CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is roughly based on Keep a Changelog.

This project adheres to Semantic Versioning.

Unreleased - xxxx-xx-xx

v3.7.2 - 2024-05-22

Changes

• Pulled in the latest cynic-parser, this should have no user facing impact.

v3.7.1 - 2024-05-14

Bug Fixes

• Schema file should no longer cause clippy warnings if clippy::nursery is on. (#951)

v3.7.0 - 2024-04-28

New Features

• Users of the reqwest integration can now control the type used for error extensions (#928)

Changes

• MSRV is now officially 1.72 (although it was unofficially 1.72 before)

v3.6.1 - 2024-04-15

Bug Fixes

• Fixed a regresion in 3.6.0: schemas with directives on the schema definition will now parse

3.6.0 - 2024-04-12

Bug Fixes

• Fixed an issue where derive(Scalar) would fail on types with a serialize function that was not serde::Serialize::serialize (#909)

Changes

• Improved errors when users use a derive on the wrong kind of GraphQL type (#889)
• cynic-codegen now uses cynic-parser instead of graphql-parser (#824)

v3.5.1 - 2024-04-04

Changes

• Operation is now Debug when Variables is Debug

v3.5.0 - 2024-03-25

Changes

• Updates reqwest to 0.12 - this is breaking for users of the http-reqwest or http-reqwest-blocking features who will need to upgrade to reqwest 0.12.
• Fixed some unused code warnings

v3.4.3 - 2024-01-22

Bug Fixes

• Handle disabled introspection better in cynic-introspection & cynic-cli. This is technically a breaking change, but it's small and fixes a bug so I'll allow it.

v3.4.2 - 2024-01-22

Changes

• If you accidentally write a recursive query without the recurse attribute you'll now get a panic suggesting to use recurse. This may cause false positives if you're writing a particularly large query - users should raise an issue if I've picked a number that's too low.

Bug Fixes

• The recurse attribute now works if an InlineFragments derive is used in the recursive path.

v3.4.1 - 2024-01-22

Bug Fixes

• Fixed an issue with object literals inside arguments

v3.4.0 - 2024-01-09

New Features

• Enums can now opt out of exhaustiveness checking with the non_exhaustive attribute

v3.3.3 - 2024-01-09

Bug Fixes

• cynic-introspection now omits the {} if a definition is empty.

v3.3.2 - 2024-01-08

Changes

• GraphQlResponse is now Clone provided its contents are also

v3.3.1 - 2024-01-05

Bug Fixes

• Fixed an issue where #[cynic(flatten)] would not work on scalar fields.

v3.3.0 - 2023-11-14

New Features

• The QueryVariables derive now supports skip_serializing_if
• cynic-cli has a new querygen command as an alternative to the web-based generator (Note: this is experimental and may be subject to change)

Changes

• Operations generated by cynic will now omit un-used variables
• The #[cynic(spread)] attribute now outputs an inline fragment in GraphQL

Fixes

• Using #[cynic(spread)] more than once no longer results in rust compile errors.
• The generator won't output an incorrect comma in between attributes in certain circumstances.
• The generator now uses the same re-casing as codegen - leading to less bugs.
• The generator will now rename more QueryFragment fields that require it.
• cynic-introspection now escapes deprecated strings that require it in SDL.

v3.2.2 - 2023-06-26

Bug Fixes

• Various SDL output fixes in cynic-introspection:
  • It no longer prints ? where it means !
  • It omits the schema definition if all the root operation types are using default names
  • Enum values no longer have empty lines between them
  • We no longer erronously print the Boolean scalar
  • Fields now have a hacky heuristic that decides when to wrap them
  • Unions also have a wrapping heuristic
  • Deprecation reasons will now correclty be wrapped in strings

v3.2.1 - 2023-06-26

Changes

• Building binaries with different GitHub action

v3.2.0 - 2023-06-25

New Features

• Added support for introspecting the specifiedByUrl field of scalars on servers supporting GraphQL 2021
• cynic-introspection can now output SDL
• Added CapabilitiesQuery to cynic-introspection, which can detect which version of the GraphQL specification a server supports.
• QueryFragment now allows users to specify features for parts of the query, allowing the same query to be used on servers with differing capabilities.
• Added cynic-cli, a CLI for cynic that can introspect remote servers.

v3.1.1 - 2023-06-22

Bug Fixes

• Fixed an issue where InlineFragments fallbacks would fail to decode if the data contained anything other than just the __typename.
• Inline fragment variants containing smart pointers should now decode correctly.

v3.1.0 - 2023-06-11

New Features

• Added an exhaustive attribute for InlineFragments on union types. If present this attribute will cause compile errors if the enum is missing a variant for any union member.

