Bolt\Config::parseContentType PHP Method

    protected function parseContentType($key, $contentType, $generalConfig)
    {
        // If the slug isn't set, and the 'key' isn't numeric, use that as the slug.
        if (!isset($contentType['slug']) && !is_numeric($key)) {
            $contentType['slug'] = Slugify::create()->slugify($key);
        }
        // If neither 'name' nor 'slug' is set, we need to warn the user. Same goes for when
        // neither 'singular_name' nor 'singular_slug' is set.
        if (!isset($contentType['name']) && !isset($contentType['slug'])) {
            $error = sprintf("In contenttype <code>%s</code>, neither 'name' nor 'slug' is set. Please edit <code>contenttypes.yml</code>, and correct this.", $key);
            throw new InvalidArgumentException($error);
        }
        if (!isset($contentType['singular_name']) && !isset($contentType['singular_slug'])) {
            $error = sprintf("In contenttype <code>%s</code>, neither 'singular_name' nor 'singular_slug' is set. Please edit <code>contenttypes.yml</code>, and correct this.", $key);
            throw new InvalidArgumentException($error);
        }
        // Contenttypes without fields make no sense.
        if (!isset($contentType['fields'])) {
            $error = sprintf("In contenttype <code>%s</code>, no 'fields' are set. Please edit <code>contenttypes.yml</code>, and correct this.", $key);
            throw new InvalidArgumentException($error);
        }
        if (!isset($contentType['slug'])) {
            $contentType['slug'] = Slugify::create()->slugify($contentType['name']);
        }
        if (!isset($contentType['name'])) {
            $contentType['name'] = ucwords(preg_replace('/[^a-z0-9]/i', ' ', $contentType['slug']));
        }
        if (!isset($contentType['singular_slug'])) {
            $contentType['singular_slug'] = Slugify::create()->slugify($contentType['singular_name']);
        }
        if (!isset($contentType['singular_name'])) {
            $contentType['singular_name'] = ucwords(preg_replace('/[^a-z0-9]/i', ' ', $contentType['singular_slug']));
        }
        if (!isset($contentType['show_on_dashboard'])) {
            $contentType['show_on_dashboard'] = true;
        }
        if (!isset($contentType['show_in_menu'])) {
            $contentType['show_in_menu'] = true;
        }
        if (!isset($contentType['sort'])) {
            $contentType['sort'] = false;
        }
        if (!isset($contentType['default_status'])) {
            $contentType['default_status'] = 'draft';
        }
        if (!isset($contentType['viewless'])) {
            $contentType['viewless'] = false;
        }
        if (!isset($contentType['liveeditor'])) {
            $contentType['liveeditor'] = true;
        }
        // Override contenttype setting with view and config settings
        if ($contentType['viewless'] || !$generalConfig['liveeditor']) {
            $contentType['liveeditor'] = false;
        }
        // Allow explicit setting of a Contenttype's table name suffix. We default
        // to slug if not present as it has been this way since Bolt v1.2.1
        if (!isset($contentType['tablename'])) {
            $contentType['tablename'] = Slugify::create()->slugify($contentType['slug'], '_');
        } else {
            $contentType['tablename'] = Slugify::create()->slugify($contentType['tablename'], '_');
        }
        if (!isset($contentType['allow_numeric_slugs'])) {
            $contentType['allow_numeric_slugs'] = false;
        }
        list($fields, $groups) = $this->parseFieldsAndGroups($contentType['fields'], $generalConfig);
        $contentType['fields'] = $fields;
        $contentType['groups'] = $groups;
        // Make sure taxonomy is an array.
        if (isset($contentType['taxonomy'])) {
            $contentType['taxonomy'] = (array) $contentType['taxonomy'];
        }
        // when adding relations, make sure they're added by their slug. Not their 'name' or 'singular name'.
        if (!empty($contentType['relations']) && is_array($contentType['relations'])) {
            foreach (array_keys($contentType['relations']) as $relkey) {
                if ($relkey != Slugify::create()->slugify($relkey)) {
                    $contentType['relations'][Slugify::create()->slugify($relkey)] = $contentType['relations'][$relkey];
                    unset($contentType['relations'][$relkey]);
                }
            }
        }
        return $contentType;
    }