Access Control in Drupal CMS

The access control list in the Drupal's admin panel -> People -> Permissions is quite self-explanatory.

There you can modify the predefined permissions for the different user types (anonymous, authenticated and administrator).

A typical use of the access control is when you want to make some parts of your site available only for registered users. The default access control rules are quite safe, but you might want to change them to satisfy better your needs. Spend some time playing with the permissions options to better understand what you can do.

Using Drupal Taxonomy to Post Content

Now that we have created the vocabulary and we have added terms to it, we can use it when posting content on the web site.

Note that the tags option auto completes the vocabulary field with one of the terms we have created before.If you choose terms from the vocabulary they will be displayed as tags on the page you have posted them as shown below:

Note that the terms presented do not indicate their underlying structure to the reader. The vocabulary just displays all terms for this content item.The Drupal taxonomy provides a great way to manage the content sorting of your web site. Those are just basic examples and you can achieve amazing results extending the taxonomy vocabularies and terms for your web site.

Managing an Existing Vocabulary

There are 3 actions you can take with an existing vocabulary.

• Edit Vocabulary -  This refers to changing the settings you have chosen upon creating the vocabulary.

• List Terms - It will display a list of all terms currently added to this vocabulary.

• Add Terms -  This will allow you to add a new term to an already created vocabulary.

By default the terms list for a newly created vocabulary will be empty. You will need to create terms for the vocabulary via the Add terms functionality:

We have added several terms in our vocabulary and here is how the list looks now:

You can now edit each of the terms you have added by clicking the corresponding button. Drupal allows you to adjust the terms order. You can do so by holding down the left mouse button on the cross icon at the left and dragging the term to the desired position in the list.Note that when creating or editing a term you have relations you can set for it.

Those settings will provide you with four different options.

1. You will be able to define an already existing term as parent term for the new one. Note that if you hold down Ctrl you will be able to set more than one term as parent for the new one. Note that setting multiple parents for a single item will disable the drag and drop list functionality. It will be re-enabled if you reduce the parents for each term to one.

2. You can set the weight for each term. The same as with vocabularies this resembles the order in which the terms will be listed in the vocabulary.

Once you have made the desired changes click the save button.

Creating a New Vocabulary for Drupal Taxonomy

It is important to note that content can belong to several vocabularies at once. Also vocabulary relations can be modified dynamically as new content or new vocabularies are added. This saves the trouble to manually update the relationships each time.

The taxonomy module in Drupal allows multiple lists of categories for classification. It offers the possibility of creating thesauri (terms with horizontal relationships) and taxonomies (terms with hierarchical relationships). Basically, the taxonomy deals with a hierarchy of information and the thesaurus deals with relationships between terms. Taxonomy is what affects how exactly the content is organized.

Settings for the taxonomy module can be found in the Drupal admin area -> Structure -> Taxonomy.

You can add a new vocabulary using the "Add vocabulary" link.

The Name field is mandatory and if you want you can add a description.