Adding default template for content type with block(having schemaEnhancer) throwing error.

[iFlameing]

If you have a schema enhancer for a particular block and then you try to add this block in the layout options of content type will throw error.

Steps to reproduce the error.

1. Create a schemaEnhancer for a particular block
2. Go to any content type and dexterity content layout and select this block.

You will get error.

[davisagli]

@iFlameing Your report here is really vague.

Specifically we saw this when trying to add an image block to a layout in a project where the image block has a schema enhancer that tries to adjust the align property, which is part of the default image schema. The error is TypeError: schema.properties.align is undefined on this line in the schema enhancer: schema.properties.align.default = 'wide';

I would expect that the align property should be there, so we need to find out why it is not.

Edited to add: The problem is that schema extenders are being applied to the block layout settings schema, in addition to the main block schema.

[tiberiuichim]

The problem is that schema extenders are being applied to the block layout settings schema, in addition to the main block schema.

CC @avoinea

[avoinea]

I would need a more details example of this in order to fully understand the issue and the relation with the DX Layout schema.

[davisagli]

@avoinea For example, we have a schema enhancer that adds "block width" and "background color" properties to a block. When editing the layout, the fields show up on both the Block and Settings tabs, because the schema enhancer is applied to both the block schema and the settings schema:

Even worse, if the schema enhancer makes assumptions about the schema it is enhancing (like making a change to an existing field), then trying to use the block while editing the block layout can result in an error.

#5159 fixes this by making sure that schema enhancers are not applied to the layout settings schema.