Bug Fixes

• The generator no longer outputs a broken #[cynic::schema] module.
• impl_scalar! and derive(Scalar) can now be used on built in scalars.
• GitHub schema registration is now slightly faster
• Fixed a bug where suggestions in errors were non-deterministic.
• Fixed the names of some features in docs.rs output.
• Added MSRV to Cargo.toml

v3.0.2 - 2023-06-07

Bug Fixes

• Fix Variable definition for Vec<T> in #[cynic::schema] output.

v3.0.1 - 2023-06-06

Bug Fixes

• Fixed some more corner cases in string literal escaping
• Schema registration no longer parses schemas twice when rkyv is enabled.
• Fixed input type validation to better support skipping Option wrapping

v3.0.0 - 2023-06-04

See the upgrade guide in the book for help upgrading.

Breaking Changes

• QueryBuilder, MutationBuidler & SubscriptionBuilder no longer have lifetimes.
• QueryFragment no longer has a lifetime.
• QueryVariables::Fields must now implement the QueryVariablesFields trait.
• The workings of derive(QueryVariables) has been changed quite significantly, but shouldn't affect anyone who is using the macro.
• The various cynic derives now expect the crate to be in scope under the name cynic. This hopefully shouldn't affect most users but may do so if you were doing something unusual.

New Features

• Added cynic-introspection for running an introspection query against a remote server.
• Added cynic-introspection::Schema which converts the introspection output into a friendlier format for working with.
• The derive macros now support structs that are generic on lifetimes and types.
• The derive macros now fields that are references.
• The derive macros now support fields that are references.
• Added cynic_codegen::register_schema, a mechanism for pre-registering schemas with cynic.
• Added a schema attribute macro to declare the schema module for pre-registered schemas.
• Added the rkyv feature flag which optimises the pre-registered schemas with the rkyv library. This makes cynic much more efficient when working with large schemas.
• The Enum derive now supports fallback variants
• Added Operation::new to allow Operation to be used in tests.

Changes

• Cynic now uses operationName when one is provided by the top-level QueryFragment
• QueryFragments now provide the name of the struct to use as operationName

Bug Fixes

• Fixed an issue deserializing recursive fields that hit their recurse depth.
• Response deserialization will no longer work on random blobs of JSON that aren't in GraphQLResponse format.

Deprecations

• cynic_codegen::output_schema_module is now deprecated in favour of register_schema.

Removed

• Removed the deprecated FragmentArguments derive.
• Removed the deprecated arugment_struct attribute.

v2.2.8 - 2023-03-01

Bug Fixes

• GraphQlErrorLocation & GraphQlErrorPathSegment are no longer accidentally private.

v2.2.7 - 2023-02-27

Bug Fixes

• You no longer have to specify the Extensions parameter on GraphQLError if you don't have any extensions.

v2.2.6 - 2023-02-16

Bug Fixes

• A QueryFragment used inside an InlineFragment can now have a __typename field.

v2.2.5 - 2023-02-16

Bug Fixes

• The macro generated code now compiles under -D rust-2018-idioms

v2.2.4 - 2023-01-18

Bug Fixes

• Fix an issue where you'd get extremely weird compiler errors if your QueryFragment had fields named key or map.

v2.2.3 - 2023-01-03

Bug Fixes

• The generator and derive macros are now aware of the implicit __typename that every object & interface type gets.
• Fixed support for support fields with one or more leading underscores in the derives. This would have been possible before but only by using a rename attribute.

v2.2.2 - 2022-12-28

Bug Fixes

• Fixed a compilation error when targeting wasm with the http-reqwest feature enabled.

v2.2.1 - 2022-11-16

Bug Fixes

• Exposed the StreamingOperation type which was accidentally not exported in the move to v2.0.

