Theme development

Hi... I need a help with Drupal 8 templates, please.

I created a custom block, I can create a theme for the custom block (the instance), but I can't create a theme for the Custom Block TYPE (let's call it "the prototype").

I meant, is there a way to theming the different Custom Block Types?

And a "bonus question": Why in the Theme Debug I can see "block--block-content.html.twig" twice? Should I see one "block--block-content.html.twig" and one "block--CUSTOM-BLOCK-TYPE-content.html.twig"

I've been stuck on this all day and I need help.

I have a video node that has a relationship (node reference) with a playlist node.

There are multiple videos referencing that playlist and there are multiple playlists.

Now here is my issue...

Hello,

I have created a form with two fields in which one is a radio button field and another is a hidden field which has #prefix and #suffix to define a custom "DIV".

Based on the radio button selection I am able to append data to the custom "DIV" using ajax calls. In addition to that I also want the "DIV" to have its own default value predefined. How can I do that ?

Form code is as follows :

Hi everybody,

We are currently working on our first Drupal site ever. We are almost ready to go in production, but we are facing a small but annoying problem. It seems like the breadcrumb is cached and I don't know how to avoid this.

The problem:

If you browse between the pages from the left-navigation, the breadcrumb isn't changing anymore after the first click. But if you click on page the is a level deeper, then it changes again.

Hello,

I have been trying to add couple of fields dynamically in a custom form in Drupal 8 but din't have luck till now. Could anyone please help me out !

The following is the ways I have tried with no luck

Hi,

i have been looking for a way to remove image field attributes in drupal 8 site-wide. I tried using some preprocess functions in themename.theme file using below samples.