[$field]->options['label'] . $delimiter . $group_content;
                    }
                    if ($rendered) {
                        $grouping = (string) $group_content;
                        if ($rendered_strip) {
                            $group_content = $grouping = strip_tags(htmlspecialchars_decode($group_content));
                        }
                    }
                    else {
                        $grouping = $this->getFieldValue($index, $field);
                        // Not all field handlers return a scalar value,
                        // e.g. views_handler_field_field.
                        if (!is_scalar($grouping)) {
                            $grouping = hash('sha256', serialize($grouping));
                        }
                    }
                }
                // Create the group if it does not exist yet.
                if (empty($set[$grouping])) {
                    $set[$grouping]['group'] = $group_content;
                    $set[$grouping]['level'] = $level;
                    $set[$grouping]['rows'] = [];
                }
                // Move the set reference into the row set of the group we just determined.
                $set =& $set[$grouping]['rows'];
            }
            // Add the row to the hierarchically positioned row set we just determined.
            $set[$index] = $row;
        }
    }
    else {
        // Create a single group with an empty grouping field.
        $sets[''] = [
            'group' => '',
            'rows' => $records,
        ];
    }
    // If this parameter isn't explicitly set, modify the output to be fully
    // backward compatible to code before Views 7.x-3.0-rc2.
    // @todo Remove this as soon as possible e.g. October 2020
    if ($group_rendered === NULL) {
        $old_style_sets = [];
        foreach ($sets as $group) {
            $old_style_sets[$group['group']] = $group['rows'];
        }
        $sets = $old_style_sets;
    }
    return $sets;
}

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