Beginning Drupal 8

Chapter 9 ■ Views
Figure 9-7. Rendering tags through views
As a quick demonstration of the power of taxonomy, tags, and views, click one of the tags that you
entered and Drupal will render a list of all content tagged on your site with that term. Behind the scenes,
Drupal is using Views to generate this list. But let’s take it one step further and allow users to filter content
that is rendered from our All Articles view by entering a tag.
Return to the Views administration page by clicking the Views link on the Structure page. Locate the
Recent Articles view that we have been working on and click the Edit button. Click the All Articles Page
display button in the Displays area of the view configuration page. Add a new filter for tags by clicking the
Add button in the Filter Criteria section. Search for the Tags field by entering “tags” in the Search box at the
top of the “Add filter criteria” form, and check the box for the “Content: Tags (field_tags)” field. Change the
For option to “This page (override)” so that the filter is only applied to the All Articles Page display, and click
the “Apply (this display)” button.
The next step in the process is to select the type of interface we wish to provide, either a Dropdown
list of terms to select from, or an Autocomplete field where the user types in the keyword to search for. The
Dropdown field will show the user what terms are available, whereas the Autocomplete approach requires
that the user know what terms they wish to search for. The option is dependent on your desired user
experience. For demonstration purposes, select Dropdown, and click the “Apply and continue button.”
The next step in the process is to configure the filter and how it will work. We want to allow users to
select which terms to filter on, so we’ll expose the filter to the user so they can control what content is
displayed by the view. To do so, check the “Expose this filter to visitors, to allow them to change it” check
box, leave the “Filter type to expose” setting to “Single filter,” and change the Label to “Select one or more
tags”. Leave the Operator set to “Is one of,” meaning the values that we want the user to select from are only
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