![]() Possible view displays include a page available under certain URL path, a block to be placed in a theme region, or a feed to be exported in RSS or OPML formats. A single view can have multiple displays. Site builders will be able to continue making changes in development environments as needed. Then, they can push the changes as part of their normal configuration deployment strategy.Ī view instance is a set of configurations that describes how data in Drupal will be collected and presented to the site’s visitor. ![]() But more importantly, editors will not be able to modify the views configuration using the administration interface in production environments. For one, you gain a bit of performance as there is less code to execute on page loads. Once all the views for a site have been created, the Views UI module can be uninstalled and the individual view instances will continue working. It offers a setup wizard that guides you through the process of creating and configuring a view. The Views UI module is the visual user interface of the system. Using the Views UI module it is possible to create view instances which encapsulate the configuration of what elements to display and how. Having a basic understanding of Drupal concepts like nodes, content types, and fields suffices in most cases. One of the great benefits it provides is that site builders do not need to know SQL or details about the underlying database structure. Often described as a SQL query builder, it allows you to fetch data stored in Drupal’s database, assemble a list of results, and present them in various output format. The Views module is the engine of the whole system. There are three key terms that you need to be aware of: the Views module, the Views UI module, and a view instance. Also, you will find examples of blocks that are created using views. Today, you will learn how nodes, content types, and fields can be used as part of views configurations. As you might have already noticed, they build on each other. Let’s continue our journey to understand more Drupal concepts. For instance, you can present a table of user information and on the same page a link to download the data in CSV format. The same content can be presented in multiple formats at the same time. ![]() Example formats include a HTML table, a RSS feed, a PDF document, a CSV document, an interactive map, an image slideshow, or a JSON representation to be used as a REST endpoint. A view scans your website using any criteria you specify and presents the results in the format of your choice. It can a list of nodes, users, comments, taxonomy terms, files, etc. Learn how to migrate CSV / JSON / XML data to Drupal.In Drupal, a view is a listing of information.Go through the source code for the migrate_example_paths module discussed above.Processed 50 items (50 created, 0 updated, 0 failed, 0 ignored) - done with 'example_article_redirect' Next steps Processed 50 items (50 created, 0 updated, 0 failed, 0 ignored) - done with 'example_article_alias' Processed 50 items (50 created, 0 updated, 0 failed, 0 ignored) - done with 'example_article_data' Processed 5 items (5 created, 0 updated, 0 failed, 0 ignored) - done with 'example_category_data' So if we run all the migrations of this example, we should see them executing in the correct order like: $ drush mi -tag=example_article It will ensure that the example_article_data migration is executed before the alias and the redirect migrations. ![]() Since the migration of aliases and the migration of redirects both require access to the ID of the node which was generated during the article data migration, we need to add the above lines to define a migration_dependency. Having done so and having run this third migration as well, we are all set! Migration dependencies migration_dependencies: This will create 301 permanent redirects as opposed to 302 temporary redirects. We also specify a status_code and set it to 301. # We want to generate 301 permanent redirects as opposed to 302 temporary redirects. This way, the redirects will not break even if we change the URL alias for a particular node after running the migrations. Make the articles accessible at the path blog/.Migrate the contents of category.csv as terms of a category terms.Migrate the contents of article.csv as article nodes.Say we have two CSV files (given to us by the client): In this article, we'll discuss how to migrate URL aliases provided by the path module (part of D8 core) and URL redirects provided by the redirect module. When content URLs change during migrations, it is always a good idea to do something to handle the old URLs to prevent them from suddenly starting to throw 404s which are bad for SEO.
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