json_node is list object not dictonary object

[GoogleCodeExporter]

Sometimes json_node object is a list type and not a dictionary therefore it has 
no attribute 'iteritems'

Original issue reported on code.google.com by aa...@aaronmdrake.com on 2 May 2012 at 6:02

Attachments:

• example.txt

[GoogleCodeExporter]

can expand a little more on your description?  i don't understand what the 
issue is.

Original comment by jahlborn@gmail.com on 3 May 2012 at 3:21

[GoogleCodeExporter]

Yea, the error message is:

Traceback (most recent call last):
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/webapp/_webapp25.py", line 703, in __call__
    handler.post(*groups)
  File "/Users/user/PROJECTS/gaerest/rest.py", line 1442, in post
    self.post_impl()
  File "/Users/user/PROJECTS/gaerest/rest.py", line 1459, in post_impl
    self.update_impl(path, model_name, model_key, "POST", False)
  File "/Users/user/PROJECTS/gaerest/rest.py", line 1484, in update_impl
    doc = self.input_to_xml()
  File "/Users/user/PROJECTS/gaerest/rest.py", line 1698, in input_to_xml
    return json_to_xml(self.request.body_file)
  File "/Users/user/PROJECTS/gaerest/rest.py", line 373, in json_to_xml
    json_node_to_xml(xml_doc.documentElement, json_node[doc_el_name])
  File "/Users/user/PROJECTS/gaerest/rest.py", line 382, in json_node_to_xml
    for json_node_name, json_node_value in json_node.iteritems():
AttributeError: 'list' object has no attribute 'iteritems'

I create the JSON string from the javascript object like in the example. Then I 
use jquery to POST the JSON data to the rest application. This is the error. 
The problem is that the "json_node" in the source code is a list and not a 
dictionary. So it will have to be copied to a dictionary or somehow cast as a 
dictionary.

Original comment by aa...@aaronmdrake.com on 3 May 2012 at 3:51

[GoogleCodeExporter]

what does your model look like.

Original comment by jahlborn@gmail.com on 3 May 2012 at 4:08

[GoogleCodeExporter]

class NavigationTiming(polymodel.PolyModel):
    unloadEventStart = db.IntegerProperty()
    unloadEventEnd = db.IntegerProperty()
    redirectStart = db.IntegerProperty()
    redirectEnd = db.IntegerProperty()
    fetchStart = db.IntegerProperty()
    domainLookupStart = db.IntegerProperty()
    domainLookupEnd = db.IntegerProperty()
    connectStart = db.IntegerProperty()
    connectEnd = db.IntegerProperty()
    secureConnectionStart = db.IntegerProperty()
    requestStart = db.IntegerProperty()
    responseStart = db.IntegerProperty()
    responseEnd = db.IntegerProperty()
    domLoading = db.IntegerProperty()
    domInteractive = db.IntegerProperty()
    domContentLoadedEventStart = db.IntegerProperty()
    domContentLoadedEventEnd = db.IntegerProperty()
    domComplete = db.IntegerProperty()
    loadEventStart = db.IntegerProperty()
    loadEventEnd = db.IntegerProperty()

class BrowserPerformanceData(NavigationTiming):
    createdate = db.DateTimeProperty(auto_now_add=True)
    sessid = db.StringProperty()
    url = db.URLProperty()
    loadtime = db.IntegerProperty()
    browser = db.StringProperty()
    useragent = db.TextProperty()

Original comment by drak...@gmail.com on 3 May 2012 at 4:09

[GoogleCodeExporter]

Perhaps another question would be how do I design the model such that the XML 
looks like this:

<BrowserPerformanceData>
  <createdate></createdate>
  <sessid></sessid>
  <url></url>
  ...
  <NavigationTiming>
    <unloadEventStart></unloadEventStart>
    <unloadEventEnd></unloadEventEnd>
    ....
  </NavigationTiming>
</BrowserPerformanceData>

Original comment by drak...@gmail.com on 3 May 2012 at 4:13

[GoogleCodeExporter]

Here is a fix that worked:
...snip...
def json_node_to_xml(xml_node, json_node):
    if (isinstance(json_node, list)):
        json_node = json_node[0]

    doc = xml_node.ownerDocument
...snip...

Original comment by aa...@aaronmdrake.com on 4 May 2012 at 3:55

[GoogleCodeExporter]

You json object is incorrectly formed, which is causing the error.  if you want 
to be able to post multiple objects, then you can use the form:

{'list': {'BrowserPerformanceData': [{ ... }]}}

If you only want to post a single object, then you can use the form:

{'BrowserPerformanceData': { ... }}

(note the lack of inner square braces).

Original comment by jahlborn@gmail.com on 15 May 2012 at 1:49

• Changed state: Invalid