TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'crud' / 'templates',], # 이 부분을 추가해준다
        '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',
            ],
        },
    },
]

# 일반적인 순서
#1. local apps
#2. 3rd-party apps
#3. django apps
INSTALLED_APPS = [
    'articles', # local (앱)
    'django_extensions', # 3rd-part apps
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

# 언어 설정
LANGUAGE_CODE = 'ko-kr' # 한국어
TIME_ZONE = 'Asia/Seoul' # 서울 시간

from django.contrib import admin
from django.urls import path, include # include 추가로 import

urlpatterns = [
    path('admin/', admin.site.urls),
    path('articles/', include('articles.urls')), # articles.urls를 사용하겠다
]

from django.urls import path # 기본 프로젝트의 urls.py에서 path를 import
from . import views # articles의 views를 import

app_name='articles' # articles:index 처럼 사용할 때 필요
urlpatterns = [
    path('', views.index, name='index'),
    path('new/', views.new, name='new'),
    path('create/', views.create, name='create'),
    path('<int:pk>/detail/', views.detail, name='detail'),
    path('<int:pk>/edit/', views.edit, name='edit'),
    path('<int:pk>/update/', views.update, name='update'),
    path('<int:pk>/delete/', views.delete, name='delete'),
]

from django.shortcuts import render, redirect # redirect를 추가해준다
from .models import Article # models에서 Article이란 class를 import

# Create your views here.
def index(request):
    articles = Article.objects.all()[::-1]
	# articles = Article.objects.order_by('-pk')
    context = {
        'articles': articles # 이 정보를 바로 사용할 수 있다.
    }
    return render(request, 'index.html', context)

def new(request):
    return render(request, 'new.html')

def create(request):
    title = request.GET.get('title')
    content = request.GET.get('content')
    article = Article()
    article.title = title
    article.content = content
    article.save()
    context = {
        'article': article
    }
    return redirect('articles:index')

def detail(request, pk):
    article = Article.objects.get(pk=pk)
    context = {
        'article': article
    }
    return render(request, 'detail.html', context)

def edit(request, pk):
    article = Article.objects.get(pk=pk)
    context = {
        'article': article,
    }
    return render(request, 'edit.html', context)

def update(request, pk):
    article = Article.objects.get(pk=pk)
    title = request.POST.get('title')
    content = request.POST.get('content')
    article.title = title
    article.content = content
    article.save()
    context = {
        'article': article,
    }
    return redirect('articles:detail', article.pk)

def delete(request, pk):
    article = Article.objects.get(pk=pk)
    if request.method == 'POST':
        article.delete()
        return redirect('articles:index')
    else:
        return redirect('articles:detail', article.pk)

from django.db import models

# Create your models here.
class Article(models.Model):
    title = models.CharField(max_length=10)
    content = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)   

    # title을 돌려줌
    def __str__(self):
        return self.title

from django.contrib import admin
from .models import Article

class ArticleAdmin(admin.ModelAdmin): # 나타낼 데이터를 바꿔줌
    list_display = ('pk', 'title', 'content', 'created_at', 'updated_at')

admin.site.register(Article, ArticleAdmin)

<h3>    1. for</h3>{% block content %}	{% for food in foods %}	<p>		{{ forloop.counter0 }}. {{ food }}    	</p>	{% endfor %}    {% for user in user_list %}        <p>{{ user }}</p>    {% empty %}        <p>지금 가입한 유저가 없습니다.</p>    {% endfor %}	<hr>    <h3>        2. if    </h3>    {% if '짜장면' in user_list %}        <p>짜장면엔 고춧가루 넣어야지!</p>    {% endif %}	{% for food in foods %}		{% if foorloop.first %}			<p>짜장면 + 고춧가루</p>		{% if forloop.last %}			<p>{{ food }} + 간장</p>		{% else %}			<p>{{ food }}</p>		{% endif %}	{% endfor %}	<hr>	<h3>    	3. length filter 활용    	</h3>	{% for fruit in fruits %}		{% if fruit|length > 5 %}			<p>이름이 너무 길어요</p>		{% else %}			<p>{{ fruit }}, {{ fruit|length }}</p>		{% endif %}	{% endfor %}	<hr>	<h3>        4. lorem ipsum	</h3>	{% lorem %}	<hr>	{% lorem 3 w %}	<hr>	{% lorem 4 w random %}	<hr>	{% lorem 2 p random %}	<hr>	{% lorem 1 b %}	<h3>    	5. 글자 관련 필터    	</h3>	<p>{{ 'ABC'|lower }}</p>	<p>{{ 'my_sentence'|title }}</p>	<p>{{ foods|random }}</p>	<h3>6. 연산</h3>	<p>{{ 4|add:6}}</p>	<hr>	<h3>7. 날짜 표현</h3>	{% now "DATETIME_FORMAT" %}	{% now "SHORT_DATETIME_FORMAT" %}	{% now "DATE_FORMAT" %}	{% now "SHORT_DATE_FORMAT" %}	<hr>	{% now "Y년 m월 d일 (D) A h:i" %}	{% now "Y" as current_year%}{% endblock %}