v2.2.0 - 2022-11-14

Changes

• The use_schema output has been re-organised to reduce the chances of clashes. This is technically a breaking change, but only if you're writing queries by hand rather than using the derives.

v2.1.0 - 2022-11-09

New Features

• InlineFragments derives for union types now allow a fallback that receives the __typename

Bug Fixes

• schema_for_derives no longer ignores QueryVariables structs.
• A slight improvement on the error spans if you refer to a missing variable in some QueryFragment arguments.

v2.0.1 - 2022-11-08

Bug Fixes

• Some of the derives weren't recasing GraphQL types/fields correctly, leading to weird errors.
• Scalars defined using impl_scalar! couldn't be used as variables. Now they can.

v2.0.0 - 2022-11-07

This release contains a lot of breaking changes.

See the upgrade guide for help

Breaking Changes

• Cynic no longer supports providing variables via the arg.X syntax. Instead you should provide variables similar to how you would do in a GraphQL query: #[arguments(someArg: $my_variable)], where my_variable is a field on your QueryVariables struct.
• Arguments should be provided with the casing of the GraphQL schema rather than snake_casing them.
• Cynic now derives serde::Serialize and serde::Deserialize where appropriate so you can no longer do this yourself on structs you are using with cynic.
• Decoding GraphQLResponses should now be done directly with serde using a decode_response function on the operation (unless you're using an http extension trait, which will deal with this for you).
• Operation has changed:
  • It no longer has a lifetime.
  • It is now generic over the arguments type.
• The http extension traits have had their signatures changed to accommodate the new signature of Operation. Their use should still be the same.
• An Enum can no longer be shared between schemas. If you were doing this, you should define two Enums and provide conversion functions between the two of them.
• InlineFragments now always require a fallback and no longer perform exhaustiveness checking.
• QueryBuilder, MutationBuilder and SubscriptionBuilder no longer have a ResponseData associated type.
• QueryBuilder::build, MutationBuilder::build and SubscriptionBuilder::build now take their argument by value not by reference.
• The surf, reqwest & reqwest-blocking features have been renamed to http-surf, http-reqwest & http-reqwest-blocking respectively.
• The http-reqwest feature no longer uses the native-tls feature. Users should enable one of the tls features of reqwest themselves.
• The surf-h1-client, surf-curl-client, surf-wasm-client, surf-middleware-logger & surf-encoding features have been removed. If users want to enable these features in surf they should do it in their own Cargo.toml.
• cynic no longer re-exports serde_json
• The GraphQlError & GraphQlResponse structs no longer contain a serde_json::Value for extensions. They now have generic parameters that you should provide if you care about error extensions.
• The output of the use_schema macro is no longer re-cased.
• The deprecated query_module attribute for the various derive/attribute macros has been removed - if you're using it you should update to schema_module which behaves the same.

Deprecations

• The FragmentArguments trait & derive has been renamed to QueryVariables
• The argument_struct attribute for QueryFragment and InlineFragments has been deprecated in favour of variables

Bug Fixes

• Fixed a case where the generator would output the incorrect casing for some occurrences of a custom scalar in the output (#346)
• Cynic should now support schemas which have 2 similarly named but differently cased scalars.
• Cynic should no longer fail to compile in the face of various non-breaking schema changes.
• #[cynic(flatten)] no longer allows you to omit a list type on output fields. Previously this would compile but probably fail to deserialize.
• Non-nullable arguments & input object fields with defaults are no longer considered required

Changes

• Cynic now supports a new syntax for arguments: #[arguments(someArg: {"someField": 1})]
• cynic no longer uses inflector to re-case things. Hopefully this won't cause any regressions, but if it does please raise an issue.
• InlineFragments now take their expected typenames from the QueryFragment inside their variants, rather than from the name of the variants themselves.
• Queries output by cynic may have more literals in the GraphQL query string than they had in previous versions of cynic. Though the end result should be the same.
• use_schema output can now live in a separate crate from queries, which should help with large schema support. (The exception is impl_scalar invocations which must live in the same crate as the schema)
• Cynic now allows fields to be Arc or Rc
• The generator no longer outputs input types that are provided in argument literals, as these are no longer used in the generated code.

v1.0.0 - 2021-12-09

Breaking Changes

• The CynicReqwestError enum (behind the reqwest & reqwest-blocking feature flags) has a new variant to handle non 2XX responses from servers.
• Removed the GraphQlResult & PossiblyParsedData types (which weren't being used)
• Removed the following deprecated things: query_dsl!, the query_module module attribute, the GraphQLError, GraphQLResponse, GraphQLErrorLocation & GraphQlErrorPathSegment type aliases.

