github.com/searKing/golang/tools/go-validator

go-validator

Generates Go code using a package as a generic template that implements validator.

go-validator Generates Go code using a package as a generic template that implements validator. Given the StructName of a Struct type T go-validator will create a new self-contained Go source file and rewrite T's "db" tag of struct field

The file is created in the same package and directory as the package that defines T. It has helpful defaults designed for use with go generate.

For example, given this snippet,

running this command

package painkiller

import (
	"database/sql"
	"time"
)

type Pill struct {
	Id        uint      `db:"id" json:"sql_data_id,omitempty"`
	CreatedAt time.Time `db:"created_at" json:"sql_data_created_at,omitempty"`
	UpdatedAt time.Time `db:"updated_at" json:"sql_data_updated_at,omitempty"`

	IsDeleted bool         `json:"sql_data_is_deleted,omitempty" db:"is_deleted"`
	DeletedAt sql.NullTime `db:"deleted_at" json:"sql_data_deleted_at,omitempty"`

	Version uint `db:"version" json:"sql_data_version,omitempty"`
} // sql_data

running this command

go-validator -type=Pill

in the same directory will create the file pill_validator.go, in package painkiller, containing a definition of

func (m *Pill) Validate(validate *validator.Validate) error

Typically this process would be run using go generate, like this:

//go:generate go-validator --all-type
//go:generate go-validator -type "Pill"
//go:generate go-validator -type "Pill" --linecomment
//go:generate go-validator -type "Pill" --linecomment --with-dao

If multiple constants have the same value, the lexically first matching name will be used (in the example, Acetaminophen will print as "Paracetamol").

With no arguments, it processes the package in the current directory. Otherwise, the arguments must name a single directory holding a Go package or a set of Go source files that represent a single Go package.

The -type flag accepts a comma-separated list of types so a single run can generate methods for multiple types. The default output file is t_validator.go, where t is the lower-cased name of the first type listed. It can be overridden with the -output flag.

Download/Install

The easiest way to install is to run go get install github.com/searKing/golang/tools/go-validator . You can also manually git clone the repository to $GOPATH/src/github.com/searKing/golang/tools/go-validator.

Inspiring projects

• stringer