# 선택되어있는 것을 삭제article.delete()article.delete()

from django.shortcuts import render, redirectfrom .models import Articledef create(request):    pk = request.GET.get('pk')    title = request.GET.get('title')    content = request.GET.get('content')    article = Article()    article.title = title    article.content = content    article.save()    pk = article.pk    created_at = article.created_at    context = {        'pk': pk,        'title': title,        'content': content,        'created_at': created_at,    }    # return render(request, 'create.html', context)    return redirect('articles:detail', pk) # detail 함수를 다시 실행

from django import formsclass ArticleForm(forms.Form):    REGIONS = [        ('sl', '서울'),        ('dj', '대전'),        ('gj', '광주'),        ('gm', '구미'),    ]        title = forms.CharField(max_length=10)    content = forms.CharField(widget=forms.Textarea)    region = forms.ChoiceField(choices=REGIONS, widget=forms.RadioSelect())    

def new(request):    form = ArticleForm()    context = {        'form': form,    }    return render(request, 'articles/new.html', context)

from django import formsfrom .model import Articleclass ArticleForm(forms.ModelForm):    class Meta:        models = Article        fields = '__all__' # model에서 정의한 속성을 전부 다 보여주겠다#        exclude = ('updated_at',) # 이건 제외하겠다#        fields = ['pk', 'title', 'content'] # 이것만 보여주겠다

def create(request):    if request.method == 'POST':        form = ArticleForm(request)        if form.is_vaild():            article = form.save()            return redirect('articles:index', article.pk)        return redirect('article:index')    else:        form = ArticleForm()        context = {            'form': form,        }        return render(request, 'articles/new.html', context)    # 데이터 가져오려면 instance 사용def update(request, pk):    movie = Movie.objects.get(pk=pk)    if request.method == 'POST':        form = MovieForm(request.POST, request.FILES, instance=movie)        if form.is_valid():            movie = form.save()            return redirect('movies:detail',movie.pk)    else:        form = MovieForm(instance=movie)    context = {        'form':form,        'movie':movie,    }    return render(request, 'movies/form.html', context)

class ArticleForm(forms.ModelForm):    title = forms.CharField(        label = '제목',        widget = forms.TextInput(            attrs = {                'class': 'title',                'placeholder': 'Enter the title',            }        )	    )    content = forms.CharField(        label = '내용',        widget = forms.Textarea(            attrs = {                'class': 'content',                'placeholder': 'Enter the content',                'rows': 5,                'cols': 30,            }        ),        error_messages={            'required': '데이터를 입력해줄래?', # 에러 메시지 바꾸려면        }    )    # bootstrap5 사용시 class에 form-control    poster_path = forms.CharField(        label="영화 포스터 링크",        required=False,        widget=forms.TextInput(            attrs={                'class':'form-control',                # 'class':'poster_path',                'placeholder':'URL을 입력해주세요',            }        )    )    class Meta:        model = Article        fields = '__all__' # model에서 정의한 속성을 전부 다 보여주겠다        # fields = ['pk', 'title', 'content']

from django.shortcuts import render, redirectfrom .models import Articlefrom .forms import ArticleFormfrom django.views.decorators.http import require_safe, require_http_methods, require_POST# index는 GET 방식을 사용하는게 낫다. GET 대신 safe를 사용하는걸 권장# 여기서 POST나 PUT을 사용하면 'method not allowed' 에러 발생@require_safedef index(request):    articles = Article.objects.all()    context = {        'articles': articles,    }    return render(request, 'articles/index.html', context)# GET과 POST를 사용하고 싶다@require_http_methods(['GET', 'POST'])def create(request):    # POST일 때    if request.method == 'POST':        form = ArticleForm(request.POST)        if form.is_valid():            article = form.save()            return redirect('articles:detail', article.pk)    # GET일 때    else:        form = ArticleForm()    context = {        'form': form,    }    return render(request, 'articles/create.html', context)@require_http_methods(['GET', 'POST'])def update(request, pk):    article = Article.objects.get(pk=pk)    if request.method == 'POST':        form = ArticleForm(request.POST, instance=article)        if form.is_valid():            article = form.save()            return redirect('articles:detail', article.pk)    else:        form = ArticleForm(instance=article)    context = {        'form': form,        'article': article,    }    return render(request, 'articles/update.html', context)@require_safedef detail(request, pk):    article = Article.objects.get(pk=pk)    context = {        'article': article    }    return render(request, 'articles/detail.html', context)# 만약 GET으로 처리하려 한다면 '405 error' 발생@require_POSTdef delete(request, pk):    article = Article.objects.get(pk=pk)    article.delete()    return redirect('articles:index')

