How to check if graphql query exists

[bogdancss]

Hey,

I've got a GraphQl query polling data from the WP api. The end point is allWordpressWpJobListing which works perfectly fine.

However, in the case that there are no job listings or that the ones that exist in WP are expired, the api endpoint does not return anything, which causes the following error:

GraphQLError: Cannot query field "allWordpressWp JobListing"

The query is being called in the gatsby-node file as well as in one of my pages.
My questions is how do I manage this - how can I check if the endpoint exists and if not, how to skip it?

Thanks

[pieh]

This is unfortunately known issue.

Two current workarounds are:

• keep dummy entry in your wordpress CMS (for example title "DO NOT DELETE" so your content team won't remove it) so Gatsby will always have some data that it can use to create "endpoint"
• in your gatsby-node programatically create nodes that will match signature of JobListing (same fields, same type that is used by gatsby-source-wordpress)

Both would need some property in that "dummy" data that would let you filter them out when you create pages / query for data in your page templates.

I will close it for now, as we have issue like this already ( for example #2212 ).

Here's some discussion about proper solution that could be implemented in the future in Gatsby - #3344