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@ -392,30 +392,32 @@ func (c *MoviesController) DeleteBy(id int) iris.Map {
### MVC 快速指南 3
Iris是一个底层的Web开发框架，如果你喜欢按 **目录结构** 的约定方式开发，那么Iris框架对此毫无影响。
Nothing stops you from using your favorite **folder structure**. Iris is a low level web framework, it has got MVC first-class support but it doesn't limit your folder structure, this is your choice.
你可以根据自己的需求来创建目录结构，但是我建议你还是最好看看如下的目录结构例子：
[![目录结构例子](_examples/mvc/overview/folder_structure.png)](_examples/mvc/overview)
好了，直接上代码。
Structuring depends on your own needs. We can't tell you how to design your own application for sure but you're free to take a closer look to one typical example below;
[![folder structure example](_examples/mvc/overview/folder_structure.png)](_examples/mvc/overview)
Shhh, let's spread the code itself.
#### Data Model Layer
#### 数据模型层
```go
// file: datamodels/movie.go
package datamodels
// Movie is our sample data structure.
// Keep note that the tags for public-use (for our web app)
// should be kept in other file like "web/viewmodels/movie.go"
// which could wrap by embedding the datamodels.Movie or
// declare new fields instead butwe will use this datamodel
// as the only one Movie model in our application,
// for the shake of simplicty.
// Movie是我们例子数据结构
// 此Movie对象可能会在"web/viewmodels/movie.go"的文件里持有
// Movie的数据模型在应用中只有一个，这样使用就很简单了
type Movie struct {
ID int64 `json:"id"`
Name string `json:"name"`
@ -434,7 +436,7 @@ package datasource
import "github.com/kataras/iris/_examples/mvc/overview/datamodels"
// Movies is our imaginary data source.
// Movies是模拟的数据源
var Movies = map[int64]datamodels.Movie{
1: {
ID: 1,
@ -474,9 +476,9 @@ var Movies = map[int64]datamodels.Movie{
}
```
#### Repositories
#### 数据仓库
The layer which has direct access to the "datasource" and can manipulate data directly.
数据仓库层用来直接访问数据源
```go
// file: repositories/movie_repository.go
@ -490,12 +492,10 @@ import (
"github.com/kataras/iris/_examples/mvc/overview/datamodels"
)
// Query represents the visitor and action queries.
// Query 是数据访问的集合入口
type Query func(datamodels.Movie) bool
// MovieRepository handles the basic operations of a movie entity/model.
// It's an interface in order to be testable, i.e a memory movie repository or
// a connected to an sql database.
// MovieRepository 中会有对movie实体的基本操作
type MovieRepository interface {
Exec(query Query, action Query, limit int, mode int) (ok bool)
@ -506,23 +506,21 @@ type MovieRepository interface {
Delete(query Query, limit int) (deleted bool)
}
// NewMovieRepository returns a new movie memory-based repository,
// the one and only repository type in our example.
// NewMovieRepository 返回movie内存数据
func NewMovieRepository(source map[int64]datamodels.Movie) MovieRepository {
return &movieMemoryRepository{source: source}
}
// movieMemoryRepository is a "MovieRepository"
// which manages the movies using the memory data source (map).
// movieMemoryRepository 就是 "MovieRepository"，它管理movie的内存数据
type movieMemoryRepository struct {
source map[int64]datamodels.Movie
mu sync.RWMutex
}
const (
// ReadOnlyMode will RLock(read) the data .
   // 只读模式
ReadOnlyMode = iota
// ReadWriteMode will Lock(read/write) the data.
   // 写模式
ReadWriteMode
)