内容类型的条件字段drupal 8

Question

I am looking to hide/show some fields depending upon user selection on another field. So a user can select among four wheeler/two wheeler. If user selects four wheeler from a dropdown he is shown different set of fields and for two wheeler different set of fields . As there are many common fields I am looking to use same content type for both content type

What I have tried so far is

1. Theme_name_form_alter hook in theme_name.theme file
2. As well as hook_form_FORM_ID_alter

None seems to be working for me

Answer 1

Module conditional fields is still dev for Drupal 8 but should work:

https://www.drupal.org/project/conditional_fields

Answer 2

while Conditional Field module still is in development on Drupal 8 So Field Formatter Condition Module could be a good choice.

Simple conditions and actions

Hide source field when target field is empty. Hide source field when target field is not empty. Hide source field when the current user has specific roles. Hide source field on specific pages. Hide source field when target field contains a specific string. Hide source field when target field doesn't contain a specific string. Hide link field if title is empty. Hide date field if smaller/greater then today/custom date. Hide if content from author Hide if checkbox is checked (in current dev version)

Answer 3

And in case "Conditional fields" is not working for you maybe "Paragraphs" can jump in as replacement. It's stable at least.

https://www.drupal.org/project/paragraphs

Not exactly what you were asking for, but can do the job.