pycharm+django+postgresql+mac学习（1）

1.pycharm 连接postgresql 数据库

安装postgresql数据库，记住数据库的用户和密码，在pycharm中的datebase中选择new datebase ，配置postgresql，测试连接是否成功

在pycharm 文件选项打开preferences,找到project interperter,选择你本机的python位置，添加psycopg2和psycopg2-binary,django，pycharm会自己下载。

2.在setting.py中配置，INSTALLED_APPS和MIDDLEWARE，创建的默认项目一般不需要修改

若是新增app 则在INSTALLED_APPS中新增字段 'yourappname',

3. 创建模型，给数据库建表，修改models.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.db import models

# Create your models here.


class Publisher(models.Model):
    name = models.CharField(max_length=30)
    address = models.CharField(max_length=50)
    city = models.CharField(max_length=60)
    state_province = models.CharField(max_length=30)
    country = models.CharField(max_length=50)
    website = models.URLField()

class Author(models.Model):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=40)
    email = models.EmailField()

class Book(models.Model):
    title = models.CharField(max_length=100)
    authors = models.ManyToManyField(Author)
    publisher = models.ForeignKey(Publisher)
    publication_date = models.DateField()

在pycharm终端中输入python manage.py makemigrations website

随后输入python manage.py sqlmigrate website 0001可以看到生成的sql语句

随后输入python manage.py migrate创建数据库表