def display_merge_animal_length_row(destination, source, merge_form, form_field_name, length_field_name, sigdigs_field_name):
destination_value = [None, None]
source_value = [None, None]
in_source = [False, False]
differ = False
destination_cell = [None, None]
source_cell = [None, None]
# the source may not have all the fields of the destination
for i, f in enumerate((length_field_name, sigdigs_field_name)):
destination_value[i] = getattr(destination, f)
try:
source_value[i] = getattr(source, f)
in_source[i] = True
except AttributeError:
pass
if in_source[i]:
differ |= not bool(destination_value[i] == source_value[i])
destination_cell[0] = display_animal_length_cell(destination, length_field_name, destination_value[1])
if in_source[0]:
source_cell[0] = display_animal_length_cell(source, length_field_name, source_value[1])
else:
source_cell[0] = mark_safe(u'<td class="added"><i>no field</i></td>')
destination_cell[1] = display_cell(destination, f)
if in_source[1]:
source_cell[1] = display_cell(source, f)
else:
source_cell[1] = mark_safe(u'<td class="added"><i>no field</i></td>')
return render_to_string(
'display_animal_length_merge_row.html',
{
'differ': differ,
'in_source': in_source,
'destination_cell': destination_cell,
'source_cell': source_cell,
'field': merge_form[form_field_name],
},
)
def display_merge_row(destination, source, merge_form, field_name, cell_template_name=None, cell_kwargs={}, template='display_merge_row.html'):
if isinstance(destination._meta.get_field(field_name), models.ManyToManyField):
# comparing m2m fields is a little more complicated
# unsaved instances may not have PKs yet
if not destination.pk:
destination_value = tuple()
else:
destination_value = getattr(destination, field_name)
else:
destination_value = getattr(destination, field_name)
# the source may not have all the fields of the destination
try:
if isinstance(source._meta.get_field(field_name), models.ManyToManyField):
# comparing m2m fields is a little more complicated
# unsaved instances may not have PKs yet
if not source.pk:
source_value = tuple()
else:
source_value = getattr(source, field_name)
else:
source_value = getattr(source, field_name)
in_source = True
except models.fields.FieldDoesNotExist:
in_source = False
if in_source:
if isinstance(destination_value, models.Manager):
def _pks_set(manager):
return set(manager.values_list('pk', flat=True))
if isinstance(source_value, models.Manager):
differ = not bool(_pks_set(destination_value) == _pks_set(source_value))
else:
differ = not bool(_pks_set(destination_value) == set(source_value))
else:
differ = not bool(destination_value == source_value)
else:
differ = None
if isinstance(cell_kwargs, tuple):
destination_kwargs, source_kwargs = cell_kwargs
else:
destination_kwargs, source_kwargs = map(copy, (cell_kwargs, cell_kwargs))
destination_cell = display_cell(destination, field_name, cell_template_name, **destination_kwargs)
if in_source:
source_cell = display_cell(source, field_name, cell_template_name, **source_kwargs)
else:
source_cell = mark_safe(u'<td class="added"><i>no field</i></td>')
return render_to_string(
template,
{
'differ': differ,
'in_source': in_source,
'destination_cell': destination_cell,
'source_cell': source_cell,
'field': merge_form[field_name],
},
)
