schemars

• Update to syn 3 in schemars_derive

• Update to syn 3 in schemars_derive

Fixed

• transform attributes are now applied after the schema is otherwise fully constructed. In particular, they're now applied after all other attributes are processed. (#505)

Fixed

• transform attributes are now applied after the schema is otherwise fully constructed. In particular, they're now applied after all other attributes are processed. (https://github.com/GREsau/schemars/issues/505)

🎅 Merry Christmas! 🎄

Added

• Add smol_str03 feature (#486)

Changed

• Schemas generated for HashMap/BTreeMap with enum keys are now more specific (#452)

Added

• Add smol_str03 feature (https://github.com/GREsau/schemars/pull/486)

Changed

• Schemas generated for HashMap/BTreeMap with enum keys are now more specific (https://github.com/GREsau/schemars/pull/452)

Added

• Public functions that have no side-effects are now marked with #[must_use] so that they report a lint warning when the returned value is unused, as this likely indicates a mistake.

Fixed

• Improve accuracy of schemas for flattened enums, in particular: unit variants of externally-tagged enums, and enums wrapped in Option<>. (#464 / #483)

Added

• Public functions that have no side-effects are now marked with #[must_use] so that they report a lint warning when the returned value is unused, as this likely indicates a mistake.

Fixed

• Improve accuracy of schemas for flattened enums, in particular: unit variants of externally-tagged enums, and enums wrapped in Option<>. (https://github.com/GREsau/schemars/issues/464 / https://github.com/GREsau/schemars/pull/483)

Fixed

• Fix schema.pointer_mut() to resolve URI fragment identifiers like #/$defs/foo, matching current behaviour of schema.pointer() (#478 / #479)

Fixed

• Fix schema.pointer_mut() to resolve URI fragment identifiers like #/$defs/foo, matching current behaviour of schema.pointer() (https://github.com/GREsau/schemars/issues/478 / https://github.com/GREsau/schemars/pull/479)

Fixed

• Fix JsonSchema impl on atomic types being ignored on non-nightly compilers due to a buggy cfg check (#453)
• Fix compatibility with minimal dependency versions, e.g. old(-ish) versions of syn (#450)
• Fix derive for empty tuple variants (#455)

Fixed

• Fix JsonSchema impl on atomic types being ignored on non-nightly compilers due to a buggy cfg check (https://github.com/GREsau/schemars/issues/453)
• Fix compatibility with minimal dependency versions, e.g. old(-ish) versions of syn (https://github.com/GREsau/schemars/issues/450)
• Fix derive for empty tuple variants (https://github.com/GREsau/schemars/issues/455)

Fixed

• Fix compile error when a doc comment is set on both a transparent (or newtype) struct and its field (#446)
• Fix json_schema!() macro compatibility when used from pre-2021 rust editions (#447)

Fixed

• Fix compile error when a doc comment is set on both a transparent (or newtype) struct and its field (https://github.com/GREsau/schemars/issues/446)
• Fix json_schema!() macro compatibility when used from pre-2021 rust editions (https://github.com/GREsau/schemars/pull/447)

Fixed

• Fix schema properties being incorrectly reordered during serialization (#444)

Fixed

• Fix schema properties being incorrectly reordered during serialization (https://github.com/GREsau/schemars/issues/444)

Fixed

• Deriving JsonSchema with no_std broken due to std::borrow::ToOwned trait not being in scope (#441)

Fixed

• Deriving JsonSchema with no_std broken due to std::borrow::ToOwned trait not being in scope (https://github.com/GREsau/schemars/issues/441)

This is a major release with many additions, fixes and changes since 0.8 (but not many since 0.9). While the basic usage (deriving JsonSchema and using schema_for!() or SchemaGenerator) is mostly unchanged, you may wish to consult the migration guide which covers some of the most significant changes.

Changes since 1.0.0-rc.2:

Added

• #[schemars(bound = ...)] attributes are now used from fields as well as containers
• The Schema::pointer(...) method now works when given a JSON pointer in URI Fragment representation with a leading # character. In particular, this means that you can now lookup a schema from a $ref value using that method.

