diff --git a/.DS_Store b/.DS_Store
index 272c880..b29301b 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git "a/11\354\243\274\354\260\250_Django(4)/week11/myblog/.DS_Store" "b/11\354\243\274\354\260\250_Django(4)/week11/myblog/.DS_Store"
new file mode 100644
index 0000000..8b48058
Binary files /dev/null and "b/11\354\243\274\354\260\250_Django(4)/week11/myblog/.DS_Store" differ
diff --git a/HW12/apiproject/apiproject/__init__.py b/HW12/apiproject/apiproject/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/HW12/apiproject/apiproject/asgi.py b/HW12/apiproject/apiproject/asgi.py
new file mode 100644
index 0000000..c3fb0c2
--- /dev/null
+++ b/HW12/apiproject/apiproject/asgi.py
@@ -0,0 +1,16 @@
+"""
+ASGI config for apiproject project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.0/howto/deployment/asgi/
+"""
+
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'apiproject.settings')
+
+application = get_asgi_application()
diff --git a/HW12/apiproject/apiproject/settings.py b/HW12/apiproject/apiproject/settings.py
new file mode 100644
index 0000000..669099e
--- /dev/null
+++ b/HW12/apiproject/apiproject/settings.py
@@ -0,0 +1,126 @@
+"""
+Django settings for apiproject project.
+
+Generated by 'django-admin startproject' using Django 4.0.6.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.0/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/4.0/ref/settings/
+"""
+
+from pathlib import Path
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = Path(__file__).resolve().parent.parent
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/4.0/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'django-insecure-vtlx_=#j2b_jdo*7kr3koq87gy@uecjis2l=%iuf7bzs^znfk5'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'blogapp',
+    'rest_framework',
+    'commentapp',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'apiproject.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'apiproject.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/4.0/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': BASE_DIR / 'db.sqlite3',
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/4.0/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/4.0/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'Asia/Seoul'
+
+USE_I18N = True
+
+USE_TZ = False
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/4.0/howto/static-files/
+
+STATIC_URL = 'static/'
+
+# Default primary key field type
+# https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field
+
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
diff --git a/HW12/apiproject/apiproject/urls.py b/HW12/apiproject/apiproject/urls.py
new file mode 100644
index 0000000..d9e319f
--- /dev/null
+++ b/HW12/apiproject/apiproject/urls.py
@@ -0,0 +1,23 @@
+"""apiproject URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/4.0/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import path, include
+
+urlpatterns = [
+    path('admin/', admin.site.urls),
+    path('blog/', include('blogapp.urls')),
+    path('comment/', include('commentapp.urls')),
+]
diff --git a/HW12/apiproject/apiproject/wsgi.py b/HW12/apiproject/apiproject/wsgi.py
new file mode 100644
index 0000000..ca6d0c8
--- /dev/null
+++ b/HW12/apiproject/apiproject/wsgi.py
@@ -0,0 +1,16 @@
+"""
+WSGI config for apiproject project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.0/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'apiproject.settings')
+
+application = get_wsgi_application()
diff --git a/HW12/apiproject/blogapp/__init__.py b/HW12/apiproject/blogapp/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/HW12/apiproject/blogapp/admin.py b/HW12/apiproject/blogapp/admin.py
new file mode 100644
index 0000000..c40b8e4
--- /dev/null
+++ b/HW12/apiproject/blogapp/admin.py
@@ -0,0 +1,5 @@
+from django.contrib import admin
+from blogapp.models import Blog
+
+# Register your models here.
+admin.site.register(Blog)
\ No newline at end of file
diff --git a/HW12/apiproject/blogapp/apps.py b/HW12/apiproject/blogapp/apps.py
new file mode 100644
index 0000000..d50a428
--- /dev/null
+++ b/HW12/apiproject/blogapp/apps.py
@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class BlogappConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'blogapp'
diff --git a/HW12/apiproject/blogapp/migrations/0001_initial.py b/HW12/apiproject/blogapp/migrations/0001_initial.py
new file mode 100644
index 0000000..fab6720
--- /dev/null
+++ b/HW12/apiproject/blogapp/migrations/0001_initial.py
@@ -0,0 +1,23 @@
+# Generated by Django 4.0.6 on 2022-07-25 14:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Blog',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=50)),
+                ('date', models.DateTimeField(auto_now_add=True)),
+                ('body', models.TextField()),
+            ],
+        ),
+    ]
diff --git a/HW12/apiproject/blogapp/migrations/__init__.py b/HW12/apiproject/blogapp/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/HW12/apiproject/blogapp/models.py b/HW12/apiproject/blogapp/models.py
new file mode 100644
index 0000000..2241aa5
--- /dev/null
+++ b/HW12/apiproject/blogapp/models.py
@@ -0,0 +1,13 @@
+from django.db import models
+
+# Create your models here.
