我正在开发一个 RESTful Web 应用程序——Apigility驱动并基于Zend Framework 2。对于模型层，我使用的是. 该模型本质上由两个实体组成：和( )，目前实现如下：ZfcBase DbMapperProjectImage1:n
ProjectCollection extends Paginator
ProjectEntity
ProjectMapper extends AbstractDbMapper
ProjectService implements ServiceManagerAwareInterface
ProjectServiceFactory implements FactoryInterface
相同的结构Image。
当/projects[/:id]请求资源 ( ) 时，响应的项目实体应包含其实体列表Image。
那么，如何/应该如何1:n实施这种结构？
子问题：
[
DbMapper] 是否提供了一些“魔术”来“自动”检索此类树结构而无需编写JOINs（或使用 ORM）？[
Apigility] 是否为构建嵌套响应提供了一些“魔法”？
{
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects?page=1"
},
"first": {
"href": "http://myproject-api.misc.loc/projects"
},
"last": {
"href": "http://myproject-api.misc.loc/projects?page=1"
}
},
"_embedded": {
"projects": [
{
"id": "1",
"title": "project_1",
"images": [
{
"id": "1",
"title": "image_1"
},
{
"id": "2",
"title": "image_2"
}
],
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects/1"
}
}
},
{
"id": "2",
"title": "project_2",
"images": [
{
"id": "3",
"title": "image_3"
},
{
"id": "4",
"title": "image_4"
}
],
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects/1"
}
}
}
]
},
"page_count": 1,
"page_size": 25,
"total_items": 1
}
编辑
我目前得到的输出是：
/projects/:id
{
"id": "1",
"title": "...",
...
"_embedded": {
"images": [
{
"id": "1",
"project_id": "1",
"title": "...",
...
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/images/1"
}
}
},
{
"id": "2",
"project_id": "1",
"title": "...",
...
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/images/2"
}
}
},
{
"id": "3",
"project_id": "1",
"title": "...",
...
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/images/3"
}
}
}
]
},
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects/1"
}
}
}
所以它适用于一个单一的对象。但不适用于集合，其中单个项目包括更多集合：
/projects
{
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects?page=1"
},
"first": {
"href": "http://myproject-api.misc.loc/projects"
},
"last": {
"href": "http://myproject-api.misc.loc/projects?page=24"
},
"next": {
"href": "http://myproject-api.misc.loc/projects?page=2"
}
},
"_embedded": {
"projects": [
{
"id": "1",
"title": "...",
... <-- HERE I WANT TO GET ["images": {...}, {...}, {...}]
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects/1"
}
}
},
{
"id": "2",
"title": "...",
... <-- HERE I WANT TO GET ["images": {...}, {...}, {...}]
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects/2"
}
}
},
{
"id": "3",
"title": "...",
... <-- HERE I WANT TO GET ["images": {...}, {...}, {...}]
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects/3"
}
}
}
]
},
"page_count": 24,
"page_size": 3,
"total_items": 72
}
编辑
我编辑了我的代码并朝着目标迈出了一步。
它无法工作，因为我ProjectService#getProjects()只是从数据库中返回项目的数据，而不是丰富的图像：
public function getProjects() {
return $this->getMapper()->findAll();
}
编辑为：
public function getProjects() {
$projects = $this->getMapper()->findAll();
foreach ($projects as $key => $project) {
$images = $this->getImageService()->getImagesForProject($project['id']);
$projects[$key]['images'] = $images;
}
return $projects;
}
和ProjectMapper#findAll()
public function findAll() {
$select = $this->getSelect();
$adapter = $this->getDbAdapter();
$paginatorAdapter = new DbSelect($select, $adapter);
$collection = new ProjectCollection($paginatorAdapter);
return $collection;
}
编辑为：
public function findAll() {
$select = $this->getSelect();
$adapter = $this->getDbAdapter();
$paginatorAdapter = new DbSelect($select, $adapter);
// @todo Replace the constants with data from the config and request.
$projects = $paginatorAdapter->getItems(0, 2);
$projects = $projects->toArray();
return $projects;
}
现在我得到了想要的输出：
{
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects"
}
},
"_embedded": {
"projects": [
{
"id": "1",
"title": "...",
...
"_embedded": {
"images": [
{
"id": "1",
"project_id": "1",
"title": "...",
...
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/images/1"
}
}
},
{
...
},
{
...
}
]
},
"_links": {
"self": {
"href": "http://myproject-api.misc.loc/projects/1"
}
}
},
{
"id": "2",
"title": "...",
...
"_embedded": {
"images": [
...
]
},
...
}
]
},
"total_items": 2
}
但这是一个有点糟糕的解决方案，不是吗？我实际上在做的是：我只是替换了 Apigility 数据检索功能的一部分......无论如何，我不喜欢这个解决方案并想找到一个更好的解决方案（“Apigility 符合解决方案”）。