New Features

• The InlineFragments derive now supports a rename attribute on variants

Changes

• The QueryFragment derive now supports fields with types that take generic parameters directly, e.g. DateTime<Utc> from chrono. Previously this would have required a type alias to hide the generic parameters from cynic.

Bug Fixes

• The various HTTP client integrations will now return HTTP error details and the full body on non 2XX responses that don't contain a valid GraphQL response. Previously they would have tried to decode the response as GraphQL and returned the error from that operation.

v0.15.1 - xxxx-xx-xx

New Features

New generator features, so I'm putting them out in a point release:

• Querygen now supports inline fragments on union types & interfaces.
• Querygen now supports subscriptions

Bug Fixes

• Querygen no longer duplicates variable names in generated ArgumentStructs when an argument is used twice in a query.
• Fixed support for Float scalars in the generator.
• Fixed support for fields named self, super etc. which can't be made into raw identifiers.

v0.15.0 - 2021-09-23

Breaking Changes

• Removed the no longer used chrono feature. It didn't enable any code so downstreams shouldn't really be broken by this (other than a possible Cargo.toml tweak)

New Features

• Cynic now supports GraphQL field aliases. These can be requested, but will also automatically be added to queries if any QueryFragment requests the same field twice.
• The generator also now supports field aliases.

Bug Fixes

• Fixed a case where the generator would not generate InputObjects that it should have been generating, if those InputObjects were arguments to a leaf field.

Changes

• Disabled the heavyweight feature of inflector, which should make it (and therefore cynic) a lighter dependency.

v0.14.1 - 2021-07-29

Bug Fixes

• InputObject now serializes fields in a stable order.

v0.14.0 - 2021-06-06

New Features

• You can now spread a QueryFragment into another QueryFragment with the #[cynic(spread)] field attribute.
• The QueryFragment derive now supports renaming fields.

Bug Fixes

• Underscore field names are now supported in schemas and for querying.
• Field names with leading underscores will no longer have those leading underscores removed.

v0.13.2 - 2021-05-16

This release is only of the cynic crate - other crates remain at 0.13.1

Bug Fixes

• This fixes a problem with JSON decoding that made it extremely inefficient (particularly on larger responses). In my benchmarking this improves decoding performance 10x.

v0.13.1 - 2021-04-26

Bug Fixes

• Fixes an issue where cynic would incorrectly case module certain names in the use_schema output

v0.13.0 - 2021-04-04

Breaking Changes

There are a number of breaking changes here, though they shouldn't require too much work for users to update. An example of an upgrade can be found here.

• The cynic::Scalar derive has some new requirements:
  • You should now derive (or otherwise implement) serde::Serialize for your Scalar types.
  • The derive now requires a schema_module parameter. The schema_for_derives macro will automatically insert this (if you're using it) but you may need to add use super::schema; to ensure it's in-scope.
  • The derive now has an optional graphql_type parameter. This is required if the name of your type and the name of the scalar in the schema differ.
• Scalars have been revamped:
  • The scalar trait now has a typelock. This means that a Scalar impl is now directly tied to the scalar definition in a given query_dsl.
  • As a result, cynic can no longer define generic Scalar impls for 3rd party types (such as chrono, url, uuid etc.). The impl_scalar macro has been provided to allow users to use these types (or any type that is serde::Serialize) in their queries.
  • Cynic no longer requires you to define Scalar types you are not using.
  • select functions generated for scalar fields in query_dsl now take a selection_set that decodes the scalar type. This gives some flexibility around scalar types.
  • query_dsl now defines markers for all the scalar types. As such you should not import any custom scalars into your query_dsl module.
• Required scalar arguments no longer have concrete types, so anything that relied on type inference (i.e. arg = "hello".into()) will no longer work. You should either call an explicit function, or rely on a InputType impl to do the conversion.
• The uuid, chrono, bson, and url features have been retired. If you were using these you should register them as Scalar with the impl_scalar! macro.
• SerializableArgument has been retired in favour of just using serde::Serialize.
• The return type of cynic::Enum::select now includes the TypeLock of the enum. This should only affect users that were implementing cynic::Enum directly. Users of the derive should be unaffected.
• IntoArgument has been removed in favour of the new InputType trait.
• cynic::SerializeError no longer exists.

