跟我一起用Symfony写一个博客网站；

第一步：

composer create-project symfony/framework-standard-edition 你的项目名；

创建完这个原型，我执行php bin/console server:run，可以跑起来；

那么此刻你需要连接数据库了：我的数据库是PostgreSql

写一个数据库创建脚本例如我的

create user myblog with password ‘myblog‘ ;
ALTER USER myblog WITH PASSWORD ‘myblog‘;

create database myblog_dev with encoding=‘utf8‘ ;
create database myblog_prod with encoding=‘utf8‘ ;
create database myblog_test with encoding=‘utf8‘ ;

grant all privileges on database myblog_dev to myblog ;
grant all privileges on database myblog_test to myblog;
grant all privileges on database myblog_prod to myblog;

\connect myblog_dev;
create schema extensions;
create extension hstore schema extensions;
ALTER DATABASE myblog_dev SET search_path to "$user",public,extensions;
alter database myblog_dev owner to myblog;
alter schema public owner to myblog;
alter schema extensions owner to myblog;
GRANT USAGE ON SCHEMA public to myblog;

\connect myblog_prod;
create schema extensions;
create extension hstore schema extensions;
ALTER DATABASE myblog_dev SET search_path to "$user",public,extensions;
alter database myblog_dev owner to myblog;
alter schema public owner to myblog;
alter schema extensions owner to myblog;
GRANT USAGE ON SCHEMA public to myblog;

\connect myblog_test;
create schema extensions;
create extension hstore schema extensions;
ALTER DATABASE myblog_dev SET search_path to "$user",public,extensions;
alter database myblog_dev owner to myblog;
alter schema public owner to myblog;
alter schema extensions owner to myblog;
GRANT USAGE ON SCHEMA public to myblog;

根据脚本创建数据库。

第二步，让你的程序这个原型程序连接数据库：

找到config.yml

复制代码:

# Doctrine Configuration
doctrine:
    dbal:
        driver:   %database_driver%
        host:     %database_host%
        port:     %database_port%
        dbname:   %database_name%
        user:     %database_user%
        password: %database_password%
        charset:  UTF8

找到parameters.yml和parameters.yml.dist

连接你的数据库名字（配置一样的）：

# This file is auto-generated during the composer install
parameters:
    database_driver: pdo_pgsql
    database_host: 127.0.0.1
    database_port: null
    database_name: 数据库名字
    database_user: 数据库用户名
    database_password: 数据库密码
    mailer_transport: smtp
    mailer_host: 127.0.0.1
    mailer_user:
    mailer_password:
    secret: ThisTokenIsNotSoSecretChangeIt

这样就连上数据库了；

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第三步，根据业务需求开始写Bundle：

注：bundle的真义在于，它是作为软件的一个“可被复用”的独立构成而存在。如果UserBundle不能“原封不动地”使用在别的Symfony程序中，它不应该成为bundle。另外，如果InvoiceBundle依赖于ProductBundle，那便没有任何必要将它们分成两个bundle。

以下是穿件Bundle的命令：在这里我不打算创建新Bundle

php bin/console generate:bundle --namespace=AppBundle --dir=src --format=annotation --no-interaction