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Question What is rate limiting and how can I enable it in Composr?
Answer Rate limiting prevents server overload by restricting the number of requests allowed from a single IP address within a specific timeframe. To enable Composr's built-in rate limiting, add the following to your _config.php file:

Code (PHP)

$SITE_INFO['rate_limiting'] = '1';
$SITE_INFO['rate_limit_time_window'] = '10';
$SITE_INFO['rate_limit_hits_per_window'] = '5';
 

This configuration limits each IP to 5 requests every 10 seconds. This feature generates soft errors early in the process before Composr fully loads.
Question How can I reduce disk activity to improve performance?
Answer If your hard disk is slow, you can implement the following settings in your _config.php file to minimize disk access:
  • $SITE_INFO['disable_smart_decaching'] = '1';
  • $SITE_INFO['no_disk_sanity_checks'] = '1';
  • $SITE_INFO['hardcode_common_module_zones'] = '1';
  • $SITE_INFO['prefer_direct_code_call'] = '1';
  • $SITE_INFO['charset'] = 'utf-8';
  • $SITE_INFO['known_suexec'] = '1';
  • $SITE_INFO['dev_mode'] = '0';
  • $SITE_INFO['no_extra_logs'] = '1';
  • $SITE_INFO['no_extra_bots'] = '1';
  • $SITE_INFO['no_extra_closed_file'] = '1';
  • $SITE_INFO['no_installer_checks'] = '1';
  • $SITE_INFO['assume_full_mobile_support'] = '1';
  • $SITE_INFO['no_extra_mobiles'] = '1';

Note: These settings override default behaviors and may have unintended consequences. Use with caution.
Question What is static caching and how do I enable it?
Answer Static caching drastically improves performance by serving pre-generated pages to bots and guests. This works because these users typically don't require dynamic content. To enable it:
  • Go to the Installation Options editor (yourbaseurl/config_editor.php). You will need your maintenance password.
  • Activate the static cache option.

Composr intelligently determines what to cache, and you can further control this via options within the Installation Options. Be aware that enabling static caching may disable eCommerce features for guests unless specifically configured.
Question What are Composr caches and how do they improve website performance?
Answer Composr utilizes various types of caches to enhance performance by storing pre-calculated results and reducing repetitive tasks. These caches include:
  • Language cache: Eliminates the need to parse language files on each page load.
  • Template cache: Avoids reparsing template files repeatedly.
  • Comcode page cache & Comcode cache: Reduces the need to parse Comcode pages and general Comcode usage.
  • Block cache: Caches blocks based on their parameters, minimizing execution.
  • Theme image cache: Prevents redundant searches for theme images.
  • Values caches: Stores calculated values like member post counts.
  • Persistent cache: Keeps frequently used data in memory for faster access.
  • Advanced admin cache: Allows admins to view cached pages while the server generates updates.
  • Static cache: Serves static pages to bots and guests, bypassing much of the framework.
  • Self learning cache: Optimizes resource loading by learning which resources each page requires.
Question How can I troubleshoot notification problems?
Answer If you're having issues with notifications, here are some troubleshooting steps:
  • Check Email Logs: View the email log (Admin Zone > Audit > E-mail queue/log) to see what notifications have been sent.
  • Use the SU Feature: Impersonate a member using the SU feature (described in the "Testing access and privileges" tutorial) to view their notification settings and confirm they are set up correctly.
  • Enable Carbon-copy Email: Configure a "Carbon-copy e-mail address" in the configuration settings to receive copies of all outgoing emails, including notifications. This helps you monitor email delivery.
  • Verify System Scheduler: Ensure the system scheduler is configured correctly if members are not receiving digest emails.
  • Check Digest Settings: Confirm that "Enable digest notifications" is enabled in the Messages configuration settings.
  • Review "Safety listing limit": If a notification has too many categories, members might not see the full selection tree. Adjust the "Safety listing limit" in the configuration settings if necessary.
Question Can I control which notifications members receive?
Answer Yes, you can control notification settings through two mechanisms:
  • Notification Defaults: You can set default notification preferences for all members. You can enable or disable specific notifications and choose the delivery method (Admin Zone > Setup > Notification defaults).
  • Notification Lock-down: You can force members to receive or prevent them from receiving certain notifications (Admin Zone > Setup > Notification lock-down). This allows you to enforce specific notification policies and manage email volume.
Question What notification options are available to members?
Answer Members can choose from a wide range of notifications, including:
  • Content Updates: Notifications for new or updated content, such as news articles, forum posts, and gallery images.
  • Private Messages: Alerts for new private messages received.
  • Friend Requests: Notifications for new friend requests.
  • Administrative Actions: Alerts for actions taken by site administrators, such as account approvals or content moderation decisions.

Members can choose to receive notifications via:
  • Email: Notifications sent directly to their email address.
  • Digest Email: Combined summaries of activity sent in batched emails. This requires the system scheduler and the digest e-mails configuration option to be enabled.
  • Private Topics: Notifications delivered as private forum topics.
  • SMS: Notifications sent as text messages (requires configuration and incurs costs).
  • Web Notifications: Real-time alerts displayed within the Composr interface.
Question Can I share content like news and banners across the M.S.N.?
Answer Yes, you can share news by placing it on the central site and using RSS blocks on satellite sites to display it. Banners can be shared by adding them to the central site and configuring satellite sites to use the central site's banner.php script.
Question What should I consider when managing usergroups for subcommunities?
Answer
  • Rank ladders: Use the default rank ladder for main site ranks and secondary usergroups for subcommunity memberships.
  • New member status: Set default usergroups for new members to grant them initial access while allowing removal if necessary.
  • Leadership: Assign leaders to usergroups to allow members to manage subcommunities.
  • Clubs: Consider using Clubs for member-driven subcommunities with their own forums.
Question What are Composr Clubs and how are they useful for subcommunities?
Answer Clubs are special usergroups in Conversr (Composr's forum system) designed for creating subcommunities. They come with their own dedicated forums and are managed by members, taking pressure off site staff.

