change the mime-type of particular static files in tornado web

Question

i have a bunch of files in my /static/ dir serverside with names like:

Slide0.html    Slide121.html  Slide143.html  Slide165.html  Slide187.html  Slide208.html  
Slide28.html   Slide4.html   Slide71.html  Slide93.html
Slide100.html  Slide122.html  Slide144.html  Slide166.html  Slide188.html  Slide209.html  

and i fetch them on the same domain and insert them to a iframe periodically, all they do is to render some images, but the browser is giving the following error:

Resource interpreted as Image but transferred with MIME type text/html: "http://localhost:8888/static/Slide66.html". 

i tried to subclass the staticfilehandler in vain:

class StaticHandler(tornado.web.StaticFileHandler):

def get(self, path):
    abspath = os.path.abspath(os.path.join(self.root, path))
    mime_type, encoding = mimetypes.guess_type(abspath)
    if mime_type:
        self.set_header("Content-Type", mime_type)

    if 'Slide' in abspath:
        self.set_header('Content-Type',"image/jpg" )

but the error persists how do i adjust it?

Answer 1

In Tornado 3.1 you can subclass StaticFileHandler and override get_content_type().

class StaticJSONFileHandler(tornado.web.StaticFileHandler):
    def get_content_type(self):
        return 'application/json'