+class Blog(models.Model):
+    title = models.CharField(max_length=50)
+    date = models.DateTimeField(auto_now_add=True)
+    body = models.TextField()
+
+    def __str__(self):
+        return self.title
+
+    def summary(self):
+        return self.body[:30]
diff --git a/HW12/apiproject/blogapp/serializers.py b/HW12/apiproject/blogapp/serializers.py
new file mode 100644
index 0000000..45be6c8
--- /dev/null
+++ b/HW12/apiproject/blogapp/serializers.py
@@ -0,0 +1,12 @@
+from rest_framework import serializers
+from blogapp.models import Blog
+
+class BlogSerializer(serializers.ModelSerializer): # 글 작성
+    class Meta:
+        model = Blog
+        fields = ('id', 'title', 'date', 'body')
+
+class BlogListSerializer(serializers.ModelSerializer): # 글 목록 조회
+    class Meta:
+        model = Blog
+        fields = ('id', 'title', 'date', 'summary')
\ No newline at end of file
diff --git a/HW12/apiproject/blogapp/tests.py b/HW12/apiproject/blogapp/tests.py
new file mode 100644
index 0000000..7ce503c
--- /dev/null
+++ b/HW12/apiproject/blogapp/tests.py
@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.
diff --git a/HW12/apiproject/blogapp/urls.py b/HW12/apiproject/blogapp/urls.py
new file mode 100644
index 0000000..9e8e4d1
--- /dev/null
+++ b/HW12/apiproject/blogapp/urls.py
@@ -0,0 +1,7 @@
+from django.urls import path
+from blogapp.views import BlogList, BlogDetail
+
+urlpatterns = [
+    path('main/', BlogList.as_view()),
+    path('main/<int:pk>', BlogDetail.as_view()),
+]
diff --git a/HW12/apiproject/blogapp/views.py b/HW12/apiproject/blogapp/views.py
new file mode 100644
index 0000000..e4ed551
--- /dev/null
+++ b/HW12/apiproject/blogapp/views.py
@@ -0,0 +1,48 @@
+from rest_framework import status
+from rest_framework.views import APIView
+from rest_framework.response import Response
+
+from .serializers import BlogSerializer, BlogListSerializer
+from .models import Blog
+
+from django.http import Http404
+
+# Create your views here.
+class BlogList(APIView):
+    def get(self, request): # 글 목록 조회하는 경우
+        blogs = Blog.objects.all()
+
+        serializer = BlogListSerializer(blogs, many=True) # 다수의 쿼리셋 전달 위해서 many = True
+        return Response(serializer.data)
+    
+    def post(self, request): # 글 작성하는 경우
+        serializer = BlogSerializer(data = request.data)
+        if serializer.is_valid():
+            serializer.save()
+            return Response(serializer.data, status=status.HTTP_201_CREATED)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+class BlogDetail(APIView):
+    def get_object(self, pk): # blog 객체 가져오기
+        try:
+            return Blog.objects.get(pk=pk)
+        except Blog.DoesNotExist:
+            raise Http404
+    
+    def get(self, request, pk): # blog 상세조회
+        blog = self.get_object(pk)
+        serializer = BlogSerializer(blog)
+        return Response(serializer.data)
+    
+    def put(self, request, pk): # blog 수정
+        blog = self.get_object(pk)
+        serializer = BlogSerializer(blog, data=request.data)
+        if serializer.is_valid():
+            serializer.save()
+            return Response(serializer.data, status=status.HTTP_200_OK)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    
+    def delete(self, request, pk):
+        blog = self.get_object(pk)
+        blog.delete()
+        return Response(status=status.HTTP_204_NO_CONTENT)
diff --git a/HW12/apiproject/commentapp/__init__.py b/HW12/apiproject/commentapp/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/HW12/apiproject/commentapp/admin.py b/HW12/apiproject/commentapp/admin.py
new file mode 100644
index 0000000..b992b77
--- /dev/null
+++ b/HW12/apiproject/commentapp/admin.py
@@ -0,0 +1,5 @@
+from django.contrib import admin
+from commentapp.models import Comment
+
+# Register your models here.
+admin.site.register(Comment)
\ No newline at end of file
diff --git a/HW12/apiproject/commentapp/apps.py b/HW12/apiproject/commentapp/apps.py
new file mode 100644
index 0000000..f03b6eb
--- /dev/null
+++ b/HW12/apiproject/commentapp/apps.py
@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class CommentappConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'commentapp'
diff --git a/HW12/apiproject/commentapp/migrations/0001_initial.py b/HW12/apiproject/commentapp/migrations/0001_initial.py
new file mode 100644
index 0000000..1c346a7
--- /dev/null
+++ b/HW12/apiproject/commentapp/migrations/0001_initial.py
@@ -0,0 +1,26 @@
+# Generated by Django 4.0.6 on 2022-07-25 14:32
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('blogapp', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Comment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('content', models.CharField(max_length=200)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('blog', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='blogapp.blog')),
+            ],
+        ),
+    ]
diff --git a/HW12/apiproject/commentapp/migrations/__init__.py b/HW12/apiproject/commentapp/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/HW12/apiproject/commentapp/models.py b/HW12/apiproject/commentapp/models.py
new file mode 100644
index 0000000..d5d0442
--- /dev/null
+++ b/HW12/apiproject/commentapp/models.py
@@ -0,0 +1,13 @@
+from django.db import models
+
+from blogapp.models import Blog
+
+# Create your models here.
