Content-Type MIME of the most common data formats.
const (
MIMEJSON = "application/json"
MIMEHTML = "text/html"
MIMEXML = "application/xml"
MIMEXML2 = "text/xml"
MIMEPlain = "text/plain"
MIMEPOSTForm = "application/x-www-form-urlencoded"
MIMEMultipartPOSTForm = "multipart/form-data"
MIMEPROTOBUF = "application/x-protobuf"
MIMEMSGPACK = "application/x-msgpack"
MIMEMSGPACK2 = "application/msgpack"
MIMEYAML = "application/x-yaml"
MIMETOML = "application/toml"
)
These implement the Binding interface and can be used to bind the data present in the request to struct instances.
var (
JSON = jsonBinding{}
XML = xmlBinding{}
Form = formBinding{}
Query = queryBinding{}
FormPost = formPostBinding{}
FormMultipart = formMultipartBinding{}
ProtoBuf = protobufBinding{}
MsgPack = msgpackBinding{}
YAML = yamlBinding{}
Uri = uriBinding{}
Header = headerBinding{}
TOML = tomlBinding{}
)
var (
// ErrConvertMapStringSlice can not convert to map[string][]string
ErrConvertMapStringSlice = errors.New("can not convert to map slices of strings")
// ErrConvertToMapString can not convert to map[string]string
ErrConvertToMapString = errors.New("can not convert to map of strings")
)
var (
// ErrMultiFileHeader multipart.FileHeader invalid
ErrMultiFileHeader = errors.New("unsupported field type for multipart.FileHeader")
// ErrMultiFileHeaderLenInvalid array for []*multipart.FileHeader len invalid
ErrMultiFileHeaderLenInvalid = errors.New("unsupported len of array for []*multipart.FileHeader")
)
EnableDecoderDisallowUnknownFields is used to call the DisallowUnknownFields method on the JSON Decoder instance. DisallowUnknownFields causes the Decoder to return an error when the destination is a struct and the input contains object keys which do not match any non-ignored, exported fields in the destination.
var EnableDecoderDisallowUnknownFields = false
EnableDecoderUseNumber is used to call the UseNumber method on the JSON Decoder instance. UseNumber causes the Decoder to unmarshal a number into an any as a Number instead of as a float64.
var EnableDecoderUseNumber = false
func MapFormWithTag(ptr any, form map[string][]string, tag string) error
Binding describes the interface which needs to be implemented for binding the data present in the request such as JSON request body, query parameters or the form POST.
type Binding interface {
Name() string
Bind(*http.Request, any) error
}
func Default(method, contentType string) Binding
Default returns the appropriate Binding instance based on the HTTP method and the content type.
BindingBody adds BindBody method to Binding. BindBody is similar with Bind, but it reads the body from supplied bytes instead of req.Body.
type BindingBody interface {
Binding
BindBody([]byte, any) error
}
BindingUri adds BindUri method to Binding. BindUri is similar with Bind, but it reads the Params.
type BindingUri interface {
Name() string
BindUri(map[string][]string, any) error
}
type SliceValidationError []error
func (err SliceValidationError) Error() string
Error concatenates all error elements in SliceValidationError into a single string separated by \n.
StructValidator is the minimal interface which needs to be implemented in order for it to be used as the validator engine for ensuring the correctness of the request. Gin provides a default implementation for this using https://github.com/go-playground/validator/tree/v10.6.1.
type StructValidator interface {
// ValidateStruct can receive any kind of type and it should never panic, even if the configuration is not right.
// If the received type is a slice|array, the validation should be performed travel on every element.
// If the received type is not a struct or slice|array, any validation should be skipped and nil must be returned.
// If the received type is a struct or pointer to a struct, the validation should be performed.
// If the struct is not valid or the validation itself fails, a descriptive error should be returned.
// Otherwise nil must be returned.
ValidateStruct(any) error
// Engine returns the underlying validator engine which powers the
// StructValidator implementation.
Engine() any
}
Validator is the default validator which implements the StructValidator interface. It uses https://github.com/go-playground/validator/tree/v10.6.1 under the hood.
var Validator StructValidator = &defaultValidator{}