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Serializing Django objects¶. Django’s serialization framework provides a mechanism for “translating” Django models into other formats. Usually these other formats will be text-based and used for sending Django data over a wire, but it’s possible for a serializer to handle any format (text-based or not). Dec 24, 2017 firstly, you must be very careful overriding init to have non-optional arguments. Remember it will be called every time you get an object from a queryset! This is the correct code you want: class Animal(models.Model): #class Meta: #uncomment this for an abstract class # abstract = True aul = models.ForeignKey(Aul) weight = models.IntegerField(default=3) quality = models.IntegerField.
Im using Django Rest API Framework, I want to upload multiple images for a single project using Angular js.
- When I try to add an url attribute to my model I get this error: AttributeError: 'collections.OrderedDict' object has no attribute 'pk' These are the codes I use. I tried a lot of things but just.
- It has no content attribute. Instead, it has a streamingcontent attribute. You cannot use the file-like object tell or write methods. Doing so will raise an exception. StreamingHttpResponse should only be used in situations where it is absolutely required that the whole content isn’t iterated before transferring the data to the client.
- Django community: Django Q&A RSS This page, updated regularly, aggregates Django Q&A from the Django community. Original exception text was: 'Queryset' object has no attribute 'poslovnipartneri'.
Here's my model:
I have this serializers:
In my view I got this inside my viewsets.ModelViewSet
The variable photo_array contains:
[{'project': u'1', 'images': {u'name': u'test-image.png', u'lastModifiedDate': u'2015-04-22T08:51:11.000Z', u'webkitRelativePath': u', u'lastModified': 1429692671000, u'type': u'image/png', u'size': 43152}}, {'project': u'1', 'images': {u'name': u'test.png', u'lastModifiedDate': u'2015-04-08T08:35:17.000Z', u'webkitRelativePath': u', u'lastModified': 1428482117000, u'type': u'image/png', u'size': 127433}}]
But it gives me an error 'dict' object has no attribute 'pk'
Did my photo_array variable cause this problem?.
pythondjangoangularjsrestdjango-rest-framework|
this question asked May 5 '15 at 9:24 ring_22 42 8 It would be incredibly useful if you included the traceback for the error in your post. – Kevin Brown May 5 '15 at 22:52 |
2 Answers
2
I think you should update your UploadSerializer with id field
|
Object Has No Attribute Python
this answer answered May 5 '15 at 9:40 partha 1 1 2 Hi partha and welcome to StackOverflow. Could you please elaborate a bit on your answer, adding perhaps a code sample and an explanation to help other users understand why/how this will solve the problem? – Christina May 5 '15 at 9:53 Hi partha thanks for the answer. You mean adding 'id' to the fields inUploadSerializer ?. – ring_22 May 5 '15 at 10:00 use project_id key instead of project '[{'project': u'1',' and let m know – jatin May 5 '15 at 10:31 yes, add 'id' field to your uploadserializer. – partha May 7 '15 at 4:59 |
Without a traceback, I can only take an educated guess as to what the issue actually is.
Recommend:python - django rest framework 'QuerySet' object has no attribute '_meta'
es me AttributeError: 'QuerySet' object has no attribute '_meta' error. Below id my code models.py class Book(models.Model): name = models.CharField(max_length=200, null=False, blank=False) cover = models.ImageField(upload_to=Rename
You are using a standard
ModelSerializer
and you are allowing Django REST framework to generate your fields for you. You can introspect the generated fields by printing the output of repr(UploadSerializer())
, but they should look something like this:With those fields, a typical dictionary that would be passed back from the serializer should look something like
You'll notice that this is completely different from what you are passing in. You are passing in the data that would match a serializer that looks like
So that does answer your secondary question
Did my photo_array variable cause this problem?
Most likely. Mount and blade warband lord personality list. Now, I don't actually know what your issue is. It sounds like you are passing a dictionary into a
PrimaryKeyRelatedField
, but your serializers don't actually match up.|
this answer answered May 6 '15 at 0:27 Kevin Brown 20.1k 13 102 157 |
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Recommend:python - Django rest framework api
it to just send to me in Json 'Hello world' without writing or without opening a table in the DB this is my code: @api_view()def about(request): return Response({'message': 'Hello, world!'}) i put it in view.py what more i should do t
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I’m developing Django application, and I have following error
My models are constructed like this
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What I must do?
Answers:
firstly, you must be very careful overriding
__init__
to have non-optional arguments. remember it will be called every time you get an object from a queryset!this is the correct code you want: Diablo 3 user interface guide.
I highly suggest setting the abstract option on Animal if you will only ever be using subclasses of this object. This ensures a table is not created for animal and only for Sheep (etc.). if abstract is not set, then an Animal table will be created and the Sheep class will be given it’s own table and an automatic ‘animal’ field which will be a foreign key to the Animal model.
Answers:
Django docs recommend against you to use
__init__
method in models: May 02, 2019 GEORGE OF THE JUNGLE (1997).
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Django Serialize Dict Object Has No Attribute Meta File
You may be tempted to customize the model by overriding the
__init__
method. If you do so, however, take care not to change the calling signature as any change may prevent the model instance from being saved. Rather than overriding __init__
, try using one of these approaches:- Add a classmethod on the model class
- Add a method on a custom manager (usually preferred)
Tags: object