'Wagtail Admin: How to Add ReadOnlyBlocks to show snippets fields values in a StructBlock

I have a Snippet model(SampleSnippet) with fields field_a, field_b, and field_c. And I am using it in a StructBlock like:

class SampleBlock(blocks.StructBlock):
    service_snippet = SnippetChooserBlock(SampleSnippet)
    ...

Now I want to show some of the SampleSnippet fields(field_a and field_b) in SampleBlock after saving the SampleBlock for the first time(after saving the snippet) on the wagtail admin site. How can I achieve this? I looked around a lot but couldn't find a similar issue.

If it were a model/snippet, I could have used property with ReadOnlyPanel but in the case of a StructBlock, I am stuck and not getting any ideas. If anybody knows any way to achieve this, please help me out. Thanks in advance.

wagtailwagtail-snippet


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