Binding issue with multipart form and files uplaod

[p581581]

Hi,

I'm currently using go v1.9.2 and gin v1.2. Is there any way to bind file data with form and check if it is exist. Or, form's file can only be retrieved by c.fromfile()

Here is the form struct:

// Binding from Form
type PhoptUploadForm struct {
	imgData    *multipart.FileHeader `form:"img_data" binding:"required"`
	ProjectID   string `form:"project_id" binding:"required"`
	Description string `form:"description binding:"required"`
}

and the request body:

------WebKitFormBoundarysOtthv5MjO3ut9Ao
Content-Disposition: form-data; name="img_data"; filename="blob"
Content-Type: image/jpeg


------WebKitFormBoundarysOtthv5MjO3ut9Ao
Content-Disposition: form-data; name="project_id"

263a5c1d-c8f8-4bf2-9bc5-e70982820a96
------WebKitFormBoundarysOtthv5MjO3ut9Ao
Content-Disposition: form-data; name="description"

description-test
------WebKitFormBoundarysOtthv5MjO3ut9Ao

[thinkerou]

#1264 merged! thanks!