New Features

• Support for building and decoding subscription queries.
• Alpha quality support for subscriptions over websockets with graphql-ws-client.

Deprecated

• GraphQLError, GraphQLResponse, & GraphQLResult have all been deprecated in favour of GraphQlError, GraphQlResponse, & GraphQlResult. The types are otherwise the same, just with different names.
• query_dsl! has been deprecated in favour of a similar macro named use_schema!
• It's now recommended that you name your query_dsl module schema instead.
• cynic_codegen::output_query_dsl is now named cynic_codegen::output_schema_module.
• The query_module attribute macro has been deprecated in favour of schema_for_derives
• The query_module parameter to the derives has been deprecated in favour of schema_module.

Bug Fixes

• Cynic will now fail to compile you when you use an incorrect enum type for a field in a QueryFragment.
• Field type mismatch errors in QueryFragments are now reported on the span of the field type.
• You no longer need to define Scalars you are not using
• If a server adds a new scalar it will no longer break cynic clients.
• Fixed a case where InputObject errors were being shown against the query_module attr of the module they were defined in.

Changes

• The graphql_type parameter for most of the derives is now optional. It defaults to the name of the struct/enum if not present.
• Cynic will no longer generate invalid QueryFragments if fields are not selected on a composite.
• Cynic will now error if a QueryFragment selects no fields.

v0.12.3 - 2021-04-01

Bug Fixes

• The cynic::Scalar derive output no longer contains a spurious ? that clippy warns about in Rust 1.51.

v0.12.2 - 2021-02-22

Bug Fixes

• Hopefully fixed the build of documentation for docs.rs

v0.12.1 - 2021-02-12

Bug Fixes

• chrono::NaiveTime now supports times without seconds (e.g. 10:30)
• Failures to parse chrono types now provide error messages that mention chrono: these were fairly hard to diagnose before.
• The generator no longer prints out an empty types module when there are no custom scalars.

v0.12.0 - 2021-02-08

Breaking Changes

• selection_set::inline_fragments now takes a backup selection set parameter for when we get an unexpected __typename.
• The InlineFragments derive now performs exhaustiveness checking and validates the provided variants.
• InlineFragments has a new required function fallback

New Features

• InlineFragments are now validated for exhaustiveness & correctness.
• InlineFragments now support a fallback variant for the case where users only care about some of the possibilities.
• QueryFragment can now be derived for interfaces
• chrono::NaiveTime is now supported as a Scalar when the chrono feature is active
• Cynic errors will now suggest possible fixes when you mis-spell or mis-name a type in your code.

Changes

• Updated reqwest dependency to 0.11

v0.11.1 - 2021-01-30

Bug Fixes

• Optional InputObject arguments can now be provided by reference. Previously this required a clone.
• The generator no longer panics if it can't find the root type of a schema.
• The generator no longer tries (and fails) to run queries when it has no URL to work with.
• Makes sure docs.rs builds documentation for the HTTP client code.

v0.11.0 - 2020-12-31

Breaking Changes

• QueryFragment::fragment now accepts a FragmentContext rather than arguments. This change was necessary to support recursive queries.
• It is no longer recommended to use QueryFragment::fragment directly - instead an Operation should be constructed with QueryBuilder::build or MutationBuilder::build. Note that these return an Operation so you no longer need to construct one manually.
• GraphQL fields with names that match rust keywords will no longer be postfixed with a _ - you should now use a raw identifier (or rename) for these fields.
• Derived Enums now default to rename_all = "SCREAMING_SNAKE_CASE" if not provided. To revert to the old behaviour you should explicitly provide "None"
• Derived InputObjects now default to rename_all = "camelCase" if not provided. To revert to the old behaviour you should explicitly provide rename_all = "None"
• Removed the kebab-case & SCREAMING-KEBAB-CASE rename_all rules - fairly sure kebab case is not valid in GraphQL so this shouldn't affect much.