from django.db import modelsclass Article(models.Model):    title = models.CharField(max_length=10)    content = models.TextField()    image = models.ImageField(blank=True) # null 허용    created_at = models.DateTimeField(auto_now_add=True)    updated_at = models.DateTimeField(auto_now=True)    def __str__(self):        return 'No.{} - {}'.format(self.pk, self.title)

def create(request):    if request.method == 'POST':		form = ArticleForm(request.POST, requests.FILES) # FILES도 request해야 한다        if form.is_valid():            article = form.save()            return redirect('articles:detail', article.pk)    else:        form = ArticleForm()    context = {        'form': form,    }    return render(request, 'articles/create.html', context)

from django import forms
from .models import Movie

class MovieForm(forms.ModelForm):
    title = forms.CharField(
        label="영화 제목",
        widget=forms.TextInput(
            attrs={
                # 'class':'title',
                'class':'form-control',
                'placeholder':'제목을 입력해주세요',

            }
        )
    )
    
    overview = forms.CharField(
        label="영화 개요",
        widget=forms.Textarea(
            attrs={
                'class':'form-control',
                # 'class':'overview',
                'placeholder':'내용을 입력해주세요',
            }
        )
    )

    poster_path = forms.CharField(
        label="영화 포스터 링크",
        required=False,
        widget=forms.TextInput(
            attrs={
                'class':'form-control',
                # 'class':'poster_path',
                'placeholder':'URL을 입력해주세요',
            }
        )
    )

    # poster_file = forms.ImageField(
    #     label="영화 포스터 파일",
    #     # <br>을 제거하기 위한 여정
    #     # widget=forms.FileInput(
    #     #     attrs={
    #     #         'class':'d-flex align-content-start',
    #     #     }
    #     # )
    # )

    class Meta:
        model = Movie
        fields = '__all__'
        def __init__(self, *args, **kwargs):
            super(MovieForm, self).__init__(*args, **kwargs)
            self.fields['file'].required=False

# 가장 아래에 추가MEDIA_ROOT = BASE_DIR / 'media'MEDIA_URL = '/media/'

from django.contrib import adminfrom django.urls import path, includefrom django.conf import settings			# setting를 importfrom django.conf.urls.static import static	# static를 importurlpatterns = [    path('admin/', admin.site.urls),    path('articles/', include('articles.urls')),] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) # static 추가

from django.contrib import adminfrom .models import Articleclass ArticleAdmin(admin.ModelAdmin):    list_display = ['pk', 'title', 'image', 'created_at', 'updated_at']admin.site.register(Article, ArticleAdmin)

INSTALLED_APP = [    ...,    imagekit,    ...,]

from django.db import models 
from imagekit.models import ImageSpecField
from imagekit.processors import ResizeToFill

class Post(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextFIeld()
    image = models.ImageField(blank=True)
    image_thumbnail = ImageSpecField(source='image',
                                    processors=[ResizeToFill(200, 200)],
                                    format='JPEG',
                                     options={'quality':60})
    created_at = models.DateTimeField(auto_now_add=True)
    
post = Post.objects.all()[0]

# 이걸 {{ }} 안에 넣어서 불러올 수 있다.

post.image_thumbnail.url

from django.db import models 
from imagekit.models import ProcessedImageField
from imagekit.processors import ResizeToFill

class Post(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextFIeld()
    # image = models.ImageField(blank=True)
    # upload to는 어떤 폴더에 넣을지
    image = ProcessedImageField(upload_to='images/%Y/%m/%d/', 
                                    processors=[ResizeToFill(500, 500)],
                                    format='JPEG',
                                     options={'quality':100})
    created_at = models.DateTimeField(auto_now_add=True)
    
# post = Post.objects.all()[0]

# 밑줄에 이걸 {{}} 안에 넣어서 불러올 수 있다.

post.image.url

from django.shortcuts import render, redirect, get_object_or_404def detail(request, pk):#    post = Post.objects.get(pk=pk)	post = get_object_or_404(Post, pk=pk)    context = {        'post': post,    }    return render(request, 'posts/detail.html', context)