Fixed

• Schema names that contain special characters are now correctly encoded when used inside a $ref value (#436)
• Optimise type param usage in SchemaGenerator::subschema_for, reducing LLVM line count and improving compile times (#439)

This is a major release with many additions, fixes and changes since 0.8 (but not many since 0.9). While the basic usage (deriving JsonSchema and using schema_for!() or SchemaGenerator) is mostly unchanged, you may wish to consult the migration guide which covers some of the most significant changes.

Changes since 1.0.0-rc.2:

Added

• #[schemars(bound = ...)] attributes are now used from fields as well as containers
• The Schema::pointer(...) method now works when given a JSON pointer in URI Fragment representation with a leading # character. In particular, this means that you can now lookup a schema from a $ref value using that method.

Fixed

• Schema names that contain special characters are now correctly encoded when used inside a $ref value (https://github.com/GREsau/schemars/pull/436)
• Optimise type param usage in SchemaGenerator::subschema_for, reducing LLVM line count and improving compile times (https://github.com/GREsau/schemars/pull/439)

Added

• Serde attributes that you want schemars to ignore can now be "unset" by including them in a schemars attribute with a ! prefix, e.g. #[schemars(!from)] (https://github.com/GREsau/schemars/issues/433 / https://github.com/GREsau/schemars/pull/434)

Removed

• ⚠️ Deprecated items have been removed:
  • SchemaSettings::option_nullable and SchemaSettings::option_add_null_type fields
  • gen module

Added

• Impl JsonSchema for chrono::TimeDelta (https://github.com/GREsau/schemars/issues/357)
• Support with/into/from/try_from container attributes (https://github.com/GREsau/schemars/issues/210 / https://github.com/GREsau/schemars/issues/267)

Changed

• Use oneOf when generating schema for serialized mixed-type sequences (https://github.com/GREsau/schemars/issues/348) - the previous behaviour was to always use true schema (i.e. any value) for mixed-type sequences

Added

• Type and const generic params can now be used in schema_with attributes, e.g. #[schemars(schema_with = "func::<T>")] (https://github.com/GREsau/schemars/pull/426 / https://github.com/GREsau/schemars/issues/375)

Changed

• Improve automatic trait bounds (https://github.com/GREsau/schemars/pull/422 / https://github.com/GREsau/schemars/issues/373)
  • Type params that are only used in skipped fields or PhantomData no longer have an unnecessary JsonSchema bound automatically added
  • Remove type params from default schema_name() whether or not they impl JsonSchema. Type params can still be included in the name by specifying them in a rename attribute.
• Recursive references to the root schema type now use "$ref": "#" instead of duplicating the entire schema within $defs/definitions (https://github.com/GREsau/schemars/pull/418 / https://github.com/GREsau/schemars/issues/175)
• Schemas for untagged enum variants no longer have the "title" set to the variant name (added in alpha.19) by default, but this behaviour is still available by setting the untagged_enum_variant_titles flag on SchemaSettings. (https://github.com/GREsau/schemars/pull/421 / https://github.com/GREsau/schemars/issues/420)

Added

• Add get_mut, pointer, pointer_mut methods for easier manipulation of Schemas (#416)
• Use patternProperties on map schemas where appropriate (#417)
  • ⚠️ BTreeMap<K,V>/HashMap<K,V> now only implement JsonSchema when both K and V implement JsonSchema

Fixed

• When a struct is transparent, don't ignore other attributes (#415)

Added

• Support #[serde(untagged)] on individual variants of enums (https://github.com/GREsau/schemars/issues/388 / https://github.com/GREsau/schemars/pull/412)
• Set "title" to variant name in schemas for untagged enums/variants (https://github.com/GREsau/schemars/issues/102 / https://github.com/GREsau/schemars/pull/413)

Changed

• When populating a schema's "description" from rust doc comments, trim a single leading space from the comment (https://github.com/GREsau/schemars/pull/407)
• Invalid with/serialize_with attributes will now fail compilation rather than being silently ignored (https://github.com/GREsau/schemars/pull/410)

Removed

• Remove the include_type_name setting for including "x-rust-type" property on generated schemas, since it didn't solve the original feature request. If you have a use-case for that behaviour, please raise an issue in GitHub.

