fsjoy1983的博客_railscast原创博文

035 自定义REST action

Custom REST Actions REST adds many constraints. It restricts your controllers to seven actions. Normally this is okay, but sometimes you need to add your own custom actions. Learn how in this episo

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035

railscasts

原创 2009-02-21 15:48:54 732 阅读

034 命名路由

When you add a custom route, make it a named route so you have url helper methods to easily link to that new route. See episode for details. 当你添加一条自定义路由，使之成为一条命名路由，这样就有了一个url的helper方法，用这个help

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034

命名路由

railscasts

原创 2009-02-21 09:54:52 1312 阅读

033 制作rails插件

You can sometimes remove a lot of duplication by generating methods dynamic. In this episode I will show you how to create a plugin which does exactly that. 通过动态的生成方法可以减少大量的代码重复。这一节讲述如何创建一个ra

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033

railscasts

制作rails插件

原创 2009-02-21 09:37:38 971 阅读

032 文本框中的时间格式

Time in Text Field Although Rails does allow you to edit time attributes with text fields, it's not very flexible. In this episode you will learn how to use a virtual attribute to format the time t

in

time

text

field

032

原创 2009-02-20 16:56:26 1286 阅读

031 格式化时间显示

Formatting Time Learn how to use the trusty strftime method to format a time, and see how Rails allows you to save this format for later use. 学习如何适用strftime方法格式化时间，并且看看rails如何实现保存这个格式，以备再用

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格式化

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031

时间railscasts

原创 2009-02-20 15:51:24 1093 阅读

030 漂亮的页面标题

<html> <head> &nb

030

railscasts

pretty

page

title

原创 2009-02-20 11:30:31 977 阅读

029 按月分组 group_by Month

group_by Month Learn how to use the very useful group_by method to group an array by anything you want! In this episode I group an array of tasks by month then sort it properly. 学习如何使用grou

group

by

029

railscasts

month

原创 2009-02-20 11:14:09 2241 阅读

028 in group of 分组显示

in_groups_of Have you ever wanted to visually line up items in rows and columns? The in_groups_of method makes this a cinch. Just watch out for the gotcha. 你是否曾经希望显示的条目能按行列对其呢？用in_groups_o

of

in

group

028

railscasts

原创 2009-02-20 10:05:58 780 阅读

027 跨站脚本攻击

Cross Site Scripting Another common security issue is cross site scripting. In this episode you will see why it is so important to escape any HTML a user may submit. 另一个常见的安全性问题就是跨站脚本攻击。这节

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027

原创 2009-02-20 09:52:20 623 阅读

026 黑客喜欢mass assignment

Hackers Love Mass Assignment Your site may be at risk! When using mass assignment, you are giving the user complete control over that model and its associations. See how a hacker might use this vul

hacker

mass

026

railscast

assignment

原创 2009-02-19 22:00:31 1665 阅读

024 栈追踪

The Stack Trace（栈追踪） The stack trace can be a very useful tool when it comes to debugging. Learn the ins and outs of how the stack trace works in this episode. Note: I am using an older version of

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024

railscasts

栈追踪

原创 2009-02-19 20:10:33 837 阅读

023 计数器缓存字段(counter cache column)

Counter Cache Column If you need to display the record count for a has_many association, you can improve performance by caching that number in a column. 如果你需要显示某个对象所关联对象的个数，你可以在一个字段中缓存这个数字

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023

railscasts

计算器缓存字段

原创 2009-02-19 19:56:44 743 阅读

022 贪婪加载(Eager loading)

Eager Loading One way to improve performance is to cut down . the number of SQL queries. You can do this through eager loading. Learn all about it in this episode! 提高性能的一个途径就是减少SQL查询的次数，可以

loading

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022

railscasts

eager

原创 2009-02-19 18:06:53 1718 阅读

021 超级简单的权限认证

Super Simple Authentication The final piece of the administration puzzle: authentication. There are many different approaches which is why I saved this step for last. This episode will cover a few

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021

railscast

超级简单的

权限认证

原创 2009-02-19 14:58:28 726 阅读

020 访问限制

In this second part of the series on administration, you will learn how to lock down the site to keep the public from accessing the administration features. 在介绍管理部分系列的第二部分，你将学习如何限制访问权限的相关内容。

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019

访问限制

railscasts

原创 2009-02-19 14:47:02 644 阅读

019 应该把管理部分放到哪儿？

This is the first part of a three part series on building an administration system. Many developers choose to separate it completely from the public side of the site by placing it into an admin subdir

管理

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admin

019

railscasts

原创 2009-02-19 14:01:27 774 阅读

018 循环显示flash信息

Displaying flash messages in the layout can be a pain at times. In this episode you will learn an easy way to display any kind of flash message by looping through the hash. 有时候在layout中显示flash

