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How to render block content programmatically in Drupal?
The block body contains basic HTML tags like Hello World , and renders ok when not loaded programmatically. The rendered result prints the HTML tags: Also, if I place other blocks (with HTML) via UI in the content region of this page I get escaped HTML tags.
How can I programmatically display a block?
The nice thing is that you might want to render a block with specific configuration, the bad thing is that config ids can change by messing with the interface, so the code might end up not working after letting users use the block interface. Using drupal_render is not useful as Drupal already assume the render in D8 and this is deprecated.
Why are blocks not saved in content area?
When you create blocks using new operator, they are not saved in the database. Another problem is content area doesn’t accept such objects, because they don’t implement IContent intefrace (you need to get blocks from IContentRepository which creates proxies in runtime).
When to use icontent member on a block?
When you need to use IContent member on a block, cast it to IContent explicitly. When you create blocks using new operator, they are not saved in the database.
Is there a custom block library in Drupal 8?
I think the problem here is that Drupal 8 has both block definitions (a.k.a. plugins) and block instances. Both of which tend to be called blocks. What is listed in the custom block library is a block definition. This is like what is done when a block is created with code.
Which is an example of a block in Drupal?
An example could be the breadcrumb block. If you want to render these, you will need to use the block plugin manager.
The simplest way is to create a hidden region in your theme by adding a region line in the info file. Something like “Hidden Blocks”. Add your custom (or code based) blocks to this region in the block placement screen. I also tend to set the rules for where this can be displayed just to help keep these from being generated when not needed.