Adding DRF to existing solution, getting AttributeError: 'function' object has no attribute 'filter'

[michaeloliveraz]

I have existing and working app with the following models.py

`#parameters/models.py
from symbol import parameters
from django.db import models

Create your models here.

from django.db import models

class Parameter(models.Model):
id = models.BigAutoField(primary_key=True)
matchingKey = models.CharField(max_length=200)
sequence = models.IntegerField(default = 1)
param_kwargs_json = models.JSONField(null=True, blank=True)
param1 = models.CharField(max_length=200)
param2 = models.CharField(max_length=200, null = True, default = 'N/A' )
param3 = models.CharField(max_length=200, null = True, default = 'N/A' )
param4 = models.CharField(max_length=200, null = True, default = 'N/A' )
param5 = models.CharField(max_length=200, null = True, default = 'N/A' )
param6 = models.CharField(max_length=200, null = True, default = 'N/A' )
param7 = models.CharField(max_length=200, null = True, default = 'N/A' )
param8 = models.CharField(max_length=200, null = True, default = 'N/A' )
param9 = models.CharField(max_length=200, null = True, default = 'N/A' )
param10 = models.CharField(max_length=200, null = True, default = 'N/A' )
description = models.CharField(max_length=250, null = True, default = 'N/A' )

# def __str__(self):
#     return self.matchingKey

class Meta:
    ordering = ('matchingKey', )

def save(self, *args, **kwargs):
    """
    Use the `pygments` library to create a highlighted HTML
    representation of the code snippet.
    """
    super(Parameter, self).save(*args, **kwargs)

`
I created an api/ app and views.py, urls.py and serializers.py

`#/api/views.py
from django.shortcuts import render

Create your views here.

from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.decorators import api_view
from rest_framework.reverse import reverse
from rest_framework import generics
from parameters.models import Parameter

import api.serializers as serializers

class ParametersListAPIView(generics.ListCreateAPIView):
queryset = Parameter.objects.all()
serializer_class = serializers.ParametersListSerializer

class ParameterAPIView(generics.RetrieveUpdateDestroyAPIView):
queryset = Parameter.objects.all()
serializer_class = serializers.ParameterSerializer

@api_view(('GET',))
def api_root(request, format=None):
return Response({
'parameters': reverse('parameters', request=request, format=format),
})`

and

`#/api/urls.py
from django.conf.urls import url, include
from . import views

apiurls = [

url(r'^parameters/(?P<pk>[0-9]+)/$',
    views.ParameterAPIView.as_view(),
    name='parameters-detail'
),
url(r'^parameters/$',
    views.ParametersListAPIView.as_view(),
    name='paramters'
)
] 

urlpatterns = [
url(r'^$', views.api_root, name='api-root'),
url(r'^', include(apiurls)),
url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework'))
]
`
and finally

`#/api/serializers.py
from rest_framework import serializers
from parameters.models import Parameter

class ParametersListSerializer(serializers.ModelSerializer):
class Meta:
model = Parameter
fields = 'all'

class ParameterSerializer(serializers.ModelSerializer):
class Meta:
model = Parameter
fields = 'all'
`

When I use http://localhost:8000/parameters/ I get the /parameters/templates/paramersindex.html page.

When I click on one of the parameters items http://localhost:8000/parameters/1/

I get the following error page.

`

Request Method:	GET
http://localhost:8000/parameters/1/
3.2.15
AttributeError
'function' object has no attribute 'filter'

`

I am guessing I need to add a filter for parameter.id but I haven't found the place

[michaeloliveraz]

Working now.

Silly me, I used the Django web page instead of the api DRF page.

http://localhost:8000/api/parameters/ works fine,