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USERS AND ROLES
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access the Plugins Add New screen, search for plugins, and install them but s/he won t be able to activate the new plugin or see the list of installed plugins. These menu problems are currently under discussion in the WordPress bug database and will be addressed when the user/role system is rewritten.
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It takes just one line of code, Listing 10-10, to remove a role. Listing 10-10. Removing a role < php remove_role('designer'); > If the deleted role has any users assigned to it, their role will be set to None until you assign them another one. You can use the Bulk Edit feature to reassign many users at once.
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Caution: I do not recommend removing any of the five built-in roles, even if you don t plan to use them. Each of the administration screens (and the menu items leading to them) appears only if you have the capability to see it. If you remove the built-in roles, you ll need to make certain you have created other roles with those capabilities, or you ll find yourself locked out of your site.
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As you can see, changing a lot of capabilities for various roles would involve a cumbersome amount of code. And writing the code by hand means you can t easily delegate the task to other adminstrators, unless they re as proficient with PHP as you are. Fortunately, there are several plugins that make role management a much easier task by providing a complete user interface. Members is the most complete and up to date.
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Members Plugin
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Justin Tadlock s plugin aims to replace the venerable Role Manager plugin. Role Manager was for a long time the best choice for managing roles and capabilities, but it has not been updated since WordPress 2.6 was released, and some of its features no longer work. The Members plugin is a wonderful replacement. In addition to managing roles, it adds other features, such as private content control. Figure 10-16 shows the Members screen allowing you to edit the administrator role.
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Figure 10-16. Editing the administrator role with the Members plugin
Summary
In this chapter, I ve looked at the built-in user profiles. I ve shown you a few ways to change and extend the profiles, and how to display user information in themes. I ve also covered the built-in roles, how roles define the editorial workflow, and how to change that workflow with plugins. Finally, you learned how to modify, create, and remove roles. In the next chapter, I ll go over some of the common performance and security issues you ll find in a typical WordPress installation, and I ll show you some plugins and configuration settings that can speed up and secure your site.
C H A P T E R 11
Performance and Security
WordPress is database-driven, so it s not quite as fast at serving up individual pages as a CMS that writes static files to the server, like Movable Type. However, there are a number of things you can do to improve its performance, starting with caching dynamic output to static pages. I ll explain how caching works and show you how to set it up. I ll also look at some ways to identify performance problems in your installation. The down side of being the most popular CMS in the world is that WordPress attracts a lot of attention from would-be hackers. The development team does a great job of responding to newly discovered vulnerabilities quickly, so staying up to date with the latest release is the most important thing you can do to protect yourself from attacks. However, there are a number of other little things you can do, and I ll walk you through them in the second half of this chapter.
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