API Platform filter entity data

问题

I just start to use Api platform and immediately stuck with problem how to filter data. I have entity User and i want to filter data that are present in response ( JSON API format)

{
    "links": {
        "self": "/api/users"
    },
    "meta": {
        "totalItems": 2,
        "itemsPerPage": 30,
        "currentPage": 1
    },
    "data": [
        {
            "id": "/api/users/1",
            "type": "User",
            "attributes": {
                "_id": 1,
                "username": "jonhdoe",
                "isActive": true,
                "address": null
            }
        },
        {
            "id": "/api/users/3",
            "type": "User",
            "attributes": {
                "_id": 3,
                "username": "test",
                "isActive": true,
                "address": null
            }
        }
    ]
}

so I want to remove e.g. User with id 3, but not use filters sent via request. I just want to set filter that will be always run when someone go to /api/users. I look to api-platform extensions but this will be applied on each request e.g. /api/trucks. So at end I just want to get something like

{
    "links": {
        "self": "/api/users"
    },
    "meta": {
        "totalItems": 1,
        "itemsPerPage": 30,
        "currentPage": 1
    },
    "data": [
        {
            "id": "/api/users/1",
            "type": "User",
            "attributes": {
                "_id": 1,
                "username": "jonhdoe",
                "isActive": true,
                "address": null
            }
        }
    ]
}

回答1:

As you pointed out, extensions are the way to go.

The applyToCollection method gets a $resourceClass parameter containing the current resource class.

So you can apply the WHERE clause only for a specific class in this method like:

public function applyToCollection(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, string $operationName = null)
{
    if (User::class === $resourceClass) {
        $queryBuilder->doSomething();
    }
    // Do nothing for other classes
}

来源：https://stackoverflow.com/questions/48965324/api-platform-filter-entity-data