gfast/template/vm/go/dao_internal.template

// ==========================================================================
// GFast自动生成dao internal操作代码，无需手动修改，重新生成会自动覆盖.
// 生成日期：{{.table.CreateTime}}
// 生成路径: {{.table.PackageName}}/dao/internal/{{.table.TableName}}.go
// 生成人：{{.table.FunctionAuthor}}
// ==========================================================================
////
package internal


import (
    "context"
    "github.com/gogf/gf/database/gdb"
    "github.com/gogf/gf/frame/g"
)


// {{.table.ClassName}}Dao is the manager for logic model data accessing and custom defined data operations functions management.
type {{.table.ClassName}}Dao struct {
    Table   string         // Table is the underlying table name of the DAO.
    Group   string         // Group is the database configuration group name of current DAO.
    Columns {{.table.ClassName}}Columns // Columns is the short type for Columns, which contains all the column names of Table for convenient usage.
}


// {{.table.ClassName}}Columns defines and stores column names for table {{.table.TableName}}.
type {{.table.ClassName}}Columns struct {
    {{range $index, $column := .table.Columns}}
    {{$column.GoField}}  string  // {{$column.ColumnComment}}
    {{end}}
}

var {{.table.BusinessName | CaseCamelLower}}Columns = {{.table.ClassName}}Columns{
    {{range $index, $column := .table.Columns}}
    {{$column.GoField}}:  "{{$column.ColumnName}}",
    {{end}}
}

// New{{.table.ClassName}}Dao creates and returns a new DAO object for table data access.
func New{{.table.ClassName}}Dao() *{{.table.ClassName}}Dao {
	return &{{.table.ClassName}}Dao{
        Group:    "default",
        Table: "{{.table.TableName}}",
        Columns:{{.table.BusinessName | CaseCamelLower}}Columns,
	}
}


// DB retrieves and returns the underlying raw database management object of current DAO.
func (dao *{{.table.ClassName}}Dao) DB() gdb.DB {
	return g.DB(dao.Group)
}

// Ctx creates and returns the Model for current DAO, It automatically sets the context for current operation.
func (dao *{{.table.ClassName}}Dao) Ctx(ctx context.Context) *gdb.Model {
	return dao.DB().Model(dao.Table).Safe().Ctx(ctx)
}

// Transaction wraps the transaction logic using function f.
// It rollbacks the transaction and returns the error from function f if it returns non-nil error.
// It commits the transaction and returns nil if function f returns nil.
//
// Note that, you should not Commit or Rollback the transaction in function f
// as it is automatically handled by this function.
func (dao *{{.table.ClassName}}Dao) Transaction(ctx context.Context, f func(ctx context.Context, tx *gdb.TX) error) (err error) {
	return dao.Ctx(ctx).Transaction(ctx, f)
}