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Swagger UI Field Formatter

This Drupal module provides a field formatter for File and Link type fields which renders the referenced file using Swagger UI if the file is a valid Swagger file. Supported file types are JSON (.json) and/or YAML (.yml or .yaml).

This module uses the Swagger UI JavaScript library.

For a full description of the module, visit the project page on drupal.org.

To submit bug reports and feature suggestions, or to track changes visit the module's GitHub repository.

Requirements

Please note that the minimum supported Swagger UI library version is currently 3.32.2 as at the time of this release that's the latest version which includes security fixes.

Module installation

Install the Swagger UI Field Formatter module as you would normally install a contributed Drupal module. Visit the official Installing Modules documentation for further information.

Swagger UI library installation

Manual installation

Download the appropriate Swagger UI library version, extract the archive and rename the folder to "swagger-ui". Place the renamed folder into the [DRUPAL ROOT]/libraries directory so its path will be [DRUPAL ROOT]/libraries/swagger-ui.

Installation via Composer

If you would like to install the Swagger UI library with Composer, you probably used the Project template for Drupal 8 projects to set up your project. To install JavaScript libraries, it's recommended to use the asset-packagist repository. So you will need to add the following to your composer.json file in the "repositories" section:

{
    "type": "composer",
    "url": "https://asset-packagist.org"
}

It's also needed to extend the "extra/installer-paths" section with:

"web/libraries/{$name}": [
    "type:drupal-library",
    "type:bower-asset",
    "type:npm-asset"
],
"web/libraries/swagger-ui": ["bower-asset/swagger-ui"],

And add a new "installer-types" section next to "extra/installer-paths":

"installer-types": ["bower-asset", "npm-asset"],

After this you can install the library with the following command:

composer require oomphinc/composer-installers-extender bower-asset/swagger-ui

The library will be downloaded into the [DRUPAL ROOT]/libraries directory.

Configuration

File fields

  1. In the Drupal administrative UI navigate to "Structure" > "Content types" > TYPE > "Manage fields" where TYPE is the content type to which you want to add the new field, such as a Basic page.
  2. Click on the "Add field" button to add a new field.
  3. Set the field type to "File" and enter a label name.
  4. Click "Save and continue".
  5. On the "Edit" tab, in the "Allowed file extensions" field enter the following: yaml,yml,json
  6. Click "Save settings".
  7. Click on the "Manage display" tab.
  8. Select "Swagger UI" in the "Format" drop-down for the new field and optionally configure the formatter settings.
  9. Click "Save".
  10. Add a new TYPE type content and upload a valid Swagger file.

Link fields

  1. In the Drupal administrative UI navigate to "Structure" > "Content types" > TYPE > "Manage fields" where TYPE is the content type to which you want to add the new field, such as a Basic page.
  2. Click on the "Add field" button to add a new field.
  3. Set the field type to "Link" and enter a label name.
  4. Click "Save and continue".
  5. On the "Edit" tab manage your field settings as you wish.
  6. Click "Save settings".
  7. Click on the "Manage display" tab.
  8. Select "Swagger UI" in the "Format" drop-down for the new field and optionally configure the formatter settings.
  9. Click "Save".
  10. Add a new TYPE type content and provide a valid Swagger file path.

When viewing the content page the uploaded or the referenced Swagger file will be rendered by Swagger UI.

Troubleshooting

If the content of the Swagger file does not render correctly try clearing the cache by navigating to "Configuration" > "Development" > "Performance" on the Drupal administrative UI and clicking on the "Clear all caches" button.

If clearing the cache doesn't help, it's also worth to check the Swagger UI library related entry on the "Reports" > "Status report" page to see whether the library got recognised correctly or there is any problem with it.