OPTASY: Drupal Web Development Agency Toronto
(416) 243-2431Drupal SupportRequest A QuoteQuote

Main navigation

  • Home
  • Services
    • Digital Strategy
    • Design
    • Web Development
      • Drupal
      • WordPress
      • Magento
      • Laravel
      • Shopify
      • Sharepoint
      • Contentful
      • Gatsby
      • Next.js
      • Node.js
      • React
      • AngularJS
    • Mobile & App
      • IOS
      • Android
      • Augmented Reality
      • Artificial Intelligence
      • Virtual Reality
    • Maintenance & Support
      • Drupal Maintenance
      • Wordpress Maintenance
    • Staff Augmentation
  • Portfolio
    • Web
    • Mobile
    • Ar
  • About
    • Who we are
    • Values
    • Events
    • Awards
    • News
    • Careers
    • Partners
      • Acquia
      • Google
      • Pantheon
      • Shopify
      • Wordpress
  • Blog
    • Drupal
    • Drupal 8
    • HTML
    • CSS
    • Javascript
    • PHP
    • Microsoft
    • Web Design
    • Design
    • Tips
    • News
  • Contact
(416) 243-2431 Drupal Support Request A QuoteQuote

In light of the recent COVID-19 pandemic - OPTASY would like to offer DRUPAL website support for any Healthcare, Government, Education and Non-Profit Organization(s) with critical crisis communication websites or organizations directly providing relief. Stay Safe and Stay Well.

How to Add Autocomplete to Text Fields in Drupal 8: Defining a Custom Route
Drupal
Drupal 8
Tips

How to Add Autocomplete to Text Fields in Drupal 8: Defining a Custom Route

by RADU SIMILEANU on Jul 18 2018

Let's say that it's a WhatsApp-like, a decoupled, Drupal 8-backed, real-time chat platform that you're building. One using Node.js. In this case, implementing field autocomplete functionality becomes a must, doesn't it? But how do you add autocomplete to text fields in Drupal 8?

Needless to add that such otherwise "basic" functionality — implemented on fields like node reference and user/tags — would instantly:

 

  1. improve the user experience 
  2. increase the level of user interactivity and engagement

     

Users would group around different "channels" and be able to easily add new members. The auto-complete text fields will make the whole “new member coopting” process conveniently easy:

Users would only need to start typing and an array of name suggestions (of the already existing team members) would spring up.

But let's see, specifically, what are the steps to take to implement autocomplete functionality in Drupal 8:

 

1. The Drupal Autocomplete Form Element: Adding Properties to the Text Field

The first basic step to take is to define your form element. The one that will enable your app's users, on the front-end, to select from the suggested team members' names. For this:

 

  1. navigate to “Form” (you'll find it under “Entity”)
  2. scroll the menu down to ”NewChannelForm.php”

     

Note: using “#autocomplete_route_name element”, when defining your form element, will let Drupal know that it should ignore it on the front-end.

And now, let's go ahead and assign specific properties to your form's text field! For this:

 

  1. define “#autocomplete_route_name”, so that the autocomplete JavaScript library uses the route name of callback URL
  2. define “#autocomplete_route_parameters”, so that an array of arguments gets passed to autocomplete handler

     
$form['name'] = array(
    '#type' => 'textfield',
    '#autocomplete_route_name' => 'my_module.autocomplete',
    '#autocomplete_route_parameters' => array('field_name' => 'name', 'count' => 5),
);

And this is how you add #autocomplete callback to your fill-in form's text field in Drupal 8!

Note: in certain cases — where you have additional data or different response in JSON —  the core-provided routes might just not be enough. Then, you'll need to write an autocomplete callback using the “my_module. autocomplete“ route and the proper arguments (“name” for the field name and “5” as count, let's say).

And here's specifically how you write a custom route:

 

2. Add Autocomplete to Text Fields in Drupal 8: Define a Custom Route

How? By simply adding the reference to the route — where data will get retrieved from — to your “my_module.routing.yml file”:

 

my_module.autocomplete: path: '/my-module-autocomplete/{field_name}/{count}' defaults: _controller: '\Drupal\my_module\Controller\AutocompleteController::handleAutocomplete' _format: json requirements: _access: 'TRUE' 

Note: remember to use the same names in the curly braces (those that you inserted when you defined your “autocomplete_route_parameters”) when you pass parameters to the controller!

 

3. Add Controller with Custom Query Parameters

In the custom route that you will have defined, you'll have a custom controller AutocompleteController, with the handleAutocomplete method.

Well, it's precisely this method that makes sure that the proper data gets collected and properly formatted once served.

But let's delve deeper into details and see how precisely we can generate the specific JSON response for our text field element.

