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eab4f75212
This introduces an `ErrorMessage` newtype which wraps `Text` in a manner which is designed to be easy to construct, and difficult to deconstruct. It provides functionality similar to `Data.Text.Extended`, but designed _only_ for error messages. Error messages are constructed through `fromString`, concatenation, or the `toErrorValue` function, which is designed to be overridden for all meaningful domain types that might show up in an error message. Notably, there are not and should never be instances of `ToErrorValue` for `String`, `Text`, `Int`, etc. This is so that we correctly represent the value in a way that is specific to its type. For example, all `Name` values (from the _graphql-parser-hs_ library) are single-quoted now; no exceptions. I have mostly had to add `instance ToErrorValue` for various backend types (and also add newtypes where necessary). Some of these are not strictly necessary for this changeset, as I had bigger aspirations when I started. These aspirations have been tempered by trying and failing twice. As such, in this changeset, I have started by introducing this type to the `parseError` and `parseErrorWith` functions. In the future, I would like to extend this to the `QErr` record and the various `throwError` functions, but this is a much larger task and should probably be done in stages. For now, `toErrorMessage` and `fromErrorMessage` are provided for conversion to and from `Text`, but the intent is to stop exporting these once all error messages are converted to the new type. PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5018 GitOrigin-RevId: 84b37e238992e4312255a87ca44f41af65e2d89a
39 lines
826 B
YAML
39 lines
826 B
YAML
- description: Custom GraphQL query using search_posts function
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url: /v1/graphql
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status: 200
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response:
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data:
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search_posts:
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- title: post by hasura
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content: content for post
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query:
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query: |
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query {
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search_posts(
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args: {search: "hasura"}
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) {
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title
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content
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}
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}
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- description: ...and make sure this didn't somehow end up under the mutation root
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url: /v1/graphql
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status: 200
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response:
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errors:
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- extensions:
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path: $.selectionSet.search_posts
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code: validation-failed
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message: "field 'search_posts' not found in type: 'mutation_root'"
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query:
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query: |
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mutation {
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search_posts(
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args: {search: "hasura"}
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) {
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title
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content
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}
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}
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