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Question What are "breadcrumbs," and how can I customize them?
Answer Breadcrumbs are a navigation aid that shows the user their current location within the website's hierarchy. In Composr, breadcrumbs are customizable through an XML file.

You can override default breadcrumbs using "match-keys" to target specific pages and define the desired breadcrumb structure. This allows you to adjust the breadcrumb trail to better match your website's organization.

To edit, go to Admin Zone > Structure > Configure breadcrumb overrides.
Question How can I control which panels are displayed on specific pages?
Answer Panels are the areas around your main content area where you can place menus, blocks, and other dynamic elements. You can control panel visibility using display rules within your panel's Comcode:
{+START,IF,{$NEQ,{$PAGE},example_page_1,example_page_2,example_page_3}}
... panel content ...
{+END}

This example prevents the panel from showing on pages named "example_page_1," "example_page_2," and "example_page_3."
Question What is a "page-link," and how does it differ from a URL?
Answer A page-link is a Composr-specific way to reference a page or screen within your website. It's a simplified, local representation of a URL, independent of the URL scheme you might be using.

For example, the page-link site:downloads:browse:10 points to the download category with ID 10 in the site zone. This page-link remains consistent even if your URL scheme changes the way URLs are structured. Page-links also do not consider monikers, so if a URL moniker changes, page-links will stay the same.

This is a powerful feature as you can use the Comcode [page="page-link"]Page title[/page] tag to generate URLs of local content. And these will always work regardless of URL scheme or moniker.
Question How do menus work in Composr, and can I customize them?
Answer Composr has a flexible menu system that can be customized to your needs.
  • Default Menu: Generated automatically from the Sitemap, reflecting the structure of your content.
  • Editable Menus: You can create and fully customize these menus, adding links to specific content or external websites.

Menus can be added to panels (sidebars, headers, footers) or embedded directly within Comcode pages. The menu editor provides tools for adding branches, setting captions, tooltips, and URLs, and even defining context-sensitive behavior using "match-keys."
Question What are "zones" in Composr, and what are they used for?
Answer Zones are like sub-sites within your Composr website. They provide a way to organize content and apply different settings, like permissions, themes, and navigation. Some default zones include:
  • Welcome Zone: The initial landing page, often used for login/signup.
  • Site Zone: Your main website content, with features for viewing, submitting, editing, and deleting content on the member level.
  • Admin Zone: For site administrators to manage the website.
  • Content Management Zone: Where content is added, edited, and deleted, typically by site staff.
  • Forum Zone (if using Conversr): Houses the forum section of your site.
Question What are the different ways to control access in Composr?
Answer Composr offers a robust permission system with various methods for controlling access:
  • Zones, Pages, and Categories: Control which usergroups can view specific zones, pages, and categories (permissions).
    • Admin Zone > Security > Permissions Tree Editor, or on the UI for the Zone / Page / Category.
  • Global Privileges: Define permissions for actions like using advanced Comcode or bypassing the word filter, applicable across the entire site.
    • Admin Zone > Security > Global privileges
  • Module/Page Overrides: Tailor privileges for particular content types by overriding them on the controlling module or page.
    • Admin Zone > Security > Permissions Tree Editor [> Content permissions]
  • Category Overrides: Modify privileges for specific categories, allowing fine-grained control over actions within those categories.
    • Admin Zone > Security > Permissions Tree Editor
  • Match-key Permissions: Implement ad-hoc access control based on specific match-keys, offering flexibility beyond traditional permission structures.
    • Admin Zone > Security > Match-key page restrictions
Question What happens when I add a new usergroup to a third-party forum integrated with Composr?
Answer If you are not using Conversr as your forum, Composr won't automatically assign any permissions to the new usergroup. To rectify this, you can use the "Absorb usergroup-permissions" feature in the Admin Zone. This tool allows you to copy the permissions from an existing usergroup to the newly created one, ensuring consistent access and functionality.
Question What are some security considerations regarding super-moderators and super-administrators?
Answer While super-moderators have extensive access to manage your site, certain sensitive privileges are reserved for super-administrators. This includes the ability to impersonate other users, execute arbitrary code, and view private content. These restrictions help prevent potential privilege escalation and ensure the overall security of your website. Exercise caution when granting super-moderator status and trust only reliable individuals.
Question What are some useful tools for debugging permission issues?
Answer Composr provides a couple of tools to help pinpoint permission problems:
  • FirePHP: This browser add-on allows you to view detailed logs of permission checks performed by Composr. By analyzing these logs, you can identify which checks are failing and adjust your settings accordingly.
  • Permission Check Logging: Enable logging of failed permission checks to a file (data_custom/permission_checks.log). This provides a persistent record of permission issues that you can review and troubleshoot.
Question How can I test if my permission settings are working correctly?
Answer Composr's "SU" feature allows administrators to temporarily assume the identity of another user, enabling you to experience the site as they would. Simply enter the desired username in the "SU" box in the footer. You can also use "Guest" to browse as an unauthenticated visitor. Remember that using "SU" doesn't accurately reflect online status and retains administrator access to sensitive areas.

