first commit

invoices/admin.py

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+from django.contrib import admin
+from simple_history.admin import SimpleHistoryAdmin
+from django.utils.html import format_html
+from django.utils.safestring import mark_safe
+from .models import Item, Quote, QuoteItem, Invoice, InvoiceItem, Payment
+
+@admin.register(Item)
+class ItemAdmin(SimpleHistoryAdmin):
+    list_display = ['name', 'unit_price', 'default_quantity', 'is_default_in_quotes', 'is_active', 'created_by']
+    list_filter = ['is_default_in_quotes', 'is_active', 'created_by']
+    search_fields = ['name', 'description']
+    prepopulated_fields = {'slug': ('name',)}
+    readonly_fields = ['deleted_at', 'created', 'updated']
+
+class QuoteItemInline(admin.TabularInline):
+    model = QuoteItem
+    extra = 1
+    fields = ['item', 'quantity', 'unit_price', 'total_price', 'notes']
+
+@admin.register(Quote)
+class QuoteAdmin(SimpleHistoryAdmin):
+    list_display = ['name', 'process_instance', 'customer', 'status_display', 'total_amount', 'final_amount', 'valid_until', 'created_by']
+    list_filter = ['status', 'created', 'valid_until', 'process_instance__process']
+    search_fields = ['name', 'customer__username', 'customer__first_name', 'customer__last_name', 'notes']
+    prepopulated_fields = {'slug': ('name',)}
+    readonly_fields = ['deleted_at', 'created', 'updated', 'total_amount', 'discount_amount', 'final_amount']
+    inlines = [QuoteItemInline]
+    ordering = ['-created']
+
+    def status_display(self, obj):
+        return mark_safe(obj.get_status_display_with_color())
+    status_display.short_description = "وضعیت"
+
+class InvoiceItemInline(admin.TabularInline):
+    model = InvoiceItem
+    extra = 1
+    fields = ['item', 'quantity', 'unit_price', 'total_price', 'notes']
+
+class PaymentInline(admin.TabularInline):
+    model = Payment
+    extra = 1
+    fields = ['amount', 'payment_method', 'reference_number', 'payment_date', 'notes']
+    readonly_fields = ['created_by', 'created']
+
+@admin.register(Invoice)
+class InvoiceAdmin(SimpleHistoryAdmin):
+    list_display = ['name', 'process_instance', 'customer', 'status_display', 'final_amount', 'paid_amount', 'remaining_amount', 'due_date']
+    list_filter = ['status', 'created', 'due_date', 'process_instance__process']
+    search_fields = ['name', 'customer__username', 'customer__first_name', 'customer__last_name', 'notes']
+    prepopulated_fields = {'slug': ('name',)}
+    readonly_fields = ['deleted_at', 'created', 'updated', 'total_amount', 'discount_amount', 'final_amount', 'paid_amount', 'remaining_amount']
+    inlines = [InvoiceItemInline, PaymentInline]
+    ordering = ['-created']
+
+    def status_display(self, obj):
+        return mark_safe(obj.get_status_display_with_color())
+    status_display.short_description = "وضعیت"
+
+@admin.register(Payment)
+class PaymentAdmin(SimpleHistoryAdmin):
+    list_display = ['invoice', 'amount', 'payment_method', 'payment_date', 'created_by']
+    list_filter = ['payment_method', 'payment_date', 'created_by']
+    search_fields = ['invoice__name', 'reference_number', 'notes']
+    readonly_fields = ['created']
+    ordering = ['-payment_date']