Cake\ORM\Behavior\TranslateBehavior::beforeFind PHP Method

    public function beforeFind(Event $event, Query $query, $options)
    {
        $locale = $this->locale();
        if ($locale === $this->config('defaultLocale')) {
            return;
        }
        $conditions = function ($field, $locale, $query, $select) {
            return function ($q) use($field, $locale, $query, $select) {
                $q->where([$q->repository()->aliasField('locale') => $locale]);
                if ($query->autoFields() || in_array($field, $select, true) || in_array($this->_table->aliasField($field), $select, true)) {
                    $q->select(['id', 'content']);
                }
                return $q;
            };
        };
        $contain = [];
        $fields = $this->_config['fields'];
        $alias = $this->_table->alias();
        $select = $query->clause('select');
        $changeFilter = isset($options['filterByCurrentLocale']) && $options['filterByCurrentLocale'] !== $this->_config['onlyTranslated'];
        foreach ($fields as $field) {
            $name = $alias . '_' . $field . '_translation';
            $contain[$name]['queryBuilder'] = $conditions($field, $locale, $query, $select);
            if ($changeFilter) {
                $filter = $options['filterByCurrentLocale'] ? 'INNER' : 'LEFT';
                $contain[$name]['joinType'] = $filter;
            }
        }
        $query->contain($contain);
        $query->formatResults(function ($results) use($locale) {
            return $this->_rowMapper($results, $locale);
        }, $query::PREPEND);
    }