Working with permissions and roles
Video: Working with permissions and rolesThis chapter will explore how to control access to site resources, demonstrate how to create permission programmatically, then how to implement a functional administrative interface for the cost of module. Access control is an extremely low level yet important aspect of creating an application. The user module in Drupal Core provides the mechanisms used by Drupal to manage user accounts. Including account creation, logins, and logouts, and assigning a role and permissions to a user. A Drupal role is a mechanism for assigning specific permissions to a group of users.
- Creating a custom permission
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Extend your Drupal 7 sites with custom modules, which allow you to create everything from admin interfaces to forms. Author Jon Peck describes how modules extend your base Drupal installation, then walks through how to write your own module with a practical example featuring geo-positioned alternative energy centers. The course also describes how to control access to site features, create new content types, build forms, understand data persistence, embrace coding standards, and much more.
- Creating your first module
- Interacting with hooks
- Working with permissions and roles
- Controlling access
- Adding a menu item to an admin interface
- Using the Form API (FAPI) to quickly create a form
- Creating custom form validation
- Manually creating a custom content type
- Validating user input
- Importing content using feeds
- Creating a block
- Understanding best practices and coding standards
Working with permissions and roles
This chapter will explore how to control access to site resources, demonstrate how to create permission programmatically, then how to implement a functional administrative interface for the cost of module. Access control is an extremely low level yet important aspect of creating an application. The user module in Drupal Core provides the mechanisms used by Drupal to manage user accounts. Including account creation, logins, and logouts, and assigning a role and permissions to a user. A Drupal role is a mechanism for assigning specific permissions to a group of users.
In your browser, navigate to People then click on the Permissions tab. You will see a list of the individual permissions available, and on the right, columns containing the available roles. By default, there are three roles that are available in a stock Drupal site installation. Anonymous which indicates that the viewer has not logged into the site, authenticated meaning a user has logged into the system successfully, and administrator who was assigned site administrator privileges to do things like add and remove users, edit content, and so forth.
The very first user account in the system, user ID 1, is considered to be a root user, meaning that they always have every permission no matter which roles are assigned. In the context of Drupal custom development it often makes sense to create a new permission in order to facilitate granular management. Permissions are checked automatically through the user access function from the user core module. While roles can be created programmatically as well I tend to advise not to do so as it forces developer's ideal organizational structure on to other site administrators.
In short, it makes sense to provide just enough granularity that different site administrators can manage in their own style without getting in the way. Therefore, in this module, I will create a custom permission to control access to the administrative interfaces for managing windfarms.
Find answers to the most frequently asked questions about Drupal 7 Custom Module Development .
Here are the FAQs that matched your search "" :
- Q: gmap3_tools is not working the way I expected it to. What version of gmap3_tools should I be using?
- A: Use the free exercise file containing the version of gmap3_tools used for recording; the published version of the module on drupal.org has changed since recording and is not backwards compatible.
- Q: I attempted to run the Drupal site root from the project files, but the site isn't loading. Why not?
- A: The Drupal configuration file in sites/default/settings.php contains database configuration specific to the environment used to record the movie. This may be different than your environment. Edit the file and search for "windfarms" - you may need to change the database host, username, password, db name and port to match your specific environment.
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