Top 10 Entries

Question What is the Composr Member System?
Answer The Composr Member System is the system used by the Conversr forum software to manage user accounts and information. This includes usernames, passwords, profile information, and usergroups. It also handles user registration, login, and account management. For websites not using Conversr, the member system of the third-party forum software would be used.
Question Can I Use Composr Galleries to Publish Podcasts?
Answer Yes, Composr supports creating podcasts from galleries. The podcast URL follows this format: http://yourbaseurl/backend.php?mode=galleries&select=galleryname&type=rss&itunes=1. Replace yourbaseurl and galleryname accordingly. This URL can be used to subscribe to the podcast in iTunes or other podcast applications.
Question How Do Gallery Slide-shows Work?
Answer When viewing an image or video in a gallery, visitors can initiate a slide-show that automatically cycles through subsequent entries. The slide-show can be paused with a click or keypress. The default slide-show speed can be adjusted by modifying the GALLERY_ENTRY_SCREEN.tpl template.
Question What are Watermarks and How Do They Work?
Answer Watermarks are semi-transparent images overlaid on gallery images to mark their origin or deter unauthorized use. When you add or edit a gallery, you can choose to apply watermarks to the corners of images. Watermarking applies permanently to the uploaded image. Composr uses a reverse tree structure for watermarks: if a sub-gallery doesn't have a watermark defined, it inherits the watermark from its parent gallery.
Question Can Members Create Their Own Personal Galleries?
Answer Yes, members with the "have personal galleries" permission can create their own galleries. These personal galleries are displayed under designated "Personal category container" galleries. They also show up in a tab on the member's profile. Members can only add content to their own galleries unless they have the "Submit to categories belonging to other members" permission.
Question What are Rep-Images and How Do I Set Them?
Answer Rep-images, short for "representative images," are thumbnails that represent a gallery when it's displayed within a list of galleries. They offer a visual preview of the gallery's contents. You can set a rep-image when adding or editing a gallery, or when adding an image to a gallery.
Question How Do I Import Images in bulk into a Gallery?
Answer You can import images in bulk using a CSV file. The file should be named descriptions.csv and placed in the uploads/galleries directory. The first column should contain filenames (without the path), and the second column should contain descriptions. The filenames should correspond to images also located in the uploads/galleries directory. Composr will automatically match the descriptions to the images during import.
Question What Image and Video Formats are Supported?
Answer Images:
  • .jpg/.jpeg: Highly compressed, best for photos due to minimal noticeable quality loss.
  • .png: Good compression with no quality loss, ideal if bandwidth isn't a concern.
  • .gif: Limited to 256 colors and poor compression. Better alternatives are video or APNG.
Note that Composr does not support SVG because hackers can leverage the XML-like structure of SVG files to compromise a website.

Videos:
  • .mp4 (h.264 aac encoding): The recommended format, widely supported.
  • .mov (h.264 aac encoding): Identical to .mp4.
  • .webm: Supported natively in most browsers, but requires plugins for Internet Explorer/Microsoft Edge and Safari.

Other formats, while they may work, are generally discouraged due to compatibility issues and lack of consistent addon or browser support.
Question What are Composr Galleries?
Answer Composr Galleries are a system for storing, organizing, and displaying images and videos. They function like categories, allowing you to group related media together. Galleries can be structured hierarchically, with sub-galleries nested under parent galleries, similar to a folder system. Each gallery has settings that control its appearance and behavior.
Question How are forums structured in Composr?
Answer Composr forums are organized hierarchically:
  • Forum Groupings: Broad categories that contain forums.
  • Forums: Contain topics related to a specific subject.
  • Sub-forums: Forums nested under other forums, providing further categorization.
  • Topics: Threads of conversation containing a series of posts.
  • Posts: Individual messages within a topic.