The request handler instance can access the request data using its
request
property. This is initialized to a populated WebOb
Request
object by the application.
The request object provides a get() method that returns values for arguments parsed from the query and from POST data. The method takes the argument name as its first parameter. For example:
class MyHandler(webapp.RequestHandler):
def post(self):
name = self.request.get("name")
By default, get() returns the empty string (
''
) if the requested argument is not in the request. If the parameter
default_value
is specified, get() returns the value of that parameter instead of the empty string if the argument is not present.
If the argument appears more than once in a request, get() returns the first occurrence. To get all occurrences of an argument as a possibly empty list, use get_all().
# <input name="name" type="text" />
name = self.request.get("name")
# <input name="subscribe" type="checkbox" value="yes" />
subscribe_to_newsletter = self.request.get("subscribe", default_value="no")
# <select name="favorite_foods" multiple="true">...</select>
favorite_foods = self.request.get_all("favorite_foods")
for food in favorite_foods:
# ...
For requests with body content that is not a set of CGI parameters, such as the body of an HTTP PUT request, the request object provides the attributes
body
and
body_file
.
body
is the body content as a byte string.
body_file
provides a file-like interface to the same data.
uploaded_file = self.request.body
WebOb is an open source third-party library. See the WebOb documentation for a detailed API reference and examples.