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Merge remote-tracking branch 'inventree/master' into build-fixes
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@ -1356,6 +1356,32 @@ class Part(MPTTModel):
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return self.get_descendants(include_self=False)
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def get_related_parts(self):
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""" Return list of tuples for all related parts:
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- first value is PartRelated object
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- second value is matching Part object
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"""
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related_parts = []
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related_parts_1 = self.related_parts_1.filter(part_1__id=self.pk)
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related_parts_2 = self.related_parts_2.filter(part_2__id=self.pk)
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for related_part in related_parts_1:
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# Add to related parts list
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related_parts.append((related_part, related_part.part_2))
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for related_part in related_parts_2:
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# Add to related parts list
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related_parts.append((related_part, related_part.part_1))
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return related_parts
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@property
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def related_count(self):
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return len(self.get_related_parts())
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def attach_file(instance, filename):
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""" Function for storing a file for a PartAttachment
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@ -1835,3 +1861,71 @@ class BomItem(models.Model):
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pmax = decimal2string(pmax)
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return "{pmin} to {pmax}".format(pmin=pmin, pmax=pmax)
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class PartRelated(models.Model):
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""" Store and handle related parts (eg. mating connector, crimps, etc.) """
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part_1 = models.ForeignKey(Part, related_name='related_parts_1',
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on_delete=models.DO_NOTHING)
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part_2 = models.ForeignKey(Part, related_name='related_parts_2',
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on_delete=models.DO_NOTHING,
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help_text=_('Select Related Part'))
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def __str__(self):
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return f'{self.part_1} <--> {self.part_2}'
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def validate(self, part_1, part_2):
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''' Validate that the two parts relationship is unique '''
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validate = True
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parts = Part.objects.all()
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related_parts = PartRelated.objects.all()
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# Check if part exist and there are not the same part
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if (part_1 in parts and part_2 in parts) and (part_1.pk != part_2.pk):
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# Check if relation exists already
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for relation in related_parts:
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if (part_1 == relation.part_1 and part_2 == relation.part_2) \
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or (part_1 == relation.part_2 and part_2 == relation.part_1):
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validate = False
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break
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else:
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validate = False
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return validate
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def clean(self):
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''' Overwrite clean method to check that relation is unique '''
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validate = self.validate(self.part_1, self.part_2)
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if not validate:
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error_message = _('Error creating relationship: check that '
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'the part is not related to itself '
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'and that the relationship is unique')
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raise ValidationError(error_message)
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def create_relationship(self, part_1, part_2):
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''' Create relationship between two parts '''
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validate = self.validate(part_1, part_2)
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if validate:
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# Add relationship
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self.part_1 = part_1
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self.part_2 = part_2
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self.save()
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return validate
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@classmethod
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def create(cls, part_1, part_2):
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''' Create PartRelated object and relationship between two parts '''
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related_part = cls()
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related_part.create_relationship(part_1, part_2)
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return related_part
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