caching.php

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<?php
// simple cache
$is_simple_cache_on = (bool) elgg_get_config('simplecache_enabled');

$params = [
    '#type' => 'checkbox',
    '#label' => elgg_echo('installation:simplecache:label'),
    '#help' => elgg_echo('installation:simplecache:description'),
    'name' => 'simplecache_enabled',
    'switch' => true,
];

if (elgg()->config->hasInitialValue('simplecache_enabled')) {
    $params['disabled'] = true;
    
    // set checked state based on value in settings.php
    $is_simple_cache_on = (bool) elgg()->config->getInitialValue('simplecache_enabled');
    
    $params['#help'] .= ' ' . elgg_echo('admin:settings:in_settings_file');
}

$params['checked'] = $is_simple_cache_on;
$simple_cache_disabled_class = $is_simple_cache_on ? '' : 'elgg-state-disabled';

$body = elgg_view_field($params);

$cache_symlinked = _elgg_is_cache_symlinked();

$help = elgg_echo('installation:cache_symlink:description');
$help .= elgg_echo('installation:cache_symlink:paths', [elgg_get_root_path() . 'cache/', elgg_get_asset_path()]);
if ($cache_symlinked) {
    $help .= elgg_format_element('p', [], elgg_echo('installation:cache_symlink:warning'));
}

$body .= elgg_view_field([
    '#type' => 'fieldset',
    '#class' => ['elgg-divide-left', 'plm'],
    'fields' => [
        [
            '#type' => 'checkbox',
            '#label' => elgg_echo('installation:cache_symlink:label'),
            '#help' => $help,
            'name' => 'cache_symlink_enabled',
            'checked' => $cache_symlinked,
            'disabled' => !$is_simple_cache_on,
            'switch' => true,
        ],
        [
            '#type' => 'checkbox',
            '#label' => elgg_echo('installation:minify_js:label'),
            '#help' => elgg_echo('installation:minify:description'),
            'name' => 'simplecache_minify_js',
            'checked' => (bool) elgg_get_config('simplecache_minify_js'),
            'disabled' => !$is_simple_cache_on,
            'label_class' => $simple_cache_disabled_class,
            'switch' => true,
        ],
        [
            '#type' => 'checkbox',
            '#label' => elgg_echo('installation:minify_css:label'),
            '#help' => elgg_echo('installation:minify:description'),
            'name' => 'simplecache_minify_css',
            'checked' => (bool) elgg_get_config('simplecache_minify_css'),
            'disabled' => !$is_simple_cache_on,
            'label_class' => $simple_cache_disabled_class,
            'switch' => true,
        ],
    ],
]);

$body .= elgg_view_field([
    '#type' => 'checkbox',
    '#label' => elgg_echo('installation:systemcache:label'),
    '#help' => elgg_echo('installation:systemcache:description'),
    '#class' => 'mtm',
    'name' => 'system_cache_enabled',
    'switch' => true,
    'checked' => elgg_is_system_cache_enabled(),
]);

echo elgg_view_module('info', elgg_echo('admin:legend:caching'), $body, ['id' => 'elgg-settings-advanced-caching']);