rubymine5.4.3 rails mysql数据库连接tips

Quirita ·
更新时间:2024-11-13
· 644 次阅读

  我安装的rails1.9.3默认是mysql2数据库,这个性能究竟比mysql强在哪里,没研究过,也不太会用,看网上有说在windows环境下性能体现不出来,所以还是想用mysql数据库连接,步骤如下:   1.首先卸载掉mysql2:   gemuninstallmysql2   2.安装mysqlruby驱动,需要指定参数,否则以后启动会报错:   geminstallmysql--platform=ruby--'--with-mysql-lib="[mysql安装路径]lib"--with-mysql-include="[mysql安装路径]include"--with-mysql-dir="[mysql安装路径]"'   3.修改database.yml文件:   adapter:mysql2改为:mysql   4.修改项目的gemfile:   注释掉下面一行:   #gemmysql2   改为:   gemmysql   5.用下面的程序测试mysql数据库链接,需在mysql中先见一个railsTest的database,然后run下面的测试脚本: MySqlTest.rb: classMysqlTest #Codehere require"mysql" deftestMysql dbc=Mysql.real_connect('localhost','root','fm0vrwc','mysql') res=dbc.query('select*fromuser') puts"TestMysql...." whilerow=res.fetch_rowdo puts"#{row[0]}" end end defcreateTable dbc=Mysql.real_connect('localhost','root','fm0vrwc','railsTest') dbc.query("droptableifexistsusers") dbc.query("createtableusers(idint,namechar(20),ageint)") dbc.query("insertintousersvalues(1,'Tom',30)") dbc.query("insertintousersvalues(2,'Art',50)") dbc.query("insertintousersvalues(3,'Kevin',40)") printf"CreateTable........" printf"%drowswereinserted ",dbc.affected_rows res=dbc.query("SELECT*FROMusers") puts"===SelectData=== " whilerow=res.fetch_rowdo printf"%d,%s,%d ",row[0],row[1],row[2] end puts"================== " puts"Serverversion:"+dbc.get_server_info rescueMysql::Error=>e puts"Errorcode:#{e.errno}" puts"Errormessage:#{e.error}" puts"ErrorSQLSTATE:#{e.sqlstate}"ife.respond_to?("sqlstate") ensure puts"CloseConnection......." dbc.closeifdbc end (MysqlTest.new).testMysql (MysqlTest.new).createTable end

  6.测试输出结果为: C:Ruby193inuby.exe-e$stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift)-ItestC:/Users/q/RubymineProjects/railTest2/test/MySqlTest.rb--name=testMysql Testingstartedat12:46PM... TestMysql.... localhost 127.0.0.1 ::1 % CreateTable........1rowswereinserted ===SelectData=== 1,Tom,30 2,Art,50 3,Kevin,40 ================== Serverversion:5.6.11 CloseConnection....... Processfinishedwithexitcode0



rubymine rails mysql数据库 Mysql

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