Add config option to define base URLs for GraphQL view queries

[el-schneider]

Querying e.g. seo > view > head uses the root URL of the statamic application for generating canonical links, which often doesn't make sense for a headless app. The favicon on the other hand seems to be a relative URL, which also breaks on a headless setup. I think it would be nice if there could be config options for app_url or frontend_url and asset_url, although Statamic only seems to be using the corresponding ENV vars APP_URL and ASSET_URL for CLI tools.

[aerni]

I believe there was a reason I didn't add this feature. But I can't quite remember why. I will look into it.

[aerni]

I took a look at this and there are a couple of things going on.

I can add a baseUrl argument that allows you to override Statamic's APP_URL. This argument is already used by some of the computed fields like canonical and hreflang. It would allow changing the URL of the breadcrumbs, canonical, hreflang, and schema fields in the rendered view. It could be used like this:

query MyQuery {
  seoMeta(id: "home") {
    view {
      head(baseUrl: "https://foo.bar")
    }
  }
}

However, this won't have an effect on the URLs of asset fields like og_image and favicon. Those URLs are handled by Statamic's assets fieldtype and glide tag. You could change the URL of your asset container, which would work for the favicon. The social images, however, are using glide. And the URL of glide is coupled to the APP_URL and can't be changed.

To summarize, adding the baseUrl argument would get you half the way. Any thoughts?

[aerni]

As a side note, I actually already added a comment on the renderedViews type to only use it when Statamic's URLs work for you.