Added

• #[schemars(inline)] attribute for inling schemas when deriving JsonSchema (https://github.com/GREsau/schemars/pull/380)
• Implement JsonSchema for jiff 0.2 types, under the optional jiff02 feature flag (https://github.com/GREsau/schemars/pull/364)
• Add methods to dyn GenTransform, allowing to to be used similarly to a dyn Any:
  • fn is<T>(&self) -> bool
  • fn downcast_ref<T>(&self) -> Option<&T>
  • fn downcast_mut<T>(&mut self) -> Option<&mut T>
  • fn downcast<T>(self: Box<Self>) -> Result<Box<T>, Box<Self>>
• Schemas for i8/i16/u8/u16 now include minimum and maximum properties (https://github.com/GREsau/schemars/issues/298)
• schemars::transform::RestrictFormats - a Transform that removes any format values that are not defined by the JSON Schema standard (or explicitly allowed by a custom list). This can be used to remove non-standard formats from schemas.
• SchemaSettings now has an include_type_name flag. When enabled, this includes an "x-rust-type" property on generated schemas, set to the name of the schema's associated rust type.

Changed

• Rename JsonSchema::always_inline_schema() to inline_schema(), because future attributes may allow particular fields to be uninlined
• MSRV is now 1.74
• GenTransform::as_any and GenTransform::as_any are deprecated and will be removed before schemars 1.0 becomes stable.
• The generation of nullable schemas (i.e. schemas for Option<T>) has been reworked, making them more accurate. The SchemaSettings::option_nullable and SchemaSettings::option_add_null_type fields are no longer used - instead, generated schemas always include the "null" type, but this can be changed to nullable by using the new AddNullable transform.
• Update OpenAPI 3.0 meta-schema to an active URL (https://github.com/GREsau/schemars/issues/394)
• Change SchemaSettings::meta_schema and SchemaSettings::definitions_path from String to Cow<'static, str>, making it easier to construct a SchemaSettings in a const context.
• The SchemaGenerator::take_definitions method now takes an apply_transforms flag, which when enabled, will apply the generator's current transforms to each of the schema values in the returned map.

f9bcfd8

Added

• #[schemars(inline)] attribute for inling schemas when deriving JsonSchema ( #380 )

• Implement JsonSchema for jiff 0.2 types, under the optional jiff02 feature flag ( #364 )

• Add methods to dyn GenTransform , allowing to to be used similarly to a dyn Any :

• fn is<T>(&self) -> bool

• fn downcast_ref<T>(&self) -> Option<&T>

• fn downcast_mut<T>(&mut self) -> Option<&mut T>

• fn downcast<T>(self: Box<Self>) -> Result<Box<T>, Box<Self>>

• Schemas for i8 / i16 / u8 / u16 now include minimum and maximum properties ( #298 )

• schemars::transform::RestrictFormats - a Transform that removes any format values that are not defined by the JSON Schema standard (or explicitly allowed by a custom list). This can be used to remove non-standard format s from schemas.

• SchemaSettings now has an include_type_name flag. When enabled, this includes an "x-rust-type" property on generated schemas, set to the name of the schema's associated rust type.

Changed

• Rename JsonSchema::always_inline_schema() to inline_schema() , because future attributes may allow particular fields to be uninlined

• MSRV is now 1.74

• GenTransform::as_any and GenTransform::as_any are deprecated and will be removed before schemars 1.0 becomes stable.

• The generation of nullable schemas (i.e. schemas for Option<T> ) has been reworked, making them more accurate. The SchemaSettings::option_nullable and SchemaSettings::option_add_null_type fields are no longer used - instead, generated schemas always include the "null" type, but this can be changed to nullable by using the new AddNullable transform.

• Update OpenAPI 3.0 meta-schema to an active URL ( #394 )

• Change SchemaSettings::meta_schema and SchemaSettings::definitions_path from String to Cow<'static, str> , making it easier to construct a SchemaSettings in a const context.

• The SchemaGenerator::take_definitions method now takes an apply_transforms flag, which when enabled, will apply the generator's current transforms to each of the schema values in the returned map.