New Features

• Cynic now supports recursive queries via the #[cynic(recurse="N")] attribute on fields that recurse.
• The generator now understands query fragments, spreads and inline fragment spreads. Inline fragments for interface/union types are not yet supported.
• Interfaces can be queried via #[derive(InlineFragments)] on an enum.
• Added support for using chrono::NaiveDate as scalars. The decode/encode functions will convert to/from dates in the ISO 8601 format, that is YYYY-MM-DD
• Added QueryBuilder & MutationBuilder traits for constructing Operations from QueryFragments.

Bug Fixes

• The generator (and therefore the generator tests) should now work when run on windows.
• Paths output as part of generator are now all raw strings, so should support windows path separators.
• The generator now correctly wraps literal ID parameters with cynic::Id::New
• Cynic derives (and cynic itself) no longer emit clippy warnings (on 1.48 at least)
• We now support raw identifiers in QueryFragment derives, useful for fields named type or similar.
• The generator now correctly renames InputObject fields & Enum variants if the default rename_all doesn't work for them.
• The InputObject derive no longer looks up scalars inside query_dsl (which required them to be pub used in query_dsl).
• The generator is now context aware with argument values, and does a better job of figuring out whether to clone or take by reference.

Changes

• The generator is now a lot more thorough, it:
  • Deduplicates generated types
  • Supports multiple queries, sharing structs between all the generated queries as appropriate.
  • Generates unique names for each struct it creates, even when faced with different structs targeting the same type.
  • Generates partial InputObjects when faced with literals with missing fields (previously it would generate all fields even when unused)
  • Correctly generates different argument structs if a single type with arguments is used in multiple queries. Though the correct IntoArgument impl is not yet generated.
• The generator now generates scalars with public fields
• The generator now derives Clone on scalars as certain positions they can appear in require cloning
• The generator now outputs correct Rust code when faced with queries that rely on list coercion.
• rename_all attribute is no longer case sensitive.
• Improved the docs for attributes in the book

v0.10.1 - 2020-11-04

Bug Fixes

• Implemented SerializableArgument for the various scalars in the integrations folder. This was preventing them actually being used as scalars in input contexts.

v0.10.0 - 2020-10-11

Breaking Changes

• QueryFragment::fragment and InlineFragment::fragments now accept their Argument parameters by reference.
• define_into_argument_for_scalar has been renamed to impl_into_argument_for_options
• There's no longer a blanket impl of SerializableArgument for any Scalar. SerializableArgument now needs to be implemented on each Scalar. There's a impl_serializable_argument_for_scalar macro that does this. The Scalar derive automatically calls this macro, so this is only a change if you have a custom Scalar
• The IntoArgument trait now has an Output associated type that is used for the return value of IntoArgument::into_argument
• The InputObject derive no longer complains if you omit optional fields. The old behaviour can be brought back by attaching a require_all_fields annotation to the InputObject.
• SerializeError now requires Send + Sync on it's boxed value.

New Features

• The bson feature, which allows to use ObjectId in schemas, added.
• The uuid feature, which allows to use Uuid in schemas, added.
• The url feature, which allows to use Url in schemas, added.
• InputObjects may now contain fields inside a Box. This allows for recursive InputObject types.
• The surf feature enables integration with the surf HTTP client, so users don't have to write it themselves.
• The reqwest & reqwest-blocking features, which add support for the reqwest HTTP client.
• Optional fields on an InputObject may now be annotated with skip_serializing_if="path", similar to serde. This allows users to omit fields from InputObjects under certain circumstances.
• All optional fields of the GraphQLError type are now modeled according to the spec, including the extensions field, which is expressed as an Option<serde_json::Value>.

Changes

• A SerializableArgument no longer needs to be 'static + Send.
• FragmentArguments & InputObjects no longer need to be Clone.

v0.9.0 - 2020-09-11

Breaking Changes

• InputObject no longer has a serialize method - this is now handled by a SerializableArgument impl instead, which is generated by the InputObject derive.
• Query has been renamed to Operation to make it clear it's used for both queries & mutations.
• Query::new is now Operation::query

New Features

• InputObjects can now be derived and will be generated by querygen.
• Querygen output is now tested more thoroughly - should be less changes required by users just to get it to compile.
• Cynic now supports running & generating code for mutations.