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018

railscasts

循环显示flash

原创 2009-02-19 12:58:28 785 阅读

017 多对多关系下的多选框

HABTM Checkboxes It is often asked: how do I create a list of checkboxes for managing a HABTM association? Ask no more because this episode will show you how to do exactly that. 经常出现这样一个

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017

railscasts

多对多关系下的多选框

原创 2009-02-19 09:39:47 871 阅读

016 虚拟属性

Virtual Attributes Keep your controllers clean and forms flexible by adding virtual attributes to your model. This very powerful technique allows you to create form fields which may not directly re

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016

railscasts

虚拟属性

原创 2009-02-19 09:16:40 932 阅读

015 有趣的查询条件

Fun with Find Conditions You can pass more than simple strings to find conditions. Arrays, ranges, and nil values can be passed as well. In this episode you will see the tricks involved with passing

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015

railscasts

有趣的查询条件

原创 2009-02-18 22:05:14 562 阅读

014 对model进行计算

Did you know ActiveRecord provides class methods for performing calculations on models? You can even use these methods through associations. 你知道ActiveRecord提供了许多类方法，用来实现对model属性的计算吗？你甚至可以通过关联

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014

railscasts

对model

进行计算

原创 2009-02-18 21:45:23 696 阅读

012 重构用户名（第三部分）

In the final part of this series you will see how to refactor your tests. Keeping tests clean is important because it will make testing easier to do in the future. 在重构用户名系列的最后一节，我们介绍如何重构测试。保持

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railscasts

012

重构用户名

第三部分

原创 2009-02-18 21:03:52 656 阅读

011 重构用户名（第二部分）

Testing and refactoring go hand in hand. Refactoring is all about improving code without changing its behavior. Testing is all about making sure you don't change the behavior while you are improving t

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railscasts

011

重构用户名

原创 2009-02-18 20:52:25 880 阅读

010 重构用户名（第一部分）

Learn how to clean up your code through refactoring. This episode will show you how to move code from the view into the model to remove duplication and simplify the view. 学习如何通过重构来整理你

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010

railscasts

重构用户名

第一部分

原创 2009-02-18 20:33:42 611 阅读

009 过滤敏感日志

Filtering Sensitive Logs Are you accepting sensitive user data? Passwords, credit card numbers, etc. By default, Rails stores all submitted parameters in plain text in the logs. This episode will sho

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Logs

Filtering

009

Sensitive

原创 2009-02-18 20:15:36 876 阅读

008 layout和content_for

If you want to change something in the layout on a per-template basis, content_for is your answer! This allows templates to specify view code that can be placed anywhere in a layout. 当你希望在某些模

rails

休闲

casts

layout

content_for

原创 2009-02-18 20:05:33 986 阅读

005 使用with_scope

Learn how to use with_scope - a very powerful method which will allow your custom find methods to accept any find options. Just like magic! 这一节学习如何使用with_scope-一个非常强大的方法，利用这个方法可以使得自定义的find方法接受更多的参数。

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with_scope

005

railscasts

原创 2009-02-18 18:04:00 843 阅读

004 把查找对象的方法放到model里

在tasks控制器中 class TasksController < ApplicationController def index @tasks= Task.find_all_by_complete(false, :order=>'created at DESC')

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model

railscast

查找对象的方法

004

原创 2009-02-18 17:51:36 663 阅读 3评论

013 把模型对象存入session的危险性

Be careful when storing a model in a session. It will behave differently than you expect and can easily get out of sync with the database. Instead of storing the model directly in the session, store

rails

session

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model

013

原创 2008-11-17 14:46:07 1671 阅读 1评论

007 content for

在layout/application.rhtml中是一个全局渲染模板，在此模板的html代码中插入 <%= yield%>可以将控制器中对应action的模板嵌入，也可以在application.rhtml模板的框架中留出位置来使用<%= yield :symbol%>，然后在action模板中使用 <%content_for :symbol do %>

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rails

休闲

content_for

原创 2008-11-17 14:14:30 692 阅读

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李骥平

035 自定义REST action

034 命名路由

033 制作rails插件

032 文本框中的时间格式

031 格式化时间显示

030 漂亮的页面标题

029 按月分组 group_by Month

028 in group of 分组显示

027 跨站脚本攻击

026 黑客喜欢mass assignment

024 栈追踪

023 计数器缓存字段(counter cache column)

022 贪婪加载(Eager loading)

021 超级简单的权限认证

020 访问限制

019 应该把管理部分放到哪儿？

018 循环显示flash信息

017 多对多关系下的多选框

016 虚拟属性

015 有趣的查询条件

014 对model进行计算

012 重构用户名（第三部分）

011 重构用户名（第二部分）

010 重构用户名（第一部分）

009 过滤敏感日志

008 layout和content_for

005 使用with_scope

004 把查找对象的方法放到model里

013 把模型对象存入session的危险性

007 content for