Changed

• For newtype variants of internally-tagged enums, prefer referencing the inner type's schema via $ref instead of always inlining the schema (https://github.com/GREsau/schemars/pull/355) (this change was included in the release notes for 1.0.0-alpha.16, but was accidentally excluded from the published crate)

Removed (⚠️ breaking changes ⚠️)

• the enumset1/enumset optional dependency has been removed, as its JsonSchema impl did not actually match the default serialization format of EnumSet (https://github.com/GREsau/schemars/pull/339)

Changed (⚠️ breaking changes ⚠️)

• MSRV is now 1.70
• The example attribute value is now an arbitrary expression, rather than a string literal identifying a function to call. To avoid silent behaviour changes, the expression must not be a string literal where the value can be parsed as a function path - e.g. #[schemars(example = "foo")] is now a compile error, but #[schemars(example = foo())] is allowed (as is #[schemars(example = &"foo")] if you want the the literal string value "foo" to be the example).

Fixed

• The "deserialize" schema for bytes::Bytes/BytesMut now allows strings, matching the actual deserialize behaviour of the types.
• The schema for either::Either now matches the actual serialize/deserialize behaviour of that type.

Added

• SchemaSettings now has a contract field which determines whether the generated schemas describe how types are serialized or deserialized. By default, this is set to Deserialize, as this more closely matches the behaviour of previous versions - you can change this to Serialize to instead generate schemas describing the type's serialization behaviour (https://github.com/GREsau/schemars/issues/48 / https://github.com/GREsau/schemars/pull/335)

Changed

• Schemas generated for enums with no variants will now generate false (or equivalently {"not":{}}), instead of {"enum":[]}. This is so generated schemas no longer violate the JSON Schema spec's recommendation that a schema's enum array "SHOULD have at least one element".

Added

• Read #[garde(...)] attributes as an alternative to #[validate(...)] (https://github.com/GREsau/schemars/issues/233 / https://github.com/GREsau/schemars/pull/331). See the documentation for a full list of supported attributes.

Fixed

• Fix compile errors when using #[validate(regex(path = *expr))] attribute

Fixed

• Allow regex(path = ...) value to be a non-string expression (https://github.com/GREsau/schemars/issues/302 / https://github.com/GREsau/schemars/pull/328)
• Respect #[serde(rename_all_fields = ...)] attribute (https://github.com/GREsau/schemars/issues/273 / https://github.com/GREsau/schemars/pull/304)

Changed (⚠️ possibly-breaking changes ⚠️)

• Invalid attributes that were previously silently ignored (e.g. setting schema_with on structs) will now cause compile errors
• Validation attribute parsing has been altered to match the latest version of the validator crate:
  • Remove the phone attribute
  • Remove the required_nested attribute
  • regex and contains attributes must now be specified in list form #[validate(regex(path = ...))] rather than name/value form #[validate(regex = ...)]

Changed

• Values in #[doc = ...] and #[schemars(description = ..., title = ...)] attributes may now be any arbitrary expression rather than just string literals. (https://github.com/GREsau/schemars/issues/204 / https://github.com/GREsau/schemars/pull/327)
• ⚠️ MSRV is now 1.65 ⚠️

Fixed

• Fix some cases of unsatisfiable schemas generated when flattening enums (https://github.com/GREsau/schemars/pull/325 / https://github.com/GREsau/schemars/issues/164 / https://github.com/GREsau/schemars/issues/165)

Added

• Add rustdoc for derive(JsonSchema) macro (https://github.com/GREsau/schemars/issues/322 / https://github.com/GREsau/schemars/issues/322)

Changed

• Replace schemars::gen module with schemars::generate. This is because gen is a reserved keyword in rust 2024, so can only be used as r#gen. The schemars::gen module is still available for ease of upgrading, but is marked as deprecated and may be removed in the future 1.0.0 release. (https://github.com/GREsau/schemars/issues/306 / https://github.com/GREsau/schemars/pull/323)

Fixed

• Fix behaviour of flatten for schemas with additionalProperties
• Fix behaviour of flatten of multiple enums (https://github.com/GREsau/schemars/issues/165 / https://github.com/GREsau/schemars/pull/320)

Fixed

• Fixed a configuration error that caused rustdoc generation to fail on docs.rs

Added

• Schemars can now be used in no_std environments by disabling the new std feature flag (which is enabled by default). Schemars still requires an allocator to be available.

