Question

Having a hard time to upload and display image in python gae.

Here is what I did.
1. in the app.yaml file, I added:

handlers:

- url: /favicon\.ico
  static_files: favicon.ico
  upload: favicon\.ico

- url: /(.*\.(gif|png|jpg))
  static_files: /\1
  upload: (.*\.(gif|png|jpg))

- url: .*
  script: main.app

1. Then put down:

in

def Character(db.Model):
   avatar = db.BlobProperty()

under my handler:

if avatar:
  character_info.avatar = db.Blob(images.resize(avatar, 240,360))
   character_key = character_info.put()

I can see a binary input in gae admin data viewer, but not sure exactly how it works to call it. Then, I passed the characters object into the PageHandler and called a for loop to get each avatar.

{% for character in characters %}
#{{another html page is render here}}
{% endfor %}

tried these, but None of them works.

<img src="/images?img_id={{character.key()}}"></img>
<img src="/images/header.jpg"></img>
<img src="/avatar?avatar_id={{character.key()}}"></img>

So my questions are:

1. How do you determine “/images”(this is the folder?) or “img_id” are the right syntax to use?

2. I don’t see any image uploaded to my localhost, is that correct?

3. Calling an image directly from a folder like <img src="/images/header.jpg"></img> doesn’t work…(in php it’s works….)

Thanks in advance, any help will be appreciated!

Answer 1

Alright, I figured out what I did wrong was I didn’t add an image handler.

So

class ImageHandler(Handler):
    def get(self):
        character = db.get(self.request.get('img_id'))
        if character.avatar:
            self.response.headers['Content-Type'] = 'image/png'
            self.response.out.write(character.avatar)
        else:
            self.response.out.write("No image")

This solves my problem.