unicode issue using Python 2.7.2

[lshabbot]

I am using Python 2.7.2 and did a pip install jsonpatch

I am seeing the following error when trying to apply a patch to my json doc.

patch = jsonpatch.apply_patch(data['request_body'], myPatch)
File "/Users/test/projects/venv/lib/python2.7/site-packages/jsonpatch.py", line 102, in apply_patch
return patch.apply(doc, in_place)
File "/Users/test/projects/venv/lib/python2.7/site-packages/jsonpatch.py", line 301, in apply
obj = operation.apply(obj)
File "/Users/test/projects/venv/lib/python2.7/site-packages/jsonpatch.py", line 393, in apply
subobj, part = self.pointer.to_last(obj)
File "/Users/test/projects/venv/lib/python2.7/site-packages/jsonpointer.py", line 129, in to_last
return doc, self.get_part(doc, self.parts[-1])
File "/Users/test/projects/venv/lib/python2.7/site-packages/jsonpointer.py", line 168, in get_part
raise JsonPointerException("Unknown document type '%s'" % (doc.class,))
JsonPointerException: Unknown document type '<type 'unicode'>'

[stefankoegl]

What values are data['request_body'] and myPatch? Can you provide a small, self-contained example?

[lshabbot]

#pip install Flask
#pip install flask-restful
#pip install jsonpatch

#Sample curl command
curl --insecure -H "Content-Type:application/json" -d "{
"request_body": "{\"type\" : \"dog\",\"number\" : \"1108-bd031334\", \"owner_name\" : \"Joe Smith\",\"billing_address\" : {\"line1\" : \"49 N. Main St.\",\"city\" : \"Johnstown\",\"state\" : \"OH\",\"postal_code\" : \"43210\",\"country_code\" : \"US\"}}"
}" "http://127.0.0.1:5000/"

#Sample Program
import json
import jsonpatch
from flask import Flask, request, abort
from flask.ext.restful import Api, Resource

app = Flask(name)
api = Api(app)

replacepatch = '[{"op": "replace", "path": "/number", "value" : "zzzz"}]'

class TestService(Resource):
def post(self):
if not request.json:
abort(400)
data = json.loads(request.data)
print "data: ", data
requestbody = data['request_body']
print "request_body: ", requestbody
patch = jsonpatch.apply_patch(requestbody, replacepatch)
print "patch: ", patch
return 200

api.add_resource(TestService, '/')

if name == 'main':
app.run(debug=True)

#Output
Traceback (most recent call last):
File "/Users/user/projects/venv/lib/python2.7/site-packages/flask/app.py", line 1358, in full_dispatch_request
rv = self.dispatch_request()
File "/Users/user/projects/venv/lib/python2.7/site-packages/flask/app.py", line 1344, in dispatch_request
return self.view_functionsrule.endpoint
File "/Users/user/projects/venv/lib/python2.7/site-packages/flask_restful/init.py", line 242, in wrapper
resp = resource(_args, *_kwargs)
File "/Users/user/projects/venv/lib/python2.7/site-packages/flask/views.py", line 83, in view
return self.dispatch_request(_args, *_kwargs)
File "/Users/user/projects/venv/lib/python2.7/site-packages/flask_restful/init.py", line 318, in dispatch_request
resp = meth(_args, *_kwargs)
File "test.py", line 19, in post
patch = jsonpatch.apply_patch(requestbody, replacepatch)
File "/Users/user/projects/venv/lib/python2.7/site-packages/jsonpatch.py", line 102, in apply_patch
return patch.apply(doc, in_place)
File "/Users/user/projects/venv/lib/python2.7/site-packages/jsonpatch.py", line 301, in apply
obj = operation.apply(obj)
File "/Users/user/projects/venv/lib/python2.7/site-packages/jsonpatch.py", line 393, in apply
subobj, part = self.pointer.to_last(obj)
File "/Users/user/projects/venv/lib/python2.7/site-packages/jsonpointer.py", line 129, in to_last
return doc, self.get_part(doc, self.parts[-1])
File "/Users/user/projects/venv/lib/python2.7/site-packages/jsonpointer.py", line 168, in get_part
raise JsonPointerException("Unknown document type '%s'" % (doc.class,))
JsonPointerException: Unknown document type '<type 'unicode'>'

[stefankoegl]

There is probably some issue that is not related to jsonpointer. Please reduce your example so that no unrelated code is used. In the end it should be as simple as

doc = something
patch = somethingelse
jsonpatch.apply_patch(doc, patch)

As long as I don't know what you're passing to the function, I can't tell you what's wrong.

[lshabbot]

I think it is something I introduced. I did the bare-bones app, and it works. I will investigate on my in. Sorry for the false alarm :)