+class Comment(models.Model):
+    blog = models.ForeignKey(Blog, on_delete=models.CASCADE)
+    content = models.CharField(max_length=200)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now = True)
+
+    def __str__(self):
+        return self.content
diff --git a/HW12/apiproject/commentapp/serializers.py b/HW12/apiproject/commentapp/serializers.py
new file mode 100644
index 0000000..f45faa1
--- /dev/null
+++ b/HW12/apiproject/commentapp/serializers.py
@@ -0,0 +1,12 @@
+from rest_framework import serializers
+from commentapp.models import Comment
+
+class CommentSerializer(serializers.ModelSerializer): # 댓글 작성
+    class Meta:
+        model = Comment
+        fields = ('id', 'blog', 'content')
+
+class CommentListSerializer(serializers.ModelSerializer): # 댓글 조회
+    class Meta:
+        model = Comment
+        fields = ('id', 'blog', 'content', 'created_at')
\ No newline at end of file
diff --git a/HW12/apiproject/commentapp/tests.py b/HW12/apiproject/commentapp/tests.py
new file mode 100644
index 0000000..7ce503c
--- /dev/null
+++ b/HW12/apiproject/commentapp/tests.py
@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.
diff --git a/HW12/apiproject/commentapp/urls.py b/HW12/apiproject/commentapp/urls.py
new file mode 100644
index 0000000..f9db56c
--- /dev/null
+++ b/HW12/apiproject/commentapp/urls.py
@@ -0,0 +1,8 @@
+from django.urls import path
+from commentapp.views import CommentList, CommentDetail, BlogCommentList
+
+urlpatterns = [
+    path('main/', CommentList.as_view()),
+    path('blog/<int:pk>', BlogCommentList.as_view()),
+    path('main/<int:pk>', CommentDetail.as_view()),
+]
diff --git a/HW12/apiproject/commentapp/views.py b/HW12/apiproject/commentapp/views.py
new file mode 100644
index 0000000..cf7a87c
--- /dev/null
+++ b/HW12/apiproject/commentapp/views.py
@@ -0,0 +1,58 @@
+from rest_framework import status
+from rest_framework.views import APIView
+from rest_framework.response import Response
+
+from .serializers import CommentSerializer, CommentListSerializer
+from .models import Comment
+
+from django.http import Http404
+
+# Create your views here.
+class CommentList(APIView):
+    def get(self, request): # 모든 댓글 목록 조회하는 경우
+        comments = Comment.objects.filter()
+
+        serializer = CommentListSerializer(comments, many=True) # 다수의 쿼리셋 전달 위해서 many = True
+        return Response(serializer.data)
+    
+    def post(self, request): # 댓글 작성하는 경우
+        serializer = CommentSerializer(data = request.data)
+        if serializer.is_valid():
+            serializer.save()
+            return Response(serializer.data, status=status.HTTP_201_CREATED)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+class BlogCommentList(APIView):
+    def get(self, request, pk): # 모든 댓글 목록 조회하는 경우
+        
+        comments = Comment.objects.filter(
+           blog = pk
+        )
+        serializer = CommentListSerializer(comments, many=True) # 다수의 쿼리셋 전달 위해서 many = True
+        return Response(serializer.data)
+    
+
+class CommentDetail(APIView):
+    def get_object(self, pk): # comment 객체 가져오기
+        try:
+            return Comment.objects.get(pk=pk)
+        except Comment.DoesNotExist:
+            raise Http404
+    
+    def get(self, request, pk): # comment 상세조회
+        comment = self.get_object(pk)
+        serializer = CommentSerializer(comment)
+        return Response(serializer.data)
+    
+    def put(self, request, pk): # comment 수정
+        comment = self.get_object(pk)
+        serializer = CommentSerializer(comment, data=request.data)
+        if serializer.is_valid():
+            serializer.save()
+            return Response(serializer.data, status=status.HTTP_200_OK)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    
+    def delete(self, request, pk):
+        comment = self.get_object(pk)
+        comment.delete()
+        return Response(status=status.HTTP_204_NO_CONTENT)
diff --git a/HW12/apiproject/manage.py b/HW12/apiproject/manage.py
new file mode 100755
index 0000000..1d1d514
--- /dev/null
+++ b/HW12/apiproject/manage.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'apiproject.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()