simple-plant-archive-django/plant_catalog/catalog/admin.py

from django.contrib import admin
from .models import Plant, PlantImage

# Inline class for handling images
class PlantImageInline(admin.TabularInline):
    model = PlantImage
    extra = 3  # Display three empty forms for adding new images
    fields = ('image',)  # Only include fields that exist on PlantImage

    can_delete = True  # Allow deletion of images
    max_num = 10  # Limit to 10 images per plant (optional)

@admin.register(Plant)
class PlantAdmin(admin.ModelAdmin):
    list_display = ('id', 'name', 'description', 'get_images', 'buy_price', 'sell_price', 'stock')
    search_fields = ('name','description')  # Add search functionality
    inlines = [PlantImageInline]  # Add inline editing for images

    def save_related(self, request, form, formsets, change):
        super().save_related(request, form, formsets, change)
        # Ensure all related PlantImage objects are saved correctly
        for formset in formsets:
            if hasattr(formset, 'save'):
                formset.save()

    def get_images(self, obj):
        """Display the first image or a placeholder in the list view."""
        images = obj.images.all()  # Access related images via the 'images' related_name
        if images.exists():
            return images[0].image.url  # Show URL of the first image
        return "No Images"

    get_images.short_description = "Images"  # Header for the admin column