Fixed

• Reduce size of MIR output (and improve release-mode compile time) when deriving JsonSchema involving applying schema metadata
• Fix flattening of serde_json::Value
• Use absolute import for Result in derive output, ignoring any locally imported types called Result (https://github.com/GREsau/schemars/pull/307)

Added

• #[schemars(transform = some::transform)] for applying arbitrary modifications to generated schemas. some::transform must be an expression of type schemars::transform::Transform - note that this can be a function with the signature fn(&mut Schema) -> ().
• SchemaSettings and SchemaGenerator are both now Send

Changed (⚠️ breaking changes ⚠️)

• visit module and Visitor trait have been replace with transform and Transform respectively. Accordingly, these items have been renamed:
  • SchemaSettings::visitors -> SchemaSettings::transforms
  • SchemaSettings::with_visitor -> SchemaSettings::with_transform
  • SchemaGenerator::visitors_mut -> SchemaGenerator::transforms_mut
  • GenVisitor -> GenTransform
  • Visitor::visit_schema -> Transform::transform
  • visit::visit_schema -> transform::transform_subschemas
• GenTransform must also impl Send, but no longer needs to impl Debug
• Doc comments no longer have newlines collapsed when generating the description property (https://github.com/GREsau/schemars/pull/310)

Added

• #[schemars(extend("key" = value))] attribute which can be used to add properties (or replace existing properties) in a generated schema (https://github.com/GREsau/schemars/issues/50 / https://github.com/GREsau/schemars/pull/297)
  • Can be set on a struct, enum, or enum variant
  • Value can be any expression that results in a value implementing Serialize
  • Value can also be a JSON literal following the rules of serde_json::json!(value) macro, i.e. it can interpolate other values that implement Serialize

Added

• json_schema! macro for creating a custom Schema
• Implement JsonSchema for uuid 1.x types, under the optional uuid1 feature flag
• SchemaSettings::draft2020_12() to construct settings conforming to JSON Schema draft 2020-12

Changed (⚠️ breaking changes ⚠️)

• The Schema type is now defined as a thin wrapper around a serde_json::Value
• The default SchemaSettings (used by the schema_for!()/schema_for_value!() macros and SchemaGenerator::default()) now conform to JSON Schema draft 2020-12 instead of draft 7.
• Schemas generated using SchemaSettings::draft2019_09() (and draft2020_12() and default()) now use $defs instead of definitions. While using definitions is allowed by the spec, $defs is the preferred property for storing reusable schemas.
• JsonSchema::schema_name() now returns Cow<'static, str> instead of String
• JsonSchema::is_referenceable() has been removed, and replaced with the more clearly-named JsonSchema::always_inline_schema() (which should returns the opposite value to what is_referenceable returned!)
• The SchemaGenerator.definitions field is now a serde_json::Map<String, Value>
• Macros/functions that previously returned a RootSchema now return a Schema instead
• All optional dependencies are now suffixed by their version:
  • chrono is now chrono04
  • either is now either1
  • smallvec is now smallvec1
  • url is now url2
  • bytes is now bytes1
  • rust_decimal is now rust_decimal1
  • enumset is now enumset1
  • smol_str is now smol_str02
  • semver is now semver1
  • indexmap2, arrayvec07 and bigdecimal04 are unchanged

Removed (⚠️ breaking changes ⚠️)

• Removed deprecated SchemaGenerator methods make_extensible, schema_for_any and schema_for_none
• Removed the schema module
  • The Schema type is now accessible from the crate root (i.e. schemars::Schema instead of schemars::schema::Schema)
  • All other types that were in the module have been removed:
    • RootSchema
    • SchemaObject
    • Metadata
    • SubschemaValidation
    • NumberValidation
    • StringValidation
    • ArrayValidation
    • ObjectValidation
    • InstanceType
    • SingleOrVec
• Removed schemars::Set and schemars::Map type aliases
• Removed the impl_json_schema feature flag - JsonSchema is now always implemented on Schema
• Remove methods visit_schema_object and visit_root_schema from the Visitor trait (visit_schema is unchanged)
  • Visitors that previously defined visit_schema_object should instead define visit_schema and use an if let Some(obj) = schema.as_object_mut() or similar construct
• Old versions of optional dependencies have been removed - all of these have newer versions (shown in brackets) which are supported by schemars
  • indexmap (consider using indexmap2)
  • uuid08 (consider using uuid1)
  • arrayvec05 (consider using arrayvec07)
  • bigdecimal03 (consider using bigdecimal04)
• Remove the retain_examples field from SetSingleExample, which is now a unit struct

This version is identical to 1.0.0-alpha.18, but is available for those who are unable to unwilling to use a pre-release version.

