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61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
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from __future__ import absolute_import
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from functools import partial
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from django.db.models import Model
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from .comparison import _compare_mapping, register
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from . import compare as base_compare
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def instance_fields(instance):
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opts = instance._meta
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for name in (
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'concrete_fields',
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'virtual_fields',
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'private_fields',
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):
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fields = getattr(opts, name, None)
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if fields:
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for field in fields:
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yield field
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def model_to_dict(instance, exclude, include_not_editable):
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data = {}
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for f in instance_fields(instance):
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if f.name in exclude:
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continue
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if not getattr(f, 'editable', False) and not include_not_editable:
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continue
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data[f.name] = f.value_from_object(instance)
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return data
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def compare_model(x, y, context):
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"""
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Returns an informative string describing the differences between the two
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supplied Django model instances. The way in which this comparison is
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performed can be controlled using the following parameters:
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:param ignore_fields:
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A sequence of fields to ignore during comparison, most commonly
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set to ``['id']``. By default, no fields are ignored.
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:param non_editable_fields:
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If `True`, then fields with ``editable=False`` will be included in the
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comparison. By default, these fields are ignored.
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"""
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ignore_fields = context.get_option('ignore_fields', set())
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non_editable_fields= context.get_option('non_editable_fields', False)
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args = []
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for obj in x, y:
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args.append(model_to_dict(obj, ignore_fields, non_editable_fields))
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args.append(context)
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args.append(x)
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return _compare_mapping(*args)
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register(Model, compare_model)
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compare = partial(base_compare, ignore_eq=True)
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