Removed Features

• Removed the optimised_query_modules feature from codegen, as it involved more code than it was worth to keep it around. Functionally this should make no difference, though it may change performance characteristics of compiling cynic code. Didn't seem to make a significant difference when I was using it though.

Bug Fixes

• Fixed a compile issue in the generated query_dsl for schemas with fields with > 1 required argument.
• Fixed an issue that required users to add serde_json to their dependencies. We now re-export it as cynic::serde_json and use that in our derive output.
• querygen now adds rename_all="SCREAMING_SNAKE_CASE" to Enums by default - the GQL convention is to have them in this format and querygen was already doing the transformation into the PascalCase rust usually uses so this should make things more likely to work by default.
• Removed fontawesome from the querygen HTML. Think I added this along with bulma but it's not being used, and adds 400kb to the payload.
• Fixed a bug where querygen would not snake case field names when generating QueryFragments.
• querygen will now take references to arguments rather than ownership (which didn't work for most non-enum types).
• Fixed an issue where querygen was adding ID literals as Strings in arguments, rather than IDs.

v0.8.0 - 2020-08-16

Breaking Changes

• Integer fields are now i32 rather than i64 inline with the GraphQL spec. If larger integers are required a custom scalar should be used.
• The cynic_arguments attribute for passing arguments to GraphQL fields is now named arguments

New Features

• querygen-web now incorporates graphiql & graphiql explorer, to make testing & building queries easier.
• querygen now supports bare selection sets, they're assumed to be queries. Quite easy to create these in GraphiQL/GraphqlExplorer, and they work for queries so seemed important.
• Arguments are now converted using the IntoArgument<T> trait - default conversions are provided for Option and reference types, so users don't always have to wrap Options in Some or explicitly clone their arguments.
• As a result of the above, cynic will no longer stop compiling when a schema changes a required argument to optional.

Bug Fixes

• Fixed an issue with cynic-querygen where it guessed the name for the root of a query and crashed out if it was wrong (which was often).
• Fixed an issue where querygen would fail if given a query with a hardcoded enum value (#33)
• Integers are now i32 rather than i64, inline with the GraphQL spec. If larger integers are required a custom scalar should be used.
• Querygen now puts argument_struct attrs on types that have arguments rather than just types that have children with arguments. (#37)
• Fixed an issue where querygen would use the name of the query as the graphql_type on the root struct of named queries.
• Fixed a bunch of broken links in the book.

v0.7.0 - 2020-06-23

Breaking Changes

• SerializableArguments are now required to be Send. Found this was required for using cynic in an async context. May revisit at some point to see if it's 100% required.

v0.6.0 - 2020-06-17

New Features

• cynic::Id now derives PartialEq, Hash & Eq
• Added cynic::Id::new function

Bug Fixes

• Using a query_module should no longer cause errors on an individual derive to be attributed to the query_module span - the error information should now be associated with the derive it originated from.
• Fixed some dead code warnings in the selection builders output by query DSL

v0.5.0 - 2020-06-14

Breaking Changes

• Query::body no longer exists, the Query itself is now directly serializable, and exposes the query type itself. Errors that were previously exposed by Query::body() will now be surfaced when serializing a Query.
• Argument::new has been updated to take a SerialiableArgument itself.
• Removed selection_set::Error.
• SerializableArgument::serialize & Scalar::encode now return Box<std::error::Error> errors rather than ()

Bug Fixes

• cynic-codegen will now build with the rustfmt feature disabled.
• Removed some unwraps that I lazily put in and forgot to remove.

v0.4.0 - 2020-06-12

Breaking Changes

• schema_path parameters are now relative to CARGO_MANIFIEST_DIR rather than the current working directory. This fixes an issue with cargo workspace projects where doc-tests would be relative to the sub-crate but cargo builds were relative to the workspace root. For projects not using workspaces this will probably make no difference
• The query_dsl has been reworked. Before each field with arguments had one or two structs: one for optional arguments & one for required arguments, and these were passed to the selector function before the selection set argument. Now each selector function takes the required arguments, and then returns a struct that follows the builder pattern to allow for optional arguments to be added. This fixes a few issues and is a bit more ergonomic.

