django11 - ajax, db

 

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properties 참고하여 경로이동 

python manage.py inspectdb > aa.py

 

생성된 aa.py에서 Sangdata 복사 후 models.py에 복사

 

 

settings.py

"""
Django settings for django11_ajax_db project.

Generated by 'django-admin startproject' using Django 4.1.2.

For more information on this file, see
https://docs.djangoproject.com/en/4.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/4.1/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/4.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = "django-insecure-)+i!6!611b&$93wyj+vjr614yog1y72sn$1h4orv2n&h(sr4t("

# 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",
    "myajax",
]

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 = "django11_ajax_db.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 = "django11_ajax_db.wsgi.application"


# Database
# https://docs.djangoproject.com/en/4.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'test',
        'USER': 'root',
        'PASSWORD': '123',
        'HOST': '127.0.0.1',
        'PORT': '3306',
    }
}


# Password validation
# https://docs.djangoproject.com/en/4.1/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/4.1/topics/i18n/

LANGUAGE_CODE = "ko-kr"

TIME_ZONE = "Asia/Seoul"

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/4.1/howto/static-files/

STATIC_URL = "static/"

# Default primary key field type
# https://docs.djangoproject.com/en/4.1/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

 

 

models.py

위의 과정에서 생성된 aa.py에서 Sangdata 복사 후 models.py에 복사

from django.db import models

# Create your models here.
class Sangdata(models.Model):
    code = models.IntegerField(primary_key=True)
    sang = models.CharField(max_length=20, blank=True, null=True)
    su = models.IntegerField(blank=True, null=True)
    dan = models.IntegerField(blank=True, null=True)

    class Meta:
        managed = False
        db_table = 'sangdata'

 

 

urls.py

from django.contrib import admin
from django.urls import path
from myajax import views

urlpatterns = [
    path("admin/", admin.site.urls),
     
    path('',views.MainFunc),
    path('list',views.ListFunc),
    path('calldb1',views.ListDbFunc),
    path('calldb2',views.ListDbFunc),
]

 

 

views.py

from django.shortcuts import render
from myajax.models import Sangdata
from django.http.response import HttpResponse
import json

# Create your views here.
def MainFunc(request):
    return render(request, 'main.html')


def ListFunc(request):
    return render(request, 'list.html')


def ListDbFunc(request):
    sdata = Sangdata.objects.all()
    
    datas = []
    for s in sdata:
        dic = {'code':s.code, 'sang':s.sang, 'su':s.su, 'dan':s.dan,}
        datas.append(dic)
    print(datas)
    return HttpResponse(json.dumps(datas), content_type="application/json")

 

 

main.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
메인<p/>
부서 직원 고객 <a href="/list">상품</a>
</body>
</html>

 

 

list.html

기본 방식과 fetch 방식

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
let xhr;

window.onload = function(){
	
	// 자바스크립트 객체(XMLHttpRequest)를 사용한 ajax 기본 방식
	document.querySelector("#btnOk1").onclick = function(){
		xhr = new XMLHttpRequest();
		xhr.onreadystatechange = function(){
			if (xhr.readyState === XMLHttpRequest.DONE){
				if(xhr.status === 200){
					process1();
				}
			}
		}
		url = "calldb1"
		xhr.open("GET", url, true); 
		xhr.send();
	}
	
	// fetch 방식
	document.querySelector("#btnOk2").onclick = function(){
		const url = "calldb2";
		
		fetch(url).then(res => {
			if(res.status === 200){
				return res.json()
			}else{
				console.error(`HTTP 에러! status:$(res.status)`);
			}
		})
		.then(jsonData => {
			process2(jsonData);
		})
		.catch(err =>{
			console.error(err);
		});
	}
}

function process1(){
	let parseData = JSON.parse(xhr.responseText);
	// alert(parseData);
	let str = "<table border='1'>"
	str += "<tr><th>코드</th><th>품명</th><th>수량</th><th>단가</th></tr>";
	let count = 0;
	for(let i = 0; i < parseData.length; i++){
		str += "<tr>";
		str += "<td>" + parseData[i].code + "</td>";
		str += "<td>" + parseData[i].sang + "</td>";
		str += "<td>" + parseData[i].su + "</td>";
		str += "<td>" + parseData[i].dan + "</td>";
		str += "</tr>";
		count++;
	}
	str += "</table>";
	
	document.querySelector("#showData1").innerHTML = str;
	
}

function process2(jsonData){
    let str = "<table border='1'>"
    str += "<tr><th>코드</th><th>품명</th><th>수량</th><th>단가</th></tr>";
    let count = 0;
    
    for(let i = 0; i < jsonData.length; i++){
       str += "<tr>";
       str += "<td>" + jsonData[i].code + "</td>";
       str += "<td>" + jsonData[i].sang + "</td>";
       str += "<td>" + jsonData[i].su + "</td>";
       str += "<td>" + jsonData[i].dan + "</td>";
       str += "</tr>";
       count++;
    }
    str += "</table>";
    
    document.querySelector("#showData2").innerHTML = str;
    
 }
</script>
</head>
<body>
Ajax 연습 : 원격 DB 자료 보기<p/>
<button id="btnOk1">상품자료 출력 1</button>
<br>
<div id="showData1"></div>
<hr>
<button id="btnOk2">상품자료 출력 2</button>
<br>
<div id="showData2"></div>
</body>
</html>