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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
56 lines
1.1 KiB
YAML
56 lines
1.1 KiB
YAML
- description: Passing null value for nullable type
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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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author: []
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query:
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variables:
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limit: null
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query: |
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query author($limit: Int) {
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author(limit: $limit) {
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id
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name
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}
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}
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- description: Passing null value for non-nullable type with default value
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url: /v1/graphql
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status: 200
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response:
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data:
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author: []
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query:
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variables:
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limit: null
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query: |
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query author($limit: Int! = 1) {
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author(limit: $limit) {
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id
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name
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}
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}
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- description: Passing null value for non nullable type
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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: $.selectionSet.update_author.args.where.id._eq
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code: validation-failed
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message: unexpected null value for type 'Int'
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query:
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variables:
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author_id: null
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query: |
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mutation update_author($author_id: Int!) {
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update_author(where: {id: {_eq: $author_id}}, _set: {name: ""}) {
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returning {
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id
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name
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}
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}
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}
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