Sitecore 9.1 dynamic placeholder

Question

As part of the Sitecore upgrade from 8.2 to 9.1, I was upgrading dynamic placeholder keys as per Sitecore 9.1 format. For this, I have got below blog which was very helpful.

https://www.sitecorenutsbolts.net/2017/10/17/Sitecore-9-Upgrading-to-Dynamic-Placeholders

But in my case placeholder keys with underscore are not working so I have updated few keys and replaced underscore with hyphen and that worked for me. I have seen many other blogs too where people have mentioned "Underscore" in key format.

My question is what is the right format of Sitecore 9 dynamic placeholder key?? Should this have hyphen or underscore?

Answer 1

By default Sitecore 9 generate dynamic placeholder key in this format

{placeholder key}-{rendering unique suffix}-{unique suffix within rendering}

richtext-{3F6606D1-BA9C-40DD-8D17-704D0396683D}-10

placeholder key The static placeholder key is passed in.

rendering unique suffix The Unique Rendering ID of the component that contains the placeholder. This is auto-generated in Sitecore every time you insert a component or add it to the Presentation Details. Since the ID is unique is guarantees the uniqueness of the key across multiple renderings on a page.

unique suffix within rendering An index suffix to guarantee uniqueness within a rendering. Each occurrence of a dynamic placeholder is incremented by 1, starting at the seed value (default is 0)

So answer to your question is Sitecore 9 Dynamic Placeholder use hyphen instead of underscore