files/{fileid} (HEAD)

Overview

Retrieve file attachment content (Note: image manipulation arguments are ignored for HEAD requests)

REST Method: HEAD
Method Access: public

Uri Parameters

Name	Type	Description
fileid	int	identifies a file by ID
filename	string	Double uri-encoded file name. Should be prefixed with "=" if it does not have an extension.
pageid	string	either an integer page ID, "home", or "=" followed by a double uri-encoded page title

Query Parameters

Name	Type	Description
authenticate	bool?	Force authentication for request (default: false)
redirects	int?	If zero, do not follow page redirects (only applies when {pageid} is present).
includeDeleted	bool	When fileid is an integer ID, and this parameter is set to true, we will even return the file info if it was deleted at some point
revision	string?	File revision to retrieve. 'head' by default will retrieve latest revision. positive integer will retrieve specific revision
size	{original, thumb, webview, bestfit, custom}?	Return a resized image from one of the preset cached sizes. Use 'thumb' or 'webview' to return a smaller scaled image. Use 'bestfit' along with height/width to return one of the known sizes being at least the size given. Default: original
format	{jpg, png, bmp, gif}?	Convert output to given type. Default is to use original type.
ratio	{fixed, var}?	Fixed preserves aspect ratio by applying height and width as bounding maximums rather than absolute values. Variable will use the width and height given. Default: fixed
width	int?	Width of the image
height	int?	Height of the image

Return Codes

Name	Value	Description
OK	200	The request completed successfully
Bad Request	400	Invalid input parameter or request body
Forbidden	403	Read access to the page is required
Not Found	404	Requested file could not be found
Not Implemented	501	Requested operation is not currently supported

Implementation Notes

The Content-Length and Content-Type headers provide information about the retrieved file.

Use GET:files to retrieve a list of files across the site or GET:pages/{pageid}/files to retrieve the files on a specified page.

Code Samples

The following code example retrieves the headers for the file with ID 456:

Plug p = Plug.New("http://example.mindtouch.us/@api/deki");
p.At("users", "authenticate").WithCredentials("admin", "password").Get();
DreamMessage msg = p.At("files", "456").Invoke("HEAD", DreamMessage.Ok());

Sample output:

Connection=close
Content-Length=110326
Content-Type=image/jpeg
Date=Wed, 14 May 2008 22:31:30 GMT
Server=Dream-HTTPAPI/1.5.2.25231 Microsoft-HTTPAPI/1.0
Via=1.0 example.mindtouch.us