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97 lines
2.8 KiB
Python
97 lines
2.8 KiB
Python
from __future__ import unicode_literals
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# from django.utils.translation import ugettext as _
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from django.db import models
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from InvenTree.models import InvenTreeTree
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from part.models import Part
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from django.core.validators import MinValueValidator
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class ProjectCategory(InvenTreeTree):
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""" ProjectCategory provides hierarchical organization of Project objects.
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Each ProjectCategory can contain zero-or-more child categories,
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and in turn can have zero-or-one parent category.
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"""
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class Meta:
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verbose_name = "Project Category"
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verbose_name_plural = "Project Categories"
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@property
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def projects(self):
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return self.project_set.all()
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class Project(models.Model):
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""" A Project takes multiple Part objects.
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A project can output zero-or-more Part objects
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"""
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name = models.CharField(max_length=100)
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description = models.CharField(max_length=500, blank=True)
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category = models.ForeignKey(ProjectCategory, on_delete=models.CASCADE, related_name='projects')
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class Meta:
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unique_together = ('name', 'category')
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def __str__(self):
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return self.name
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class ProjectPart(models.Model):
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""" A project part associates a single part with a project
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The quantity of parts required for a single-run of that project is stored.
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The overage is the number of extra parts that are generally used for a single run.
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"""
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part = models.ForeignKey(Part, on_delete=models.CASCADE)
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project = models.ForeignKey(Project, on_delete=models.CASCADE)
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quantity = models.PositiveIntegerField(default=1, validators=[MinValueValidator(0)])
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class Meta:
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unique_together = ('part', 'project')
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"""
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# TODO - Add overage model fields
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# Overage types
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OVERAGE_PERCENT = 0
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OVERAGE_ABSOLUTE = 1
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OVARAGE_CODES = {
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OVERAGE_PERCENT: _("Percent"),
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OVERAGE_ABSOLUTE: _("Absolute")
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}
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overage = models.FloatField(default=0)
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overage_type = models.PositiveIntegerField(
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default=OVERAGE_ABSOLUTE,
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choices=OVARAGE_CODES.items(),
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validators=[MinValueValidator(0)])
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"""
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# Set if the part is generated by the project,
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# rather than being consumed by the project
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output = models.BooleanField(default=False)
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def __str__(self):
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return "{quan} x {name}".format(
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name=self.part.name,
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quan=self.quantity)
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class ProjectRun(models.Model):
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""" A single run of a particular project.
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Tracks the number of 'units' made in the project.
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Provides functionality to update stock,
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based on both:
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a) Parts used (project inputs)
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b) Parts produced (project outputs)
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"""
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project = models.ForeignKey(Project, on_delete=models.CASCADE)
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quantity = models.PositiveIntegerField(default=1, validators=[MinValueValidator(0)])
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run_date = models.DateField(blank=True, null=True)
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