###### tags: `Django` `python` `tutor`
[TOC]
# Django Note
*Author : Jerry Hsieh
Email : kilicapeto@gmail.com*
## Install Docker and Built Environment
1. Docker
2. Brain
## Docker basic CLI
```bash
# Docker images process
build # build the image
run # use for the into the images
images # display all the images in docker
rmi # remove image
# Docker Container process
ps -a # display all the docker container
stop # stop the container
rm # remove the container
exec # use for the container
```
## Django Install in Docker
### 1. Create Python Docker environment
* 1.1 create the requirements.txt
This store the python package.
```bash
# path : ./requirments.txt
Django==3.0.7
djangorestframework==3.11.0
```
P.S if you wanna check pipy newest version to [pipy](https://pypi.org/)
and if you wanna run all the package you can try:
```bash
# Don't run this command
pip install -r requirements.txt
```
but you need to installed the python and pip.
* 1.2 Create Docker file
For example:
```dockerfile
# Dockerfile
# path : ./Dockerfile
FROM python:3.7
ENV PYTHONUNBUFFERED 1
RUN mkdir /app
COPY requirements.txt /app/
WORKDIR /app
RUN pip install -r requirements.txt
COPY . /app/
```
### 2. Built the docker images
```dockerfile
docker build -t app:latest .
# -t image of tag；. is Currently path
# app:latest {image name}:{tag}
# Check your image
docker images
```
### 3. Into the Docker Container
It's sync with local path.
```bash
docker run --rm -it -v ${PWD}:/app -p 8000:8000 app /bin/bash
# ${PWD} = Currently path
# -v ${PWD}:/app v = volumn Local and docker sync
```
### 4. Create Django Project
```bash
django-admin startproject mysite
# mysite = your django name
# Will be project folder move to previous folder
```
## Re-run
```bash
# run the step 3 will be OK
docker run --rm -it -v ${PWD}:/app -p 8000:8000 app /bin/bash
```
---
# Django Introduction
## Django CLI
### 1. Check you have in docker.
### 2. run the below CLI.
```bash
python manage.py
```
This tutorial will be talking about the below the tag.
```bash
[auth]
changepassword
createsuperuser // create superuser
[contenttypes]
remove_stale_contenttypes
[django]
check
compilemessages
createcachetable
dbshell
diffsettings
dumpdata
flush
inspectdb
loaddata
makemessages
makemigrations # create migrations file
migrate # migrate to db
sendtestemail
shell
showmigrations
sqlflush
sqlmigrate
sqlsequencereset
squashmigrations
startapp # create application in project
startproject
test
testserver
[sessions]
clearsessions
[staticfiles]
collectstatic
findstatic
runserver # run the server
```
### 3. Try to run the django service
```bash
python manage.py migrate
python manage.py runserver 0.0.0.0:8000
```
open the browser
input url : [http://127.0.0.1:8000/](http://127.0.0.1:8000/)
and you will look this interface:
# Django Structure Introduction
## create super user
```bash
python manage.py createsuperuser
# for example
# Username : admin
# Email : admin@example.com
# Password : admin
# Password (again) : admin
# y
```
## urls (routes)
```bash
# if you're in touch with any framework.
# you can first try to find the routes in project that will help you understand and grasp the whole projects.
```
此章節稍微閱讀即可 先將path exchange to url.
path : mysite/urls.py
```python
# path : ./mysite/urls.py
from django.conf.urls import url
urlpatterns = [
url('^admin/', admin.site.urls),
]
```
try to look the page [click](http://0.0.0.0:8000/admin/)
**path and url different**
```python
# from django.urls import path
# vs
# from django.conf.urls import url
# Description: url is support the regex so Like
url(r'^book/$', )
# vs
path('book/', )
# path is http://localhost:8000/book/
```
## settings
```bash
# Main components
1. DEBUG
2. ALLOWED_HOSTS
3. INSTALLED_APPS
4. MIDDLEWARE
5. TEMPLATES
6. DATABASES
7. STATIC_URL
```
1. Debug
如果非開發狀態建議設為False, 結果如下:
```python
Debug = True
```
```
Debug = False
```
2. ALLOWED_HOSTS
這是允許的IP 設置
```python
ALLOWED_HOSTS = ['*']
# * = all
# example ['localhost', '127.0.0.1', '192.168.x.x']
```
3. INSTALLED_APPS
將需要使用的Applications 加入此中
```python
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
# your application
'first_applications',
]
```
4. MIDDLEWARE
此為中間器，在進入application時會先做處理 如：驗證使用者
**目前預設即可**
5. TEMPLATES
前端渲染路徑設定**如沒有使用預設即可**
本課程也不考慮教授 如有需要付錢
6. DATABASES
使用的Database and Engine
Default is use the sqlite3:
```python
#
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}
}
```
MySQL Database settings Example:
首先
```bash
pip install pymysql
# 建議要使用可以加入 requirment.txt
```
```python
import pymysql
...
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'database',
'USER':'root',
'PASSWORD':'',
'HOST':'',
'PORT':'',
}
}
```
7. STATIC_URL
前端會使用的一些類別 如 css bootstrap的路徑設定
本教學也不會談到這
# 正式開始寫API！！ 開發Applications！！
建議使用django 創建一個app
```bash
# python manage.py startapp {app_name}
python manage.py startapp applications
```
在上一章節說到要將app 加入至settings
```python
# ./mysite/applications
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
# add application
'applications',
# 因為有安裝djangorestframework in requirments.txt 所以加上
'rest_framework',
]
```
這樣在啟動的時候就會先導入至Django中
## API 撰寫
##
---
# To be continued
###
### views
to be continued
for example
```python
# path : ./mysite/urls.py
from applications import views
from django.conf.urls import url
url(r'^/$', views.ClassObject.as_view(), name="root_path")
```
### how to sql-data add to admin manager
### Explain model ORM
### Detail description
# Django common package & Introduction
```bash
# Django restful
djangorestframework==3.11.0
# Login
## Oauth by django
django-oauth-toolkit
## Oauth by python
python-oauth2
## jwt by django
djangorestframework-jwt
djangorestframework_simplejwt
## jwt by python
pyjwt
jwt
```
```
from django.http import JsonResponse
```
to be continued
**沒有了還往下滑 不要急好嗎!!!!!!**
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