ExpressionWrapper inside Annotate is not working in django
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3
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from django.db.models import F, ExpressionWrapper
resource_list = Resources.objects.filter(active=True, status__id=STATUS_PUBLIC_ID)
resource_list = resource_list.annotate(rank=ExpressionWrapper(
similar(keywords, F('title')), output_field=DecimalField()
)).filter(rank__gt=0).order_by('-rank').distinct()
def similar(a, b):
print(a, b)
return SequenceMatcher(None, a, b).ratio()
When i run the code above it gives me an error
"TypeError: 'F' object is not iterable"
Resources is the model i have which has a field title
and similar is a function to check the ratio of similarity between 2 strings
django python-3.x
asked Nov 8 at 1:59
Aabhas Singhal
163
add a comment |
up vote
3
down vote
favorite
from django.db.models import F, ExpressionWrapper
resource_list = Resources.objects.filter(active=True, status__id=STATUS_PUBLIC_ID)
resource_list = resource_list.annotate(rank=ExpressionWrapper(
similar(keywords, F('title')), output_field=DecimalField()
)).filter(rank__gt=0).order_by('-rank').distinct()
def similar(a, b):
print(a, b)
return SequenceMatcher(None, a, b).ratio()
When i run the code above it gives me an error
"TypeError: 'F' object is not iterable"
Resources is the model i have which has a field title
and similar is a function to check the ratio of similarity between 2 strings
django python-3.x
asked Nov 8 at 1:59
Aabhas Singhal
163
Can you share the code for similar funciton? Looks like it is expecting an iterable as the second argument.
– Ozgur Akcali
Nov 8 at 7:20
The thing is, to the similar function it doesn't pass the value of F('title') it passes it as F(title)
– Aabhas Singhal
Nov 8 at 14:27
add a comment |
up vote
3
down vote
favorite
up vote
3
down vote
favorite
from django.db.models import F, ExpressionWrapper
resource_list = Resources.objects.filter(active=True, status__id=STATUS_PUBLIC_ID)
resource_list = resource_list.annotate(rank=ExpressionWrapper(
similar(keywords, F('title')), output_field=DecimalField()
)).filter(rank__gt=0).order_by('-rank').distinct()
def similar(a, b):
print(a, b)
return SequenceMatcher(None, a, b).ratio()
When i run the code above it gives me an error
"TypeError: 'F' object is not iterable"
Resources is the model i have which has a field title
and similar is a function to check the ratio of similarity between 2 strings
django python-3.x
asked Nov 8 at 1:59
Aabhas Singhal
163
from django.db.models import F, ExpressionWrapper
resource_list = Resources.objects.filter(active=True, status__id=STATUS_PUBLIC_ID)
resource_list = resource_list.annotate(rank=ExpressionWrapper(
similar(keywords, F('title')), output_field=DecimalField()
)).filter(rank__gt=0).order_by('-rank').distinct()
def similar(a, b):
print(a, b)
return SequenceMatcher(None, a, b).ratio()
When i run the code above it gives me an error
"TypeError: 'F' object is not iterable"
Resources is the model i have which has a field title
and similar is a function to check the ratio of similarity between 2 strings
django python-3.x
django python-3.x
asked Nov 8 at 1:59
Aabhas Singhal
163
asked Nov 8 at 1:59
Aabhas Singhal
163
edited Nov 8 at 14:28
asked Nov 8 at 1:59
Aabhas Singhal
163
asked Nov 8 at 1:59
Aabhas Singhal
163
asked Nov 8 at 1:59
Aabhas Singhal
163
163
Can you share the code for similar funciton? Looks like it is expecting an iterable as the second argument.
– Ozgur Akcali
Nov 8 at 7:20
The thing is, to the similar function it doesn't pass the value of F('title') it passes it as F(title)
– Aabhas Singhal
Nov 8 at 14:27
add a comment |
Can you share the code for similar funciton? Looks like it is expecting an iterable as the second argument.
– Ozgur Akcali
Nov 8 at 7:20
The thing is, to the similar function it doesn't pass the value of F('title') it passes it as F(title)
– Aabhas Singhal
Nov 8 at 14:27
Can you share the code for similar funciton? Looks like it is expecting an iterable as the second argument.
– Ozgur Akcali
Nov 8 at 7:20
Can you share the code for similar funciton? Looks like it is expecting an iterable as the second argument.
– Ozgur Akcali
Nov 8 at 7:20
The thing is, to the similar function it doesn't pass the value of F('title') it passes it as F(title)
– Aabhas Singhal
Nov 8 at 14:27
The thing is, to the similar function it doesn't pass the value of F('title') it passes it as F(title)
– Aabhas Singhal
Nov 8 at 14:27
add a comment |
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Can you share the code for similar funciton? Looks like it is expecting an iterable as the second argument.
– Ozgur Akcali
Nov 8 at 7:20
The thing is, to the similar function it doesn't pass the value of F('title') it passes it as F(title)
– Aabhas Singhal
Nov 8 at 14:27