Entity browser widget in custom config form
54356
8.4 - Use entity browser in a module block from in same way as I would in a custom block
58899
What setup code should go in Form Constructors versus Form Load event?
140366
How to create User Account Registration form with Webform?
96059
Adding HTML5 placeholder to all drupal forms
127456
How to configure programmatically a unique constraint on several fields of a custom entity?
158874
Custom entity datetime field in calendar
40311
Add a "autocomplete" field in a buildForm
96406
HTML select form with option to enter custom value
108444
Correct way to validate config entities?
31896
What approach for showing custom user fields on a node?
125323
How to create dynamic JSF form fields
89259
Cannot create custom config entity fails because ID is blank
69654
Drupal 7 field widget - allowed values list
120665
How can I retrieve data within my widget
119454
The form component needs to have a UIForm in its ancestry. Suggestion: enclose the necessary components within
86780
Is there an equivalent to $A.get("$Browser.formFactor") in LWC?
96830
Embed a File Chooser in a UserControl / Form