Those upgrading from Schemars 0.8 may want to consult the migration guide, which also applies when migrating from 0.8 to 0.9.

Fixed:

• Fix compatibility with rust 2024 edition (https://github.com/GREsau/schemars/pull/378)

Fixed:

• Fix null default not being set on generated schemas (https://github.com/GREsau/schemars/issues/295 / https://github.com/GREsau/schemars/pull/296)

Fixed:

• Revert unintentional change in behaviour when combining default and required attributes (https://github.com/GREsau/schemars/issues/292)

Fixed:

• Regression that caused a compile error when deriving JsonSchema on an enum with no variants (https://github.com/GREsau/schemars/issues/287)

Fixed:

• Reduce size of MIR output (and improve release-mode compile time) when deriving JsonSchema on enums (https://github.com/GREsau/schemars/pull/266 / https://github.com/GREsau/schemars/pull/286)

Changed:

• Update to syn 2.0, which should improve compile times in many cases (https://github.com/GREsau/schemars/pull/281)

Fixed:

• Reduce size of MIR output (and improve release-mode compile time) when deriving JsonSchema

Added:

• Implement JsonSchema for BigDecimal from bigdecimal 0.4 (https://github.com/GREsau/schemars/pull/237)

Added:

• Add #[schemars(inner(...)] attribute to specify schema for array items (https://github.com/GREsau/schemars/pull/234)

Changed:

• New optional associated function on JsonSchema trait: schema_id(), which is similar to schema_name(), but does not have to be human-readable, and defaults to the type name including module path. This allows schemars to differentiate between types with the same name in different modules/crates (https://github.com/GREsau/schemars/issues/62 / https://github.com/GREsau/schemars/pull/247)

Fixed:

• Schemas for rust_decimal::Decimal and bigdecimal::BigDecimal now match how those types are serialized by default, i.e. as numeric strings (https://github.com/GREsau/schemars/pull/248)

Added:

• Implement JsonSchema for semver::Version (https://github.com/GREsau/schemars/pull/195 / https://github.com/GREsau/schemars/pull/238)
• Include const generics in generated schema names (https://github.com/GREsau/schemars/pull/179 / https://github.com/GREsau/schemars/pull/239)
• Implement JsonSchema for types from indexmap v2 (https://github.com/GREsau/schemars/pull/226 / https://github.com/GREsau/schemars/pull/240)
• Implement JsonSchema for serde_json::value::RawValue (https://github.com/GREsau/schemars/pull/183)

Changed:

• Minimum supported rust version is now 1.60.0

Added:

• Implement JsonSchema for smol_str::SmolStr (https://github.com/GREsau/schemars/pull/72)

Changed:

• Change serde_json dependency min version to 1.0.25 (was 1.0.0) (https://github.com/GREsau/schemars/pull/192)

Added:

• Replace auto-inferred trait bounds with bounds specified in #[schemars(bound = "...")] attribute

Changed:

• Derived JsonSchema now respects attributes on unit enum variants (https://github.com/GREsau/schemars/pull/152)
• Minimum supported rust version is now 1.45.0

• Undo "Support generic default values in default attributes (https://github.com/GREsau/schemars/pull/83)" as it inadvertently introduced a breaking change (https://github.com/GREsau/schemars/issues/144)

Added:

• Support generic default values in default attributes (https://github.com/GREsau/schemars/pull/83)
  • This inadvertently introduced a breaking change and was removed in 0.8.10
• Add missing MIT licence text for usage of code from regex_syntax crate (https://github.com/GREsau/schemars/pull/132)
• Support uuid v1 and arrayvec 0.7 via feature flags uuid1 and arrayvec07 (https://github.com/GREsau/schemars/pull/142)
  • This also adds uuid08 and arrayvec05 feature flags for the previously supported versions of these crates. The existing uuid and arrayvec flags are still supported for backward-compatibility, but they are deprecated.
  • Similarly, indexmap1 feature flag is added, and indexmap flag is deprecated.