For this, we'll need to:

 

  • set up a AutoCompleteController class file under “my_module>src>Controller > AutocompleteController.php"

     
  • then, extend the ControllerBase class and set up our handle method (the one “responsible” for displaying the proper results)

     
  • it's the Request object and those arguments already defined in your routing.yml.file (“name” for the field name and “5” for the count, remember?) that will pass for your handler's parameters

     
  • the Request object will be the one returning the typed string from URL, whereas the “field_name” and the “count” route parameters will be the ones providing the results array.

     

Note: once you get to this step here, as you add autocomplete to text fields in Drupal 8, remember that you should be having data in “value” and “label” key-value, as well:

Next, you'll set up a new JsonResponse object and pass $results, thus generating a return JsonResponse.

 

Summing Up

That's pretty much all the “hocus pocus” that you need to do to add autocomplete to text fields in Drupal 8. Now the proper data results should be generated.

Just reload your app's form page and run a quick test:

Try to create a brand new channel in your app and to add some of the already existing team members.

Does the text field have autocomplete functionality added to?

Share the article

Development

We do Web development

Go to our Web development page!

Visit page!

Do you want a website

or app developed?

 

Get a Free Quote

and let's make it work!

Get a Quote

Recommended Stories

DrupalTips
Top Drupal Debugging Techniques

Top Drupal Debugging Techniques

  Debugging is an essential part of developing any website, and Drupal is no exception. Debugging in Drupal can be a complex process due to the complexity of the system and its many components. However, with the right techniques, it is possible to identify and resolve issues quickly. In this article, we will discuss some of the top debugging techniques for Drupal that can help you troubleshoot your website more efficiently. We will cover topics such as using the Devel module, using Xdebug, and other helpful tips and tricks. With these techniques in hand, you'll be able to recognize and repair any problems on your Drupal site quickly.     Using the Devel Module for Debugging The Devel module is a powerful tool for debugging Drupal websites. It provides a suite of tools to help you quickly identify and resolve issues. The Devel module includes features such as the ability to view database queries, generate dummy content, and debug PHP code. It also has an API that allows developers to create custom debugging tools. Using the Devel module can be helpful when trying to identify the source of an issue. It can also be used to generate dummy content for testing purposes.     Utilizing Xdebug for Troubleshooting Xdebug is a powerful debugging tool that can be used to troubleshoot issues on Drupal websites. It provides detailed information about the code execution, including stack traces and variable values. This can help developers quickly identify the source of an issue and resolve it more efficiently. Xdebug also has features such as breakpoints, which allow developers to pause the execution of code at certain points to inspect the application's state. This can be helpful when trying to identify and fix complex issues.     Leveraging Drupal's Logging System Drupal's logging system is a powerful tool for debugging websites. It provides detailed information about the events that occur on the website, including errors and warnings. This can be helpful when trying to identify the source of an issue. The logging system also allows developers to set up custom log levels, which can be used to filter out unnecessary information and focus on specific types of events. This can help developers quickly identify and resolve issues.   Using the Drupal Console for Debugging The Drupal Console is a command-line interface that can be used to debug Drupal websites. It provides commands for inspecting the database, generating dummy content, and running tests. This can be helpful when trying to identify and fix issues quickly. The Drupal Console also has an API that allows developers to create custom commands for debugging purposes.   Have You Completed Your Drupal 10 Migration? The release of Drupal 10 marks a major milestone for the platform, and it is important to ensure that your website is up-to-date with the latest version. Migrating to Drupal 10 can be a complex process, but it is essential for ensuring that your website remains secure and performs optimally. When migrating to Drupal 10, it is important to test the website thoroughly and use debugging techniques to identify and resolve any issues. The Devel module, Xdebug, and Drupal's logging system can all be used to troubleshoot any problems that may arise during the migration process. Don't forget to ensure that all of the modules and themes used on the website are compatible with Drupal 10. It is recommended to use the Update Status module to check for any available updates and apply them before migrating to Drupal 10. Additionally, it is a good idea to create a backup of your website before beginning the migration process in case something goes wrong. By taking these steps, you can ensure that your website is properly migrated and running smoothly on Drupal 10.     Conclusion Debugging in Drupal can be a complex process, but with the right techniques, it is possible to debug your website faster and easier. If you need more advice on your next web development project or on your Drupal 10 migration, our team of experts is here to help you. Contact us for more details.   Photo credit: Unpslash.... Read more
Raluca Olariu / Jan 16'2023
DrupalTips
Troubleshoot Your Website in 8 Easy Steps

