code: def get_modal_link(self, url, obj={}):
          
          if not (url in self.modal_links.keys()):
              return None
  
          try:
              if type(obj) != dict:
                  obj.obj = str(obj)
                  obj = vars(obj)
              link = self.modal_links[url]
              if link["type"] == "confirm":
                  link["message"] = link["message"].format(**obj)
                  link["title"] = link["title"].format(**obj)
                  link["ok"]  # triggers a KeyError exception if not existent
                  link["cancel"]
              elif link["type"] == "iframe":
                  try:
                      link["size"]
                  except KeyError:
                      link["size"] = "medium"
              else:
                  raise ImproperlyConfigured(
                      "modal_links type: " + link["type"] + " is unsupported"
                  )
              return link
          except KeyError as e:
              raise ImproperlyConfigured(
                  "modal_links misses the following attribute: " + str(e)
              )
          except AttributeError:
              return None
docs: Returns the metadata for a link that needs to be confirmed, if it
          exists, it also parses the message and title of the url to include
          row field data if needed.