Need a 'text' parameter to parse duckling rasa x - rasa-x

Question

I am trying to run duckling locally. So with the help of this article I installed stack, and then
cloned duckling code
git clone https://github.com/facebook/duckling.git
download the zoneinfo and updated the reference in exe/ExampleMain.hs
let defaultPath = "duckling/exe/zoneinfo/"
let fallbackPath = "exe/zoneinfo/"
build using
stack build
then run using
stack exec duckling-example-exe
now if i hit http://localhost:8000/parse in the postman with request type POST and with following content
{
"text": "tommorow",
"locale": "de_DE",
"tz": "Europe/Berlin",
"dims": [
"time"
],
"reftime": 1616571265000
}
it shows 422 bad input
Need a 'text' parameter to parse
and if i hit the same request again it shows 200 OK
quack!
any help?

Answer 1

I see that you are trying to send the request as a JSON, however, the "http://localhost:8000/parse" endpoint expects the input to be sent as "form-encoded" data.
Refer to this image for a sample snapshot - https://i.stack.imgur.com/Cqdz4.png

Answer 2

You can check the source code of RASA open source. They are using requests python library to use duckling inside RASA for data parsing.
Here is the source code, here
It will be so useful to know the correct format of text data.
Also, I will show you how to use duckling through a simple example:
Be sure that you compile and run the binary:
$ stack build
$ stack exec duckling-example-exe
Insdie pythod code environment or any IDE that support python run the following:
import requests
t = requests.post('http://0.0.0.0:8000/parse', data={'text':'tomorrow at eight', 'locale':'en_GB'})
print(t.text)
The output is
[{"body":"tomorrow at eight","start":0,"value":{"values":[{"value":"2021-09-27T08:00:00.000-07:00","grain":"hour","type":"value"},{"value":"2021-09-27T20:00:00.000-07:00","grain":"hour","type":"value"}],"value":"2021-09-27T08:00:00.000-07:00","grain":"hour","type":"value"},"end":17,"dim":"time","latent":false}]