On Fri, Oct 16, 2020 at 6:17 AM Andy922 <zeroseve...@gmail.com> wrote:
> I managed to get this to work, perhaps a suggested improvement is to
> re-write this into an "easier" syntax on the same form as other serializer
> fields.
>
> Model is called "Product"
>
> Length = serializers.ModelField(model_field=Product()._meta.get_field('
> RTF_44534_PB'), source='RTF_44534_PB')
>
>
A quick draft (without error handling) could be:
from django.apps import apps
from rest_framework import serializers
class SModelField(serializers.ModelField):
def __init__(self, *args, **kwargs):
if isinstance(kwargs['model_field'], str):
app_label, model, field = kwargs['model_field'].split(".")
Model = apps.get_model(app_label, model)
kwargs['model_field'] = Model()._meta.get_field(field)
super().__init__(*args, **kwargs)
then you'll "Length =
SModelField(model_field="product_app.Product.RTF_44534_PB")" and should
work :)
> On Friday, October 16, 2020 at 10:50:22 AM UTC+1 Andy922 wrote:
>
>> Hi, I'd like to ask how you amend your field names.
>>
>> I have encountered two "problems" I'd like to ask about.
>>
>> A. Is there a function to quickly re-name model-fields in bulk?
>> B. How do you re-name a foreign-key?
>>
>> I assume that 95% of all users change the field names, as the python
>> convention is different to that of e.g. json, and that internal model
>> representation is normally not very user friendly.
>>
>> I have tried on my own, but soon end up in a conclusion that I am totally
>> wrong about the task, when starting to work with completely re-writing over
>> 100 field names within the serializer when I just want to rename it for the
>> user.
>>
>> e.g. if I have an internal model fieldname called RTF_44534_PB =
>> models.DecimalField(decimal_places=2, max_digits=5, blank=True, null=True
>> )
>>
>> I re-write it as
>>
>> Length = serializers.DecimalField(decimal_places=2, max_digits=5,
>> source="RTF_44534_PB")
>> If it would exist a serializer field on the form:, Length =
>> serializers.ModelField(RTF_44534_PB), would considerable speed up
>> everything and minimize any potential mismatches.
>>
>> This manual method works on all fields but when I come to a foreginkey, I
>> cannot find how to re-name that field in a similar way. How do yo re-name a
>> foreign key?
>>
>> Many thanks
>>
>> Andy
>>
>>
>>
>> --
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