Chronoblog requires at least one post with a "cover" in frontmatter

[macintacos]

Sorry about that, posted this before I actually wanted to.

While editing the theme, I removed the last example post in the posts folder and got the following errors:

 ERROR #85922  GRAPHQL

There was an error in your GraphQL query:

Field "cover" must not have a selection since type "String" has no subfields.

This can happen if you e.g. accidentally added { } to the field "cover". If you didn't expect "cover" to be of type "String" make sure that your input source and/or plugin is correct.

File: node_modules/gatsby-theme-chronoblog/src/hooks/use-feed.js:61:19


 ERROR #85922  GRAPHQL

There was an error in your GraphQL query:

Field "cover" must not have a selection since type "String" has no subfields.

This can happen if you e.g. accidentally added { } to the field "cover". If you didn't expect "cover" to be of type "String" make sure that your input source and/or plugin is correct.

File: node_modules/gatsby-theme-chronoblog/src/templates/link.js:17:15


 ERROR #85922  GRAPHQL

There was an error in your GraphQL query:

Field "cover" must not have a selection since type "String" has no subfields.

This can happen if you e.g. accidentally added { } to the field "cover". If you didn't expect "cover" to be of type "String" make sure that your input source and/or plugin is correct.

File: node_modules/gatsby-theme-chronoblog/src/templates/note.js:16:15


 ERROR #85922  GRAPHQL

There was an error in your GraphQL query:

Field "cover" must not have a selection since type "String" has no subfields.

This can happen if you e.g. accidentally added { } to the field "cover". If you didn't expect "cover" to be of type "String" make sure that your input source and/or plugin is correct.

File: node_modules/gatsby-theme-chronoblog/src/templates/post.js:17:15

failed extract queries from components - 0.330s

Upon further inspection, it appears that you need at least one post with a cover image, otherwise you get that error. If you supply a post with a cover image, you don't get the error. Took me forever to figure it out, because the errors weren't exactly the most helpful thing in the world.

Is the cover field required in frontmatter? I had thought that it wasn't.

[ganevdev]

I think you are talking about this: https://github.com/Chronoblog/gatsby-theme-chronoblog#frontmatter-placeholder ?

[macintacos]

Nope; I left that file alone and got the error I provided above when I removed the cover from the last post's frontmatter. The frontmatter-placeholder index file still exists and has the cover field, but gatsby develop doesn't seem to care, and the site won't render until I add the cover field to at least one post.

[russmatney]

I experienced this yesterday while moving into this theme - I couldn't get the page building again until I'd provided an image at exactly the path specified by cover in a post. Things worked great after adding an image, but beforehand the errors seem to be that the gql query handler for cover gets a String instead of an object.

[ganevdev]

Here is a test starter where this error is reproduced: https://github.com/Chronoblog/gatsby-theme-chronoblog/tree/master/tests/profile-minimal

But I still don’t understand why this is happening.

Command to run:

yarn start:profile-minimal

[ganevdev]

Thanks to the investigation by @russmatney #36 (comment), we know that this problem does not have a “right” solution. But we can do something.

So, I tried to add a real image file to the frontmatter-placeholder: https://github.com/Chronoblog/gatsby-theme-chronoblog/tree/master/tests/profile-minimal/content/links/frontmatter-placeholder, and everything seemed to work. I will add an image file to all starters.

I don’t like this solution because it relies a lot on the frontmatter-placeholder - the user can accidentally delete this folder, and then a lot of things can go wrong.

I’m thinking about maybe creating a separate place for this file? Or maybe automatically generate it every time a site is generated?