bessgoogleapp-step4.py

We add a complete upload page, and extract the name of the dataset in this page.

from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app

def generate_menu(out):
    out.write("<p>You can go to:</p>")
    for page in ["upload","visualise"]:
        out.write("<p><a href='"+page+"'>"+page+"</a></p>")

class MainPage(webapp.RequestHandler):
    def get(self):
        self.response.out.write('<h1>Welcome to the BESS cloud tutorial!</h1>')
        out = self.response.out
        generate_menu(out)

class UploadPage(webapp.RequestHandler):
    def get(self):
        out = self.response.out
        out.write('<h1>Welcome to the BESS upload page!</h1>')
        out.write("""<form action='/completeupload' method='post'>
                     <div>Name of dataset:<br/>
                          <input type='text' name='dataset_name' maxlength='120' size='15'></div>
                     <div>Description:<br/>
                          <textarea name='dataset_descrip' rows='3' cols='60'></textarea></div>
                     <div>Content of dataset:<br/>
                          <textarea name='dataset_content' rows='10' cols='60'></textarea></div>
                     <div><input type='submit' value='Upload Dataset'></div>
                   </form>""")

        generate_menu(out)

class CompleteUploadPage(webapp.RequestHandler):
    def post(self):
        out = self.response.out
        out.write('<h1>Upload completed</h1>')
        dataset_name = self.request.get('dataset_name')
        out.write("<b>"+dataset_name + "</b> was uplodaded successfully.")
        generate_menu(out)


class VisualisePage(webapp.RequestHandler):
    def get(self):
        self.response.out.write('<h1>Welcome to the BESS visualise page!</h1>')

application = webapp.WSGIApplication(
                                     [('/'      , MainPage  ),
                                      ('/upload', UploadPage),
                                      ('/visualise' , VisualisePage ),
                                      ('/completeupload' , CompleteUploadPage )],
                                     debug=True)

def main():
    run_wsgi_app(application)

if __name__ == "__main__":
    main()
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Last generated on 17 Sep 2015       francois.taiani@irisa.fr     Valid HTML 4.0!