CODEWITHSUNDEEP
pythonhtmljinja2cherrypy
ulrich
ulrich

Reputation: 3587

Cherrypy symple dynamic html

I have a very simple query and I apologies, but I have been stuck without being able find the answer for a while.

In the script bellow I am trying to "dynamically" create a url using some variable url1 and url2 generated by python further down.

I have tried with % but no success either.

Could someone indicate what is wrong with the code.

Thanks

import cherrypy

class PageGenerator(object):
    page_template = """<html>
          <head></head>
          <body>
            <div><p><object data=http://en.wikipedia.org/w/index.php?title={{url1}} width="1200" height="600">  Error: Embedded data could not be displayed. </object>
            </p>
            <p><object data=http://en.wikipedia.org/w/index.php?title={{url2}} width="1200" height="600">  Error: Embedded data could not be displayed. </object>
            </p></div>
          </body>
        </html>"""

    @cherrypy.expose
    def generate(self, url1):
        url1 = "Neurosurgery "
        return url1
    @cherrypy.expose
    def generate(self, url2):
        url2 = "Urology "
        return url12

if __name__ == '__main__':
    cherrypy.quickstart(PageGenerator())

Upvotes: 0

Views: 764

Answers (1)

saaj
saaj

Reputation: 25234

Python has 3 standard ways of string formatting (or interpolation).

  1. % (modulo operator). 'one %s, two %s' % (var1, var2).
  2. str.format. 'one {0}, two {1}'.format(var1, var2).

  3. string.Template class.

    from string import Template

t = Template('one $var1, two $var2')
t.substitute(var1 = var1, var2 = var2)

The placeholder syntax you use in the template is not implemented in Python's batteries. Besides by returning a string, (url1 and url2 in your case), from a page handler, CherryPy will obviously just display it. It knows nothing about your page_template attribute, and you need to instruct CherryPy to use it.

First, decide on template syntax. Either use standard 3, or learn about Jinja2 (the syntax you're using). In latter case, StackOverflow has plenty of information. Second, do interpolation not just return a variable.

Upvotes: 1

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