[Django prac][Authentication2] 11. 비밀번호 변경

# accounts > views.py 

인증된 사용자에 대한 접근 제한

is_authenticated

from django.shortcuts import render, redirect
from django.contrib.auth import login as auth_login
from django.contrib.auth import logout as auth_logout
from django.contrib.auth import update_session_auth_hash
from django.contrib.auth.forms import AuthenticationForm, PasswordChangeForm
from .forms import CustomUserChangeForm, CustomUserCreationForm

def login(request):
    if request.user.is_authenticated:
        return redirect('articles:index')

    if request.method == 'POST':
        form = AuthenticationForm(request, request.POST)
        if form.is_valid():
            auth_login(request, form.get_user())
            return redirect('articles:index')
    else:
        form = AuthenticationForm()
    context = {
        'form': form,
    }
    return render(request, 'accounts/login.html', context)
def logout(request):
    auth_logout(request)
    return redirect('articles:index')
def signup(request):
    if request.user.is_authenticated:
        return redirect('articles:index')

    if request.method == 'POST':
        form = CustomUserCreationForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('articles:index')
    else:
        form = CustomUserCreationForm()
    context = {
        'form': form,
    }
    return render(request, 'accounts/signup.html', context)
def delete(request):
    # 삭제하고자하는 User를 조회 할 필요 없다.
    request.user.delete()
    return redirect('articles:index')
def update(request):
    if request.method == 'POST':
        form = CustomUserChangeForm(request.POST, instance=request.user)
        if form.is_valid():
            form.save()
            return redirect('articles:index')
    else:
        form = CustomUserChangeForm(instance=request.user)
    context = {
        'form': form,
    }
    return render(request, 'accounts/update.html', context)
def change_password(request, user_pk):
    if request.method == 'POST':
        form = PasswordChangeForm(request.user, request.POST)
        if form.is_valid():
            user = form.save()
            update_session_auth_hash(request, user)
            return redirect('articles:index')
    else: 
        # PasswordChangeForm은 첫번째 인자 user가 필수이다.
        form = PasswordChangeForm(request.user)
    context = {
        'form': form,
    }
    return render(request, 'accounts/change_password.html', context)