Added:

• Implement JsonSchema for types from rust_decimal and bigdecimal crates (https://github.com/GREsau/schemars/pull/101)

Fixed:

• Fixes for internally tagged enums and flattening additional_properties (https://github.com/GREsau/schemars/pull/113)

Added:

• Implement JsonSchema for EnumSet (https://github.com/GREsau/schemars/pull/92)

Fixed:

• Do not cause compile error when using a default value that doesn't implement Serialize (https://github.com/GREsau/schemars/issues/115)

Changed:

• Use oneOf instead of anyOf for enums when possible (https://github.com/GREsau/schemars/issues/108)

Fixed:

• Allow fields with plain #[validate] attributes (https://github.com/GREsau/schemars/issues/109)

Added:

• #[schemars(schema_with = "...")] attribute can now be set on enum variants.
• Deriving JsonSchema will now take into account #[validate(...)] attributes, compatible with the validator crate (https://github.com/GREsau/schemars/pull/78)

Added:

• Support for #[schemars(crate = "...")] attribute to allow deriving JsonSchema when the schemars crate is aliased to a different name (https://github.com/GREsau/schemars/pull/55 / https://github.com/GREsau/schemars/pull/80)
• Implement JsonSchema for bytes::Bytes and bytes::BytesMut (https://github.com/GREsau/schemars/pull/68)

Fixed:

• Fix deriving JsonSchema on types defined inside macros (https://github.com/GREsau/schemars/issues/59 / https://github.com/GREsau/schemars/issues/66 / https://github.com/GREsau/schemars/pull/79)

Added:

• Enable generating a schema from any serializable value using schema_for_value!(...) macro or SchemaGenerator::root_schema_for_value()/SchemaGenerator::into_root_schema_for_value() methods (https://github.com/GREsau/schemars/pull/75)
• #[derive(JsonSchema_repr)] can be used on C-like enums for generating a serde_repr-compatible schema (https://github.com/GREsau/schemars/pull/76)
• Implement JsonSchema for url::Url (https://github.com/GREsau/schemars/pull/63)

Added:

• SchemaGenerator::definitions_mut() which returns a mutable reference to the generator's schema definitions
• Implement JsonSchema for slices

Changed:

• Minimum supported rust version is now 1.37.0
• Deriving JsonSchema on enums now sets additionalProperties to false on generated schemas wherever serde doesn't accept unknown properties. This includes non-unit variants of externally tagged enums, and struct-style variants of all enums that have the deny_unknown_fields attribute.
• Schemas for HashSet and BTreeSet now have uniqueItems set to true (https://github.com/GREsau/schemars/pull/64)

Fixed

• Fix use of #[serde(transparent)] in combination with #[schemars(with = ...)] (https://github.com/GREsau/schemars/pull/67)
• Fix clippy field_reassign_with_default warning in schemars_derive generated code in rust <1.51 (https://github.com/GREsau/schemars/pull/65)
• Prevent stack overflow when using inline_subschemas with recursive types

Added:

• visit::Visitor, a trait for updating a schema and all schemas it contains recursively. A SchemaSettings can now contain a list of visitors.
• into_object() method added to Schema as a shortcut for into::<SchemaObject>()
• Preserve order of schema properties under preserve_order feature flag (https://github.com/GREsau/schemars/issues/32)
• SchemaGenerator::take_definitions() which behaves similarly to the now-removed into_definitions() method but without consuming the generator
• SchemaGenerator::visitors_mut() which returns an iterator over a generator's settings's visitors
• SchemaSettings::inline_subschemas - enforces inlining of all subschemas instead of using references (https://github.com/GREsau/schemars/issues/44)

Removed (BREAKING CHANGES):

• SchemaSettings::bool_schemas - this has been superseded by the ReplaceBoolSchemas visitor
• SchemaSettings::allow_ref_siblings - this has been superseded by the RemoveRefSiblings visitor
• SchemaSettings no longer implements PartialEq
• SchemaGenerator::into_definitions() - this has been superseded by SchemaGenerator::take_definitions()

Changed:

• BREAKING CHANGE Minimum supported rust version is now 1.36.0

Fixed:

• BREAKING CHANGE unknown items in #[schemars(...)] attributes now cause a compilation error (https://github.com/GREsau/schemars/issues/18)

Deprecated:

• make_extensible, schema_for_any, and schema_for_none methods on SchemaGenerator