CODEWITHSUNDEEP
pythondjangomongodbmodelmongoengine
gc5
gc5

Reputation: 9868

Invalid EmbeddedDocumentField item while saving instance of django mongoengine model (fails on save())

I am trying to save an instance of a model but I get 

Invalid EmbeddedDocumentField item (1)

where 1 is item's id (I think).

Model is defined as

class Graph(Document):
    user = StringField(max_length=50, required=True)
    title = StringField(max_length=500)
    description = StringField(max_length=1000)
    # field in error
    graph_nodes = ListField(EmbeddedDocumentField(Graph_Node))
    procedure = ListField(DictField())
    created_on = DateTimeField(default=datetime.datetime.now)

    def __unicode__(self):
        return self.title

    meta = {
        'ordering': ['-created_on'],
        'allow_inheritance': False,
    }


class Graph_Node(EmbeddedDocument):
    id = StringField(required=True, max_length=30)
    button = StringField(max_length=40, required=True)
    parameter = StringField(max_length=50, required=False)
    values = ListField(StringField(max_length=30, required=False))
    wires_out = ListField(StringField(max_length=30, required=False))
    wires_in = ListField(StringField(max_length=30, required=False))

    def __unicode__(self):
        return self.id

    meta = {
        'allow_inheritance': False
    }

    def fill(self, args):
        for k in args.keys():
            if k in self.__dict__['_data'].keys():
                self.__dict__['_data'][k] = args[k]

Call for save() method is the following:

Graph(user=request.user.username, title=title, 
      description=description, procedure=procedura, 
      graph_nodes=gnlist).save()

And exception is thrown on save, not on Graph creation.

gnlist is (from pydev debugger)

list: [<Graph_Node: start>, <Graph_Node: 1>, <Graph_Node: end>]

and gnlist[1] seems to be well formed (I'll post more details if needed)

I've tried to trace the query on mongodb but it doesn't seem to be profiled, however output follows (in case help me to purge it from irrelevant logs):

{ "ts" : ISODate("2012-10-26T18:25:07.492Z"), "op" : "query", "ns" : "analysis.system.indexes", "query" : { "expireAfterSeconds" : { "$exists" : true } }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 0, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(248), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(2), "w" : NumberLong(4) } }, "nreturned" : 0, "responseLength" : 20, "millis" : 0, "client" : "0.0.0.0", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:26:07.505Z"), "op" : "query", "ns" : "analysis.system.indexes", "query" : { "expireAfterSeconds" : { "$exists" : true } }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 0, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(680), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(4), "w" : NumberLong(7) } }, "nreturned" : 0, "responseLength" : 20, "millis" : 0, "client" : "0.0.0.0", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:26:25.803Z"), "op" : "query", "ns" : "analysis.system.profile", "query" : { }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 2, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(62), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(7), "w" : NumberLong(3) } }, "nreturned" : 2, "responseLength" : 758, "millis" : 0, "client" : "127.0.0.1", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:27:07.506Z"), "op" : "query", "ns" : "analysis.system.indexes", "query" : { "expireAfterSeconds" : { "$exists" : true } }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 0, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(698), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(6), "w" : NumberLong(7) } }, "nreturned" : 0, "responseLength" : 20, "millis" : 0, "client" : "0.0.0.0", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:27:18.817Z"), "op" : "query", "ns" : "analysis.system.profile", "query" : { }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 4, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(121), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(11), "w" : NumberLong(8) } }, "nreturned" : 4, "responseLength" : 1463, "millis" : 0, "client" : "127.0.0.1", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:28:02.570Z"), "op" : "query", "ns" : "analysis.system.profile", "query" : { }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 5, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(112), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(13), "w" : NumberLong(7) } }, "nreturned" : 5, "responseLength" : 1799, "millis" : 0, "client" : "127.0.0.1", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:28:07.507Z"), "op" : "query", "ns" : "analysis.system.indexes", "query" : { "expireAfterSeconds" : { "$exists" : true } }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 0, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(680), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(5), "w" : NumberLong(7) } }, "nreturned" : 0, "responseLength" : 20, "millis" : 0, "client" : "0.0.0.0", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:28:11.608Z"), "op" : "query", "ns" : "analysis.system.profile", "query" : { }, "ntoreturn" : 0, "ntoskip" : 0, "nscanned" : 7, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(117), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(10), "w" : NumberLong(7) } }, "nreturned" : 7, "responseLength" : 2504, "millis" : 0, "client" : "127.0.0.1", "user" : "" }
{ "ts" : ISODate("2012-10-26T18:28:51.589Z"), "op" : "command", "ns" : "analysis.$cmd", "command" : { "profile" : 0 }, "ntoreturn" : 1, "keyUpdates" : 0, "numYield" : 0, "lockStats" : { "timeLockedMicros" : { "r" : NumberLong(0), "w" : NumberLong(24) }, "timeAcquiringMicros" : { "r" : NumberLong(0), "w" : NumberLong(11) } }, "responseLength" : 58, "millis" : 0, "client" : "127.0.0.1", "user" : "" }

Thanks

Upvotes: 2

Views: 1931

Answers (1)

gc5
gc5

Reputation: 9868

It seems it is resolved:

I found this issue.

I installed the new stable version of mongoengine : 0.6.2

After a restart mongoengine told me where was the problem:

values attribute was too short to hold a file path, so I changed

values = ListField(StringField(max_length=30, required=False))

to

values = ListField(StringField(max_length=100, required=False))

Thanks to all

Upvotes: 2

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