Flask / Eve: Internal GET request with parameters

Question

I am using a flask webserver (part of an eve api) and need to do an internal GET-request.

For an external request I use this code:

url = 'http://127.0.0.1:5000/simulations'
r = requests.get(url,
                 headers={'Content-Type': 'application/json', 'Accept': 'application/json'},
                 params={'hateoas': False}
                 )

However, this is not working when trying to execute the request using the requests module from a function within the flask app and raises an ConnectionRefusedError:

requests.exceptions.ConnectionError: ('Connection aborted.', ConnectionRefusedError(61, 'Connection refused'))

In order to make this request available internally, I considered to use the test_client() of my flask application as follows:

r = app.test_client().get(url,
                          headers={'Content-Type': 'application/json', 'Accept': 'application/json'}
                          )

This is working pretty well, but I need to pass additional parameters as you can see in my first sample snippet using the requests module. So I extended the code above to this:

r = app.test_client().get(url,
                          headers={'Content-Type': 'application/json', 'Accept': 'application/json'},
                          params={'hateoas': False}
                          )

Unfortunately, this raises a TypeError:

TypeError: init() got an unexpected keyword argument 'params'

So is there a way to handle a GET-request either using flask or eve internally?

I know that there is a get_internal repo branch for eve delivering a development implementation of get_internal() comparable to the other request types like post_internal(). But I do not like to use this development branch since it is not sure whether this feature would be implemented in the next stable release.

Answer 1

The way you pass the query string is not right, you should:

r = app.test_client().get(url,
                          headers={'Content-Type': 'application/json', 'Accept': 'application/json'},
                          query_string={'hateoas': False})

use the query_string keyword.

By the way, if you're posting, use the data keyword.