a lot of changes

core/apps/documents/apps.py

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+from django.apps import AppConfig
+
+
+class DocumentsConfig(AppConfig):
+    name = "core.apps.documents"

core/apps/documents/urls.py

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+from django.urls import path
+
+from core.apps.documents.views.contract import GenerateApiView
+
+urlpatterns = [
+    path('generate-contract-pdf/', GenerateApiView.as_view(), name='generate_contract_pdf'),
+]

core/apps/documents/views/contract.py

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+"""
+PDF generatsiya view — JSON yuborasiz, PDF olasiz.
+Yuborilmagan maydonlar uchun bo'sh string ('') qaytariladi —
+shunda templateda {{ ... }} qoldiqlari ko'rinmaydi.
+"""
+import json
+from django.http import HttpResponse, JsonResponse
+from django.template.loader import render_to_string
+from django.views.decorators.csrf import csrf_exempt
+from django.views.decorators.http import require_http_methods
+from weasyprint import HTML
+from rest_framework import permissions, views
+
+# Kompaniya defaultlari
+COMPANY_DEFAULTS = {
+    'company_name': 'SIFAT BAHOLASH',
+    'membership_number': '122',
+    'membership_date': '01.06.2023',
+    'phone_1': '(71) 278-85-85',
+    'phone_2': '(91) 585-77-77',
+    'phone_3': '(90) 535-99-99',
+    'email': 'sifat.baholash@gmail.com',
+    'bank_account': '2020 8 000 405 309 735 001',
+    'bank_mfo': '00440',
+    'inn': '307 930 412',
+    'director_name': 'Тураев Т.Р.',
+    'appraiser_name': 'Тураев Т.Р.',
+    'appraiser_certificate': '0988',
+    'appraiser_certificate_date': '17.11.2021',
+    'insurance_policy': '19-01-25/0000368-2025',
+    'insurance_start': '30.05.2025',
+    'insurance_end': '29.05.2026',
+    'market_name': 'Сергели автомобил бозори',
+    'city': 'Ташкент',
+    'year': '2026',
+    'total_pages': 21,
+    'valuation_purpose': 'для обеспечения залогом',
+    'valuation_purpose_full': 'определение рыночной стоимости для обеспечения залогом',
+    'adj_bargaining': '-9,00%',
+    'adj_tech': '2,00%',
+    'adj_equipment': '3,00%',
+    'cost_weight': '20',
+    'comp_weight': '80',
+}
+
+# Template ichida ishlatiladigan barcha maydonlar
+ALL_FIELDS = [
+    'report_number', 'report_date', 'valuation_date',
+    'customer_name', 'customer_short_name', 'customer_passport',
+    'owner_name', 'owner_address',
+    'vehicle_brand', 'vehicle_model', 'vehicle_plate',
+    'vehicle_type', 'vehicle_year', 'vehicle_mileage',
+    'vehicle_engine_number', 'vehicle_body_number', 'vehicle_chassis_number',
+    'vehicle_color', 'vehicle_tech_passport',
+    'spec_type', 'spec_seats', 'spec_length', 'spec_width', 'spec_height',
+    'spec_wheelbase', 'spec_clearance',
+    'engine_type', 'engine_volume', 'engine_cylinders',
+    'engine_power', 'engine_torque', 'engine_max_speed',
+    'engine_acceleration', 'transmission',
+    'fuel_tank', 'trunk', 'curb_weight', 'gross_weight',
+    'brakes_front', 'brakes_rear', 'tires',
+    'cost_c0', 'cost_tf', 'cost_lf', 'cost_type_name',
+    'cost_kt', 'cost_kl', 'cost_omega',
+    'cost_wear_andrianov', 'cost_wear_expert', 'cost_wear_avg',
+    'cost_func_wear', 'cost_total_wear', 'cost_capital',
+    'cost_approach_value', 'cost_approach_value_words',
+    'analog_1_source', 'analog_1_year', 'analog_1_mileage', 'analog_1_price',
+    'analog_1_adj_1', 'analog_1_adj_2', 'analog_1_adj_3', 'analog_1_weight',
+    'analog_2_source', 'analog_2_year', 'analog_2_mileage', 'analog_2_price',
+    'analog_2_adj_1', 'analog_2_adj_2', 'analog_2_adj_3', 'analog_2_weight',
+    'analog_3_source', 'analog_3_year', 'analog_3_mileage', 'analog_3_price',
+    'analog_3_adj_1', 'analog_3_adj_2', 'analog_3_adj_3', 'analog_3_weight',
+    'comp_total_usd', 'comp_total_sum', 'comp_total_words',
+    'cost_specific', 'comp_specific', 'weighted_value',
+    'market_value_number', 'market_value_words',
+    'rate_rur', 'rate_usd', 'rate_eur',
+    'exploitation_period', 'retail_price',
+]
+
+
+def _img_or_placeholder(image_url, placeholder_text, alt='', height='200mm'):
+    """Rasm URL bo'lsa <img>, bo'lmasa placeholder qaytaradi"""
+    if image_url:
+        return f'<img src="{image_url}" alt="{alt}" style="max-width:100%;max-height:{height};">'
+    return (
+        f'<div class="image-placeholder" style="height: {height};">'
+        f'{placeholder_text}'
+        f'</div>'
+    )
+
+
+def build_context(data: dict) -> dict:
+    """Templatedagi barcha o'zgaruvchilar uchun qiymat tayyorlaydi"""
+    # 1) Barcha maydonlarni bo'sh string bilan to'ldirish
+    context = {field: '' for field in ALL_FIELDS}
+
+    # 2) Kompaniya defaultlari
+    context.update(COMPANY_DEFAULTS)
+
+    # 3) Foydalanuvchi yuborgan ma'lumotlarni ustiga yozish
+    context.update(data)
+
+    # 4) Rasmlar uchun tayyor HTML
+    context['cover_photo_html'] = _img_or_placeholder(
+        data.get('vehicle_photo'),
+        '[ Фото автомобиля ]',
+        alt='Vehicle',
+        height='50mm',
+    )
+    context['customer_passport_html'] = _img_or_placeholder(
+        data.get('customer_passport_image'),
+        '[ Изображение паспорта заказчика ]',
+        alt='Паспорт заказчика',
+    )
+    context['tech_passport_html'] = _img_or_placeholder(
+        data.get('tech_passport_image'),
+        '[ Изображение технического паспорта ]',
+        alt='Технический паспорт',
+    )
+    context['price_list_html'] = _img_or_placeholder(
+        data.get('price_list_image'),
+        '[ Прайс-лист завода-изготовителя ]',
+        alt='Прайс-лист',
+    )
+
+    # 5) Loop maydonlar
+    if not context.get('analog_screenshots'):
+        context['analog_screenshots'] = [
+            {'page_num': 18, 'image': None},
+            {'page_num': 19, 'image': None},
+            {'page_num': 20, 'image': None},
+        ]
+    if not context.get('vehicle_photos'):
+        context['vehicle_photos'] = []
+
+    return context
+
+
+class GenerateApiView(views.APIView):
+    
+    def post(self, request):
+    
+        try:
+            html_string = render_to_string('report_template.html', context)
+            pdf_bytes = HTML(string=html_string).write_pdf()
+        except Exception as e:
+            return JsonResponse({'error': f'PDF yaratishda xato: {str(e)}'}, status=500)
+    
+        filename = f'otchet_1.pdf'
+    
+        response = HttpResponse(pdf_bytes, content_type='application/pdf')
+        response['Content-Disposition'] = f'attachment; filename="{filename}"'
+        return response