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Update README_CN.md

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Yale 2017-11-09 17:48:17 +08:00 committed by GitHub
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@ -691,7 +691,10 @@ import (
// MovieService主要包括对movie的CRUID（增删改查）操作。 // MovieService主要包括对movie的CRUID（增删改查）操作。
// MovieService主要调用movie 数据仓库的方法。 // MovieService主要调用movie 数据仓库的方法。
// // 下面例子的数据源是从更高级别的组件
// 这样可以用同样的逻辑可以返回不同的数据仓库
// MovieService是一个接口，任何实现的地方等能用，这样替换不同的业务逻辑可以用来测试
// MovieService handles some of the CRUID operations of the movie datamodel. // MovieService handles some of the CRUID operations of the movie datamodel.
// It depends on a movie repository for its actions. // It depends on a movie repository for its actions.
// It's here to decouple the data source from the higher level compoments. // It's here to decouple the data source from the higher level compoments.
@ -705,7 +708,7 @@ type MovieService interface {
UpdatePosterAndGenreByID(id int64, poster string, genre string) (datamodels.Movie, error) UpdatePosterAndGenreByID(id int64, poster string, genre string) (datamodels.Movie, error)
} }
// NewMovieService returns the default movie service. // NewMovieService 返回一个 movie 服务.
func NewMovieService(repo repositories.MovieRepository) MovieService { func NewMovieService(repo repositories.MovieRepository) MovieService {
return &movieService{ return &movieService{
repo: repo, repo: repo,
@ -716,21 +719,22 @@ type movieService struct {
repo repositories.MovieRepository repo repositories.MovieRepository
} }
// GetAll returns all movies. // GetAll 返回所有 movies.
func (s *movieService) GetAll() []datamodels.Movie { func (s *movieService) GetAll() []datamodels.Movie {
return s.repo.SelectMany(func(_ datamodels.Movie) bool { return s.repo.SelectMany(func(_ datamodels.Movie) bool {
return true return true
}, -1) }, -1)
} }
// GetByID returns a movie based on its id. // GetByID 是通过id找到movie.
func (s *movieService) GetByID(id int64) (datamodels.Movie, bool) { func (s *movieService) GetByID(id int64) (datamodels.Movie, bool) {
return s.repo.Select(func(m datamodels.Movie) bool { return s.repo.Select(func(m datamodels.Movie) bool {
return m.ID == id return m.ID == id
}) })
} }
// UpdatePosterAndGenreByID updates a movie's poster and genre.
// UpdatePosterAndGenreByID 更新一个 movie的 poster 和 genre.
func (s *movieService) UpdatePosterAndGenreByID(id int64, poster string, genre string) (datamodels.Movie, error) { func (s *movieService) UpdatePosterAndGenreByID(id int64, poster string, genre string) (datamodels.Movie, error) {
// update the movie and return it. // update the movie and return it.
return s.repo.InsertOrUpdate(datamodels.Movie{ return s.repo.InsertOrUpdate(datamodels.Movie{
@ -740,9 +744,9 @@ func (s *movieService) UpdatePosterAndGenreByID(id int64, poster string, genre s
}) })
} }
// DeleteByID deletes a movie by its id. // DeleteByID 通过id删除一个movie
// //
// Returns true if deleted otherwise false. // 返回true表示成功，其它都是失败
func (s *movieService) DeleteByID(id int64) bool { func (s *movieService) DeleteByID(id int64) bool {
return s.repo.Delete(func(m datamodels.Movie) bool { return s.repo.Delete(func(m datamodels.Movie) bool {
return m.ID == id return m.ID == id
@ -750,8 +754,9 @@ func (s *movieService) DeleteByID(id int64) bool {
} }
``` ```
#### View Models #### 视图模型
视图模型处理给客户端看的
There should be the view models, the structure that the client will be able to see. There should be the view models, the structure that the client will be able to see.
Example: Example: