udeServer/internal/model/tkeymodel.go

package model

import (
	"context"
	"fmt"

	"github.com/zeromicro/go-zero/core/stores/sqlx"
)

var _ TKeyModel = (*customTKeyModel)(nil)

type (
	// TKeyModel is an interface to be customized, add more methods here,
	// and implement the added methods in customTKeyModel.
	TKeyModel interface {
		tKeyModel
		FindPage(ctx context.Context, page, pageSize int64) ([]TKey, int64, error)
		withSession(session sqlx.Session) TKeyModel
	}

	customTKeyModel struct {
		*defaultTKeyModel
	}
)

// NewTKeyModel returns a model for the database table.
func NewTKeyModel(conn sqlx.SqlConn) TKeyModel {
	return &customTKeyModel{
		defaultTKeyModel: newTKeyModel(conn),
	}
}

func (m *customTKeyModel) FindPage(ctx context.Context, page, pageSize int64) ([]TKey, int64, error) {
	var total int64
	if err := m.conn.QueryRowCtx(ctx, &total, fmt.Sprintf("select count(*) from %s", m.table)); err != nil {
		return nil, 0, err
	}

	if total == 0 {
		return nil, 0, nil
	}

	offset := (page - 1) * pageSize
	query := fmt.Sprintf("select %s from %s order by `id` limit ? offset ?", tKeyRows, m.table)
	var resp []TKey
	if err := m.conn.QueryRowsCtx(ctx, &resp, query, pageSize, offset); err != nil {
		return nil, 0, err
	}

	return resp, total, nil
}

func (m *customTKeyModel) withSession(session sqlx.Session) TKeyModel {
	return NewTKeyModel(sqlx.NewSqlConnFromSession(session))
}