HTTP Header Specifics
As mentioned in the Authentication section, to perform an API request successfully, it is important to provide the correct Content-Type and Authentication parameters, e.g.,:
1 2 3 4 | GET /api/users HTTP/1.1
Content-Type: application/vnd.api+json
Authorization: WSSE profile="UsernameToken"
X-WSSE: UsernameToken Username="...",PasswordDigest="...", Created="...", Nonce="..."
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Also, by providing additional requests header parameters, it is possible to retrieve additional information, such as the total number of records per certain resource for the GET and DELETE methods or a total number of affected records for the DELETE method. The X-Include request header can be used for such purposes.
The following table describes all existing keys for the X-Include header.
| HTTP Method | X-Include key | Response Header | Description |
|---|---|---|---|
| any | noHateoas | Removes all HATEOAS related links from the response. | |
| GET | totalCount | X-Include-Total-Count | Returns the total number of entities. |
| DELETE | totalCount | X-Include-Total-Count | Returns the total number of entities. |
| DELETE | deletedCount | X-Include-Deleted-Count | Returns the number of deleted entities. |
Header Examples
Example 1. Total Number of Existing Records
Retrieve the total count of resource records.
Request header
1 2 3 4 5 6 7 | GET /api/users HTTP/1.1
Content-Type: application/vnd.api+json
Accept: application/vnd.api+json
Authorization: ...
...
X-Include: totalCount
|
Response
1 2 3 4 5 6 7 8 9 10 | HTTP/1.1 200 OK
Date: Fri, 23 Sep 2016 12:27:05 GMT
Server: Apache/2.4.18 (Unix) PHP/5.5.38
X-Include-Total-Count: 49
Content-Length: 585
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: application/vnd.api+json
|
Example 2. Total Number of Deleted Records
Retrieve the total number of deleted records of the resource
Request header
1 2 3 4 5 6 7 | DELETE /api/users HTTP/1.1
Content-Type: application/vnd.api+json
Accept: application/vnd.api+json
Authorization: ....
....
X-Include: deletedCount
|
Example 3. Conditions for the Delete Operation
Request query string contains a filter that specifies conditions for deletion operation. Filters are described in more detail in the Filters section.
Request header
1 2 3 4 5 | DELETE /api/users?filter[id]=21,22 HTTP/1.1
Content-Type: application/vnd.api+json
Accept: application/vnd.api+json
Authorization: ....
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Response
1 2 3 4 5 6 7 8 9 10 | HTTP/1.1 204 No Content
Date: Fri, 23 Sep 2016 12:38:47 GMT
Server: Apache/2.4.18 (Unix) PHP/5.5.38
X-Include-Deleted-Count: 2
Content-Length: 0
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html
|