Первая попытка модельки

.ignore/views.py

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+from django.shortcuts import render
+from django.views import View
+from django.http import JsonResponse
+from .models import Part, ProductStructure
+from .filters import PartFilter
+from django.contrib import admin
+from django.db import models
+from django.forms import ModelForm
+from django.utils.html import format_html
+
+class PartList(View):
+    def get(self, request):
+        filter = PartFilter(request.GET, queryset=Part.objects.all())
+        return JsonResponse({
+            'results': [self.part_to_json(part) for part in filter.qs],
+            'filters': filter.filters.items()
+        })
+
+    def part_to_json(self, part):
+        return {
+            'id': part.id,
+            'name': part.name,
+            'decimal_number': part.decimal_number,
+            'type': part.get_type_display(),
+            'thickness': part.thickness,
+            'length': part.length,
+            'weight': part.weight,
+            'cut_length': part.cut_length,
+            'number_of_punches': part.number_of_punches,
+            'slug': part.slug
+        }
+
+class PartAdmin(admin.ModelAdmin):
+    list_display = ('name', 'decimal_number', 'type', 'thickness', 'weight')
+    search_fields = ('name', 'decimal_number')
+    list_filter = ('type',)
+
+    inlines = [
+        ProductionOperationInline
+    ]
+
+class ProductionOperationInline(admin.TabularInline):
+    model = ProductionOperation
+    extra = 1
+
+class ProductionOperation(models.Model):
+    part = models.ForeignKey(Part, on_delete=models.CASCADE, related_name='operations')
+    operation_type = models.CharField(max_length=50, choices=[
+        ('Лазер', 'Лазер'),
+        ('Сварка', 'Сварка'),
+        ('Покраска', 'Покраска'),
+        ('Обработка', 'Обработка'),
+    ])
+    time = models.FloatField()
+    description = models.TextField(blank=True)
+
+    def __str__(self):
+        return f"{self.part.name} - {self.operation_type}"