Simple Custom Data API

[shalawfatah]

As of now, we can create data nodes through sourceNode and createNode, but the process is too complicated. It would be nice if we had a simple hook to create custom data, or add a node to our already exisiting data nodes (image field for posts, etc). This is especially helpful for CMSs. One usecase I can think of is sometimes custom post types in Wordpress return image ID, instead of URL, which is not usable for Gatsby image optimization. If we had such a hook, we could easily create an image field out of the image ID, and merge it back into the parent node, so we can statically generate and optimize it.

[LekoArts]

It would be nice if we had a simple hook to create custom data, or add a node to our already exisiting data nodes (image field for posts, etc)

This already exists: https://www.gatsbyjs.com/docs/reference/config-files/actions/#createNodeField

https://www.gatsbyjs.com/docs/how-to/plugins-and-themes/creating-a-source-plugin/#optimize-remote-images also shows how it's used to attach images to nodes.