deb03efaed
施肥計画で使用中の肥料を削除すると計画エントリも消えていた問題を修正。 PROTECT にすることで、使用中の肥料は削除不可となり フロントエンドのエラーバナーで理由が表示される。 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
70 lines
2.5 KiB
Python
70 lines
2.5 KiB
Python
from django.db import models
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class Fertilizer(models.Model):
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name = models.CharField(max_length=100, unique=True, verbose_name='肥料名')
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maker = models.CharField(max_length=100, blank=True, null=True, verbose_name='メーカー')
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capacity_kg = models.DecimalField(
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max_digits=8, decimal_places=3, blank=True, null=True, verbose_name='1袋重量(kg)'
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)
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nitrogen_pct = models.DecimalField(
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max_digits=5, decimal_places=2, blank=True, null=True, verbose_name='窒素含有率(%)'
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)
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phosphorus_pct = models.DecimalField(
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max_digits=5, decimal_places=2, blank=True, null=True, verbose_name='リン酸含有率(%)'
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)
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potassium_pct = models.DecimalField(
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max_digits=5, decimal_places=2, blank=True, null=True, verbose_name='カリ含有率(%)'
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)
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notes = models.TextField(blank=True, null=True, verbose_name='備考')
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class Meta:
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verbose_name = '肥料マスタ'
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verbose_name_plural = '肥料マスタ'
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ordering = ['name']
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def __str__(self):
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return self.name
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class FertilizationPlan(models.Model):
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name = models.CharField(max_length=200, verbose_name='計画名')
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year = models.IntegerField(verbose_name='年度')
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variety = models.ForeignKey(
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'plans.Variety', on_delete=models.PROTECT,
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related_name='fertilization_plans', verbose_name='品種'
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)
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created_at = models.DateTimeField(auto_now_add=True)
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updated_at = models.DateTimeField(auto_now=True)
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class Meta:
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verbose_name = '施肥計画'
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verbose_name_plural = '施肥計画'
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ordering = ['-year', 'variety']
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def __str__(self):
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return f"{self.year} {self.name}"
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class FertilizationEntry(models.Model):
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"""圃場 × 肥料 × 袋数 の中間テーブル"""
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plan = models.ForeignKey(
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FertilizationPlan, on_delete=models.CASCADE, related_name='entries'
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)
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field = models.ForeignKey(
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'fields.Field', on_delete=models.CASCADE, verbose_name='圃場'
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)
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fertilizer = models.ForeignKey(
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Fertilizer, on_delete=models.PROTECT, verbose_name='肥料'
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)
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bags = models.DecimalField(max_digits=8, decimal_places=2, verbose_name='袋数')
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class Meta:
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verbose_name = '施肥エントリ'
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verbose_name_plural = '施肥エントリ'
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unique_together = [['plan', 'field', 'fertilizer']]
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ordering = ['field', 'fertilizer']
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def __str__(self):
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return f"{self.plan} / {self.field} / {self.fertilizer}: {self.bags}袋"
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