Gen Tool

Gen Tool is a single binary without dependencies can be used to generate structs from database

Install

go install gorm.io/gen/tools/gentool@latest

Usage

gentool -h

Usage of gentool:
-db string
input mysql or postgres or sqlite or sqlserver. consult[https://gorm.io/docs/connecting_to_the_database.html] (default "mysql")
-dsn string
consult[https://gorm.io/docs/connecting_to_the_database.html]
-fieldNullable
generate with pointer when field is nullable
-fieldWithIndexTag
generate field with gorm index tag
-fieldWithTypeTag
generate field with gorm column type tag
-modelPkgName string
generated model code's package name
-outFile string
query code file name, default: gen.go
-outPath string
specify a directory for output (default "./dao/query")
-tables string
enter the required data table or leave it blank
-onlyModel
only generate models (without query file)
-withUnitTest
generate unit test for query code
-fieldSignable
detect integer field's unsigned type, adjust generated data type

c

Configuration file name, default value “”, command line options have higher priority than configuration file.

db

Specify dirver dialector, default value “mysql”, refer: https://gorm.io/docs/connecting_to_the_database.html

dsn

DSN that used to connect database, refer: https://gorm.io/docs/connecting_to_the_database.html

fieldNullable

Generate with pointer when field is nullable

fieldWithIndexTag

Generate field with gorm index tag

fieldWithTypeTag

Generate field with gorm column type tag

modelPkgName

Generated model code’s package name.

outFile

Genrated query code file name, default: gen.go

outPath

Specify a directory for output (default “./dao/query”)

tables

Specify tables want to genrated from, default all tables.

eg :

--tables="orders"       # generate from `orders`

--tables="orders,users" # generate from `orders` and `users`

--tables=""             # generate from all tables

Generate some tables code.

withUnitTest

Generate unit test, default value false, options: false / true

fieldSignable

Use signable datatype as field type, default value false, options: false / true

Example

gentool -dsn "user:pwd@tcp(localhost:3306)/database?charset=utf8mb4&parseTime=True&loc=Local" -tables "orders,doctor"

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