Key features:
  • No special permissions by default, simplifying permission management.
  • Members can join and leave like regular usergroups.
  • Provide a dedicated forum for the club.

Top 10 Entries

Question Can I display different content to different usergroups?
Answer Yes, you can achieve this by leveraging Tempcode within your templates. By using conditional statements like {$IS_IN_GROUP} and {$HAS_PRIVILEGE}, you can show or hide specific content sections based on the user's group membership or privileges. This technique allows you to "tease" premium content to non-paying users or tailor the user experience based on their access level.
Question What are match-key permissions and why would I use them?
Answer Match-key permissions provide a more granular level of access control beyond the standard zone, page, and category permissions. They allow you to restrict access based on specific "match-keys", which are unique identifiers for different actions or content within Composr. For instance, you could use match-key permissions to prevent guests from submitting banners or to restrict access to the member directory for all but specific usergroups. You can also specify custom access denied errors for each match-key.

A "match-key" is typically a page-link, such as cms:cms_banners:add.
Question How can I control who can view specific pages or categories?
Answer You can manage access control for zones, pages, and categories primarily through the Permissions Tree Editor (Admin Zone > Security > Permissions Tree Editor). This tool provides a central location to set view permissions for different usergroups. You can also edit individual zone and category permissions through their respective editing interfaces, but the Permissions Tree Editor offers a more streamlined and efficient approach.
Question What is the difference between access permissions and privileges in Composr?
Answer Access permissions control whether members of a certain usergroup can view specific areas of your site, such as zones, pages, and categories. A member only needs one of their usergroups to have access permission to view the content. But permissions work on a deny-first policy; if one of the permissions applicable to viewing something is denied for a usergroup, then the whole thing is denied for that usergroup (e.g. even if a download itself grants access, access will be denied if its category denies access).

Privileges, on the other hand, dictate what actions a usergroup is allowed to perform across the website, like using advanced Comcode or bypassing the word filter.
Question How can I change the news archive display to show summaries instead of just headlines?
Answer By default, the news archive screen shows only headlines. To display summaries like the news block, add :inline=1 to the page-link. For example, if your news archive page-link is site:news, modify it to site:news:inline=1. This will show summaries instead of just the headlines in the archive view.
Question What are Trackbacks and how do they work in Composr?
Answer Trackbacks are a blogging feature that creates a link from an article on one blog to an article on another, acting as a citation mechanism.

How Trackbacks Work:
  • The original article includes a "trackback" link in its HTML.
  • When another blogger writes an article referencing the original, their software uses the trackback link to inform the original site.
  • Composr receives the trackback and displays a list of articles linking back to the original.

To enable trackbacks, go to Admin Zone > Setup > Configuration > Feature options and check the "Trackbacks" option. You can then enable trackbacks for individual content items.
Question How can I filter the news archive to show specific content?
Answer The news system allows advanced filtering:
  • Blog vs. Non-Blog Posts: Choose to display blog posts only, regular news posts only, or both.
  • Category Filtering: Limit results to specific news categories.
  • Double Filtering: Apply a second category filter for a two-level categorization system (useful for large sites).

These filters are controlled through parameters passed to the news blocks and carried through navigation links. When viewing a news post, you can also filter by the categories associated with that post.
Question How do I display external RSS feeds on my Composr website?
Answer Composr offers two blocks for displaying RSS and Atom feeds in a news-like format:
  • main_rss block: Suitable for main content areas
  • side_rss block: Designed for sidebars and smaller spaces

To add a block, use the Block Construction Assistant or insert the following Comcode into your page:

[block="http://example.com/feed.xml"]main_rss[/block] [block="http://example.com/feed.xml"]side_rss[/block]
Replace "http://example.com/feed.xml" with the actual feed URL.

Important: Exercise caution when using external feeds. Ensure the source is trustworthy, as malicious feeds can contain harmful code.
Question What are RSS/Atom feeds and how do they benefit my website?
Answer Feeds, in formats like RSS and Atom, are XML files that syndicate your website content, making it accessible beyond your website. They can be viewed using feed reader applications (e.g., Feedly, Vienna) or integrated into other websites or web browsers.

Composr supports both RSS and Atom for syndicating news and other content. While RSS is more common, Atom is a cleaner, standardized format. Both effectively share your content updates.

Benefits:
  • Wider audience reach: Your content becomes accessible to those using feed readers and aggregators.
  • Content repurposing: Other websites can incorporate your feed, increasing visibility.
  • Increased traffic: Users discovering your content in feeds may visit your website directly.
  • Staying on top: Those who use your RSS feeds will see when you post new news articles.
Question What are Personal Categories/Blogs in Composr? How do I create one?
Answer Composr allows members of permitted usergroups to have their own personal news categories, also known as "blogs". These blogs appear as a tab on the member's profile (Conversr-only) and may also appear in the main news block depending on your configuration.

To create a blog, a member simply adds a news post and selects their personal category. If the category doesn't exist, it will be automatically created upon submission.

A dedicated "Blogs" CMS module (Admin Zone > Content > Blogs) is available if the "Separate blogs" configuration option is enabled. This simplified module focuses on blog posting and can be used to restrict members from submitting to general website news.