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    <p>Here is how I did it. It is more straight forward than you think. Note the following taken from <a href="http://code.google.com/appengine/docs/python/blobstore/overview.html" rel="nofollow">Blobstore overview</a>. <em>"When the Blobstore rewrites the user's request, the MIME parts of the uploaded files have their bodies emptied, and the blob key is added as a MIME part header. <strong>All other form fields and parts are preserved and passed to the upload handler</strong>."</em> In the upload handler is where you can do whatever it is you want with the other form fields. </p> <pre><code> class Topic(db.Model): title = db.StringProperty(multiline=False) blob = blobstore.BlobReferenceProperty() imageurl = db.LinkProperty() class MainHandler(webapp.RequestHandler): def get(self): upload_url = blobstore.create_upload_url('/upload') self.response.out.write('&lt;html&gt;&lt;body&gt;') self.response.out.write('&lt;form action="%s" method="POST" enctype="multipart/form-data"&gt;' % upload_url) self.response.out.write("""Upload File: &lt;input type="file" name="file"&gt;&lt;br&gt; &lt;div&gt;&lt;label&gt;Title:&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;textarea name="title" rows="1" cols="25"&gt;&lt;/textarea&gt;&lt;/div&gt;&lt;input type="submit" name="submit" value="Submit"&gt; &lt;/form&gt;""") self.response.out.write('&lt;br&gt;&lt;br&gt;&lt;h2&gt;TOPIC LIST&lt;/h2&gt;&lt;table border="1"&gt;&lt;tr&gt;&lt;td&gt;') for topic in Topic.all(): self.response.out.write('&lt;div&gt;&lt;img src="%s=s48"/&gt;' % topic.imageurl) self.response.out.write('&lt;div&gt;&lt;b&gt;Image URL: &lt;/b&gt;&lt;i&gt;%s&lt;/i&gt;&lt;/div&gt;' % topic.imageurl) self.response.out.write('&lt;div&gt;&lt;b&gt;Title: &lt;/b&gt;&lt;i&gt;%s&lt;/i&gt;&lt;/div&gt;' % topic.title) self.response.out.write('&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;br&gt;') self.response.out.write('&lt;/body&gt;&lt;/html&gt;') class UploadHandler(blobstore_handlers.BlobstoreUploadHandler): def post(self): upload_files = self.get_uploads('file') # 'file' is file upload field in the form blob_info = upload_files[0] topic = Topic() topic.title = self.request.get("title") topic.blob = blob_info.key() topic.imageurl = images.get_serving_url(str(blob_info.key())) topic.put() self.redirect('/') def main(): application = webapp.WSGIApplication( [('/', MainHandler), ('/upload', UploadHandler), ], debug=True) run_wsgi_app(application) </code></pre>
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