Thiết kế web với joomla 1.6(5).x part 24

Chặn người dùngCác Administrator Super có thể chặn các truy cập của người sử dụng bất kỳ. Nếu bạn có một người sử dụng vấn đề hoặc bạn chỉ cần đóng cửa một tài khoản tạm thời, chặn truy cập chỉ là một số cách để giữ cho người sử dụng trong hệ thống.
Nội dung trích xuất từ tài liệu:
Thiết kế web với joomla 1.6(5).x part 24 Chapter 10: Working with the User Manager Blocking users The Super Administrator can block the access of any user. If you have a problem user or you sim- ply need to shut down an account temporarily, blocking access is the only certain way of keeping the user out of the system.NoteBlocking a user only denies the user access to their account; it does not prevent them from visiting or viewingthe site. To block access, follow these steps: 1. Access the User Manager. 2. Click on the user’s name to open the Edit User dialogue. 3. Beside the field Block User, click the option Yes. 4. Click either the Save or the Apply icon. Blocking a user does not delete the user’s account. If the issue with the user is resolved, the Super Administrator need only change the option Block User back to No, and the user’s account becomes fully active.CautionBlocking a user effectively can be difficult if your site allows user registration, because blocking one accountdoes not prevent the user from obtaining a new account by re-registering under a new name or e-mail address. Creating User Registration By default, user registration is active in the Joomla! system. A site visitor can register and create his own account by clicking on the Create an Account link on the Login Form. You can use alterna- tives to the default approach, however. The User Registration settings can be manipulated by the administrator via the Global Configuration Manager. Using the Login module The Login module contains several elements: The login form itself, links to the Username Reminder and Password Reset functions, and a link to the Create an Account function. The latter is optional and can be de-activated, depending upon the settings in your Global Configuration Manager. Note the links below the form in the image, shown in Figure 10.6. 257Part II: Working with Content and Users FIGURE 10.6The Default Login Form module. Configuring user registration Although your Joomla! site has User Registration enabled by default, you can use several possible alternative settings. The default setting allows casual visitors to register, but access to the site is not automatic. After the user registers, the system sends a confirmation e-mail to the address entered during the registration process. The new user must then click on a link in that confirmation e-mail to validate and activate the account. Only after successful validation will the username and pass- word grant access to the site. By coupling the self-registration process with a validation procedure, site security is enhanced. The confirmation e-mail process helps protect you from automated registration routines, or from peo- ple who try to register without giving a valid e-mail address. The default approach to user registra- tion is commonly used and for many sites it is sufficient. However, if you are concerned about automated bots or spammers setting up accounts on your site, you should require a more rigorous registration process. It is possible to configure the site to use either more secure or less secure approaches to the registration process.258 Chapter 10: Working with the User ManagerTo create a more secure registration process, you can remove the possibility that a user can create anew account without action on the part of the administrator. You can do this by completely dis-abling the ability of users to register on the site. Though more secure, this approach is also moreinconvenient because you must rely solely upon a Super Administrator to create new accounts.To disable front-end user registration, follow these steps: 1. Log in to the back-end admin system. 2. Access the Global Configuration Manager by clicking the Global Configuration icon on the Control Panel, or by clicking the option Global Configuration on the Site menu. The Global Configuration Manager loads in your browser window. 3. On the Global Configuration Manager, click the System tab. After you click, the tab comes to the front. 4. In the section labeled User Settings, change the setting labeled Allow User Registration from Yes to No. 5. Click the Save icon on the toolbar when you are finished.If, on the other hand, you feel that your site can operate safely with a less secure user registrationprocess, you can allow user registration wi ...