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[Python] 간단한 CRUD 구현 본문

Programming/Python

[Python] 간단한 CRUD 구현

HCD 2023. 5. 9. 16:10 
from django.shortcuts import render,HttpResponse, redirect
import random
from django.views.decorators.csrf import csrf_exempt


nextId = 4
topics = [
    {'id':1, 'title':'routing', 'body':'Routing is ...'},
    {'id':2, 'title':'view', 'body':'view is ...'},
    {'id':3, 'title':'Model', 'body':'Model is ...'}
]

def HTMLTemplate(articleTag, id=None):
    global topics
    contextUI = ''
    if id != None:
        contextUI = f'''
            <li>
                <form action="/delete/" method="post">
                    <input type="hidden" name="id" value={id}>
                    <input type="submit" value="delete">
                </form>
            </li>
            <li><a href="/update/{id}">update</a></li>
        '''
    ol = ''
    for topic in topics:
        ol += f'<li><a href="/read/{topic["id"]}">{topic["title"]}</a></li>'
    return f'''
    <html>
    <body>
        <h1><a href="/">Django</a></h1>
        <ol>
           {ol}
        </ol>
       {articleTag}
       <ul>
        <li><a href="/create">create</a></li>
        {contextUI}
       </ul>
    </body>
    </html>                   
    '''


def index(request):
    article = '''
    <h2>Welcome</h2>
    Hello, Django
    '''
    return HttpResponse(HTMLTemplate(article))
   
    
def read(request, id):
    global topics
    article = ""
    for topic in topics:
        if topic["id"] == int(id):
            article = f'<h2>{topic["title"]}</h2>{topic["body"]}'
    return HttpResponse(HTMLTemplate(article, id))    

@csrf_exempt
def create(request):
    global nextId
    if request.method == "GET":
        article='''
            <form action="/create/" method="post">
                <p><input type="text" name="title" placeholder="title"></p>
                <p><textarea name="body" placeholder="body"></textarea></p>
                <p><input type="submit"></p>
            </form>
        '''
        return HttpResponse(HTMLTemplate(article))
    elif request.method == "POST":
        title = request.POST["title"]
        body = request.POST["body"]
        newTopic = {"id" : nextId, "title" : title, "body" : body}
        topics.append(newTopic)
        url = '/read/' + str(nextId)
        nextId = nextId + 1
        return redirect(url)
    
@csrf_exempt
def update(request, id):
    global topics
    if request.method == "GET":
        for topic in topics:
            if topic["id"] == int(id):
                selectedTopic = {
                    "title" : topic['title'],
                    "body" : topic['body']
                }
        article = f'''
            <form action="/update/{id}/" method="post">
                    <p><input type="text" name="title" value={selectedTopic["title"]}></p>
                    <p><textarea name="body" placeholder="body">{selectedTopic["body"]}</textarea></p>
                    <input type="submit" value="update">
                </form>
        '''
        return HttpResponse(HTMLTemplate(article, id))
    elif request.method == "POST":
        title = request.POST["title"]
        body = request.POST["body"]
        for topic in topics:
            if topic['id'] == int(id):
                topic['title'] = title
                topic['body'] = body
            
        return redirect(f"/read/{id}")
        

@csrf_exempt
def delete(request):
    global topics
    if request.method == "POST":
        id = request.POST['id']
        newTopics = []
        for topic in topics:
            if topic["id"] != int(id):
                newTopics.append(topic)
        topics = newTopics
        return redirect("/")
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