Troubleshoot Your Website in 8 Easy Steps

  Having a website that runs smoothly is essential for any business. Unfortunately, website issues can arise from time to time and can be difficult to troubleshoot. The good news is that there are some simple steps you can take to identify and resolve common website problems. In this article, we'll discuss eight easy steps you can take to troubleshoot your website quickly and efficiently. With these tips, you'll be able to get your website back up and running in no time. 1. Check Your Server Status. The first step in troubleshooting your website is to check the status of your server. If your server is down or experiencing issues, it could be the cause of any problems you're having with your website. You can check the status of your server by accessing the control panel for your hosting provider. This will give you an overview of any issues that may be affecting your server and allow you to take the necessary steps to resolve them. 2. Review Your Website Logs. After checking your server status, your next step is to review your website logs. Logs are a great way to identify any errors or issues that may be occurring on your website. Reviewing the log files lets you pinpoint the exact source of the problem and take steps to resolve it quickly. Logs can also provide valuable insights into how visitors interact with your website, which can help you optimize your website for better performance. 3. Test Your Website Performance. The third step in troubleshooting your website is to test its performance. This can be done by using a tool such as Google PageSpeed Insights or WebPageTest. These tools will analyze your website and provide you with detailed information about its loading speed, page size, and other performance metrics. This will allow you to identify any areas of improvement that could help improve the overall performance of your website. 4. Inspect Your Code for Errors. If you've tested your website performance, your next step is to inspect your code for errors. This can be done by using a tool such as Firebug or Chrome DevTools. These tools will allow you to view your website's HTML, CSS, and JavaScript code and identify any errors that may be causing issues. Once you have identified the errors, you can take steps to fix them and ensure that your website is running smoothly. 5. Check for Broken Links. The fifth step in troubleshooting your website is to check for broken links. Broken links can cause a variety of issues, such as slow loading times and poor user experience. Various tools can help you identify any broken links on your website, such as Screaming Frog or Xenu Link Sleuth. Once you have identified the broken links, you can take steps to fix them and ensure that your website is running smoothly on all platforms, including mobile devices. 6. Ensure You Have the Latest Updates Installed. Ensuring that you have the latest updates installed is imperative if you want a highly performant website. Outdated software can cause a variety of issues, such as security vulnerabilities and compatibility problems. It's important to keep your website up-to-date with the latest versions of any software or plugins you may be using. You can check for updates by accessing the control panel for your hosting provider or by using a tool such as WP Updates Notifier. 7. Analyze Traffic Patterns to Identify Issues. You should also analyze traffic patterns to identify any issues that may be causing your website to perform poorly. Analyzing traffic patterns can help you identify any areas of your website that may be causing problems, such as slow loading times or high bounce rates. You can use tools such as Google Analytics or Hotjar to track and analyze user behavior on your website. This will allow you to identify any potential issues and take steps to resolve them. 8. Monitor Your Website Regularly. Finally, remember to monitor your website regularly, as it will allow you to identify any potential issues before they become serious problems. You can use tools such as Uptime Robot or Pingdom to monitor your website's uptime and performance. In this way, you can ensure that your website is running smoothly and that any potential issues are identified quickly so that they can be addressed promptly.   Drupal 10 for High Website Performance Drupal 10, launched last month, is the latest version of one of the most powerful content management systems that can help you achieve high website performance. Drupal 10 offers a range of features designed to improve the speed and efficiency of your website, such as caching, minification, and optimization.  Among the best features we can find: Symfony 6 compatibility. Site owners and module developers will benefit from as much Symfony 6 compatibility as possible, and Symfony 4 deprecations in Drupal 9 for Symfony 5 will be resolved. Supported solutions for rebuilding jQuery UI functionality by using either vanilla JavaScript or frameworks like React. jQuery UI components used by Drupal core will be removed. Best practices for deprecating modules. Users will be able to use a proper mechanism for naming, versioning, deprecating wrappers, etc. A 'lifecycle' - property can be used in info.yml files for themes and modules. Better decoupled developer and site builder experiences, especially for menu and URL handling. Introduction of CKEditor 5 with better authoring experience and more modern editing (replacing CKEditor 4). PHP 8.1 compatibility for Drupal 9 and Drupal 10. Theme Starterkit tools for bespoke theme creation. You can learn more about how Drupal 10 can take your website to the next level in this article. Drupal 10 Migration If you're considering migrating to Drupal 10, we can help. Optasy's team of highly skilled developers can help you migrate your website to Drupal 10 quickly and efficiently. We can also provide ongoing support and maintenance for your website, ensuring it runs smoothly and optimally. Contact us today to learn more about our Drupal 10 migration services.   Photo credit: Pixabay.... Read more
Raluca Olariu / Jan 11'2023
DrupalNews
Why You Should Choose Drupal 10 in 2023

