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ZerGo0 avatar ZerGo0 commented on August 11, 2024

I was able to solve it myself. I have to add new models to the generic models interface, but I get a build error when I try to use a type that I haven't added yet.

Here is how I did it:

package database

import (
	"context"
	"database/sql"
	"shared/gen/DBNAME/model"
	"strings"
	"time"

	"github.com/go-jet/jet/v2/mysql"
	"go.uber.org/zap"
)

type models interface {
	model.ModelA | model.ModelB | model.ModelC
}

func GetFirst[M models](db *sql.DB,
	dbTable mysql.Table,
	selectColumns mysql.Projection,
	expression mysql.BoolExpression) (
	M, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
	defer cancel()

	stmt := dbTable.
		SELECT(selectColumns).
		FROM(dbTable)

	if expression != nil {
		stmt = stmt.WHERE(expression)
	}

	stmt = stmt.LIMIT(1)

	var obj M
	err := stmt.QueryContext(ctx, db, &obj)
	if err != nil {
		if err != sql.ErrNoRows && !strings.Contains(err.Error(), "no rows in result set") {
			zap.L().Error("Error querying database", zap.Error(err))
		}

		return obj, err
	}

	return obj, nil
}

from jet.

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