Bug Fixes

• Fixed a bug where any type used as an optional argument needed to implement Default. This was fixed by the query_dsl rework.
• Fixed a bug where optional arguments that were enums or interfaces had to be provided or type inference problems occurred. This was also fixed by the query_dsl rework.

v0.3.0 - 2020-06-12

New Features

• Added chrono::DateTime scalar support behind a chrono feature flag.
• The cynic::selection_set module and all it's contents are now documented.
• QueryBody now exposes it's arguments & query fields for greater flexibility (and use in snapshot testing etc.)

Bug Fixes

• Generated query_dsl now disables unused import warnings where appropriate.
• Exposed Id::inner & Id::into_inner functions - these were meant to be public but were not
• Cleaned up a ton of compiler warnings - mostly unused imports and a few unused variables
• query_dsl adds allow(dead_code) annotations so we don't get tons of dead code warnings when we're not exercising an entire schema.
• query_dsl no longer creates mutable Vec for fields without arguments - this was leading to tons of "doesn't need to be mutable" warnings.
• ID fields are now correctly given the cynic::Id type in query_dsl - previously they were being forced to String.
• cynic::Id is now a cynic::Scalar
• Fixed an issue in derive(QueryFragment) where Enums inside lists would not be treated as Enums.
• DecodeError now implements std::error::Error

v0.2.0 - 2016-06-11

Breaking Changes

• The generated query_dsl no longer contains generated enums - users should provide their own enums and derive(cynic::Enum) on them. Cynic querygen can be used to help with this.
• The generated query_dsl no longer contains generated input objects - users should provide their own structs and impl cynic::InputObject on them. A derive for this should be coming in the future.

New Features

• Union types can be queried via #[derive(InlineFragments)] on an enum.
• Schemas that use interfaces are now supported, though interfaces are not yet queryable.
• #[derive(QueryFragment)] now explicitly checks for required/list type mismatches & other easy mistakes, and warns the user appropriately.
• Added an output_query_dsl function suitable for running inside build.rs
• Added a flatten option at the field level. When present this will flatten nested options & vectors into the provided type. Used to handle the common case in GQL where someone has defined an optional list of optionals. This is a pain in Rust, since the same thing can usually be represented by a non-optional list of non-optionals.
• Added a cynic-querygen for generating QueryFragment structs from a graphql schema & query. This currently has a WIP web interface and a WIP CLI, though neither of them are particularly user friendly at this point.
• Added a cynic::query_module attribute macro that can be applied to modules containing QueryFragments & InlineFragments. When this attribute is present the derive will be done for all QueryFragments & InlineFragments contained within. This allows users to omit some of the parameters these derives usually require, as the query_module attribute provides them and fills them in. These modules may be expanded in the future to provide more "intelligent" features.
• Added support for mapN up to N = 50, therefore adding support for GraphQL objects with up to 50 fields.
• Added new cynic::Enum derive that matches up a Rust enum with a GraphQL enum. cynic-querygen will automatically provide enums using this derive when a query includes an enum.
• Added SelectionSet::and_then for chaining decode operations on selection sets.
• Added cynic::Scalar derive for newtype structs so that users can easily define their own scalars. Also added support for this to cynic-querygen
• Added cynic::Id type to handle Ids in queries.
• Added cynic::InputObject trait to allow the query_dsl to handle InputObjects generically.

Changed

• Split the procedural macros out into their own cynic-proc-macros crate. cynic-codegen now exists as a re-usable library for programmatically doing the codegen.
• The IntoArguments trait is now named FromArguments and has had it's parameters switched up.
• Added a StarWars API example

Bug Fixes

• Now supports schemas that define their root query types. Before we just assumed there was a type called query.
• Fixed a few things that stop the examples in the documentation from compiling.
• Fixed all the tests
• We now use the correct case for non built-in scalar types
• Fixed an issue that prevented propagation of argument structs into inner QueryFragments

v0.1.2 - 2020-02-04

• No changes

v0.1.1 - 2020-02-04

• Some tweaks to the documentation.

v0.1.0 - 2020-02-03

• Initial release