Why You Should Choose Drupal 10 in 2023

  As technology continues to evolve, it is important for businesses to stay ahead of the curve and choose the right platform for their website. Drupal 10 was released in December 2022, and it promises to be a powerful and reliable content management system (CMS). With its advanced features, scalability, security, and flexibility, Drupal 10 is an ideal choice for businesses looking to build a modern website. In this article, we will discuss why you should choose Drupal 10 for your next web development project. Advanced Features of Drupal 10 Drupal 10 comes with a range of advanced features that make it an ideal choice for businesses looking to build a modern website. These features include: Automatic Updates: Drupal 10 offers automatic updates, so you can keep your website up-to-date without having to manually update the software. This ensures that your website is always running the latest version of Drupal and is secure from any potential security threats. Responsive Design: Drupal 10 comes with a responsive design that ensures your website looks great on any device, from desktop computers to mobile phones. This makes it easier for users to access your website from any device and helps to improve user experience. Accessibility: Drupal 10 is designed with accessibility in mind, making it easier for people with disabilities to access your website. This helps to ensure that your website is accessible to everyone, regardless of their abilities. Multilingual Support: Drupal 10 supports multiple languages, so you can easily create a multilingual website that caters to a global audience. This makes it easier for businesses to reach out to a wider range of customers and expand their customer base. SEO Optimization: Drupal 10 comes with built-in SEO optimization tools that help to improve your website’s visibility in search engine results. This makes it easier for customers to find your website and helps to increase traffic and conversions.   Scalability and Flexibility  Drupal 10 is highly scalable and flexible, making it easy to customize your website to meet your specific needs. You can easily add new features and functionality to your website without having to start from scratch. This makes it easier for businesses to keep up with changing customer demands and stay ahead of the competition. Additionally, Drupal 10 is built on a modular architecture that allows you to easily add and remove modules as needed. This makes it easy to customize your website and keep it up-to-date with the latest features.   Security Benefits Drupal 10 is built with security in mind, making it one of the most secure content management systems available. It comes with a range of security features that help to protect your website from potential threats, such as SQL injection attacks and cross-site scripting. Additionally, Drupal 10 is regularly updated with the latest security patches to ensure that your website is always secure.   Cost-Effectiveness Cost-effectiveness is another major benefit of choosing Drupal 10 for your next web development project. Drupal 10 is an open source platform, meaning that it is free to use and customize. This makes it a cost-effective solution for businesses looking to build a website without breaking the bank. Additionally, Drupal 10 comes with a range of features and functionality that can help you save time and money when building your website.   Why Choose Drupal 10 in 2023? Selecting Drupal 10 in 2023 is a great choice for businesses looking to build a website that is secure, reliable, and cost-effective. Drupal 10 offers automatic updates, responsive design, multilingual support, SEO optimization, scalability and flexibility, and security benefits.  Migrate to Drupal 10 If you’re currently using an older version of Drupal, you can easily migrate to Drupal 10. The migration process is straightforward and can be completed quickly with the help of a professional web development team like Optasy. This will ensure that your website is up-to-date and secure, so you can continue to provide customers with the best possible experience. Contact us for more information about your migration process. Learn more about Drupal 10 by reading this blog post.   Photo credit: Unsplash.... Read more
Raluca Olariu / Jan 05'2023

Browse cities

×

Toronto

WordPress Development Services in Toronto
iOS App Development Services in Toronto
Drupal Development Services in Toronto
Magento Development Services in Toronto
Laravel Development Services in Toronto

Montreal

WordPress Development Services in Montreal
iOS App Development Services in Montreal
Laravel Development Services in Montreal
Drupal Development Services in Montreal
Magento Development Services in Montreal

Vancouver

Magento Development Services in Vancouver
iOS App Development Services in Vancouver
Drupal Development Services in Vancouver
WordPress Development Services in Vancouver
Laravel Development Services in Vancouver

New York

WordPress Development Services in New York
Laravel Development Services in New York
iOS App Development Services in New York
Drupal Development Services in New York
Magento Development Services in New York

Need a new Project?

Dare us to shape and boost your idea(s)!

Start a Project

(416) 243-2431

Contact

(416) 243-2431

contact@optasy.com

Toronto Downtown

First Canadian Place,
100 King St. W. Suite 5700, Toronto

Toronto West

2275 Upper Middle
Rd. E, Suite 101
Toronto

New York

1177 Avenue of the
Americas, 5th Floor,
New York

Newsletter

Get the latest OPTASY news, tips and how-to’s on the go, right in your inbox!
OPTASY
clutch
Pantheon Premier Partner
  • Drupal 8
  • Services
  • Contact Us
  • Partners

  • Drupal
  • Google
  • Magento
  • Shopify
  • Wordpress
Facebook
Twitter
LinkedIn
Drupal
  • Cities
  • Support

© 2023 All Rights Reserved. Built with Drupal