How to use

• In car_backend folder, python manage.py runserve <port [int]>

System check identified no issues (0 silenced).
February 16, 2025 - 20:54:24
Django version 5.1.6, using settings 'car.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.

Any time these show server is OK.

Folder structure

The root folder is ./car_trade

All commands contain file in this markdown file are relative url.

• car_trade: root
  • car_venv: python virtual environment
  • car_backend: backend using django
  • car_front: front mostly using Vue

car_backend folder structure

• car_backend: backend root
  • car: django apps settings
  • cars: the app of folder contains car infomation
  • transaction: the app of folder contains transaction information
  • user_info: the app of folder contains user information

environment setup

Backend Python

All the prerequisites(前提): python 3.13.1

• First, create a virtual environment by python -m venv <virtual name>. If OS is Windows, then use ./<virtual name>/Scripts/Activate.ps1 in the folder which has ran the command of create virual environment, and use source ./<virtual name>/bin/activate in Linux.
• Second, install the third libaray by command pip install -r requirements, this command must be ran in the place where requirements.txt in.
• When install correctly, use pip list to viladate the status.

All backend writen in car_backend folder and use django.

backend x front

Front Vue

• First, install Node.js. https://nodejs.org/zh-cn Test code below:

npm install -g @vue/cli
vue create my-project

• For this project, all configurations are default.Then just run npm run serve and click the url.
• When modify the code, npm run build is needed.

Mysql

• First, it must install MySQL, create relevant information in mysql: In windows, it should run net start mysql, you need add <mysql absolute path>/bin in environment variables when the command errors. Then, run mysql -u <username> -p then input password.
• attion: is what you want to name, and all username after this line will replace the name you spell. For example, if the is byun, then, all username will replace to byun(this is what I named).

create user 'username'@'%' identified by '';
grant all privileges on *.* to 'username'@'%';
flush privileges;

• Second, the settings file located in ./car_trade/car_backend/car/settings.py in 78 lines. If want to modify, here's example:

DATABASES = {
     'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'databasename',
        'USER': 'username',
        'PASSWORD': 'user password',
        'HOST': 'mysql client url', 
        'PORT': 'mysql client port',
    }
}

Or use the default settings.py.

• Third, run django server which says in Paragraph 1 How to use to validate whether mysql connect correctly. If connections went right, then run command python manage.py makemigrations and python manage.py migrate