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collection partial的效能问题

Status: Open.

#96 In quanzhanying/fullstack-course;

· 3014zhangshuo opened on Nov 8, 2016

gem 'XXX', group: :development和直接放在development下面有区别吗？

Status: Open.

#95 In quanzhanying/fullstack-course;

· dyz2102 opened on Nov 2, 2016

把某个已经放进购物车的商品在后台删除后，购物车页面会报错"item_id nil", 何解？

Status: Open.

#94 In quanzhanying/fullstack-course;

· yzha3917 opened on Nov 1, 2016

购物车总额的代码为什么sum需要先define为0？

Status: Open.

#93 In quanzhanying/fullstack-course;

· dyz2102 opened on Oct 31, 2016

关于图片栏在资料库中为nil值判断问题

Status: Open.

#91 In quanzhanying/fullstack-course;

· liangchaob opened on Oct 27, 2016

config/database.yml 这个有什么用

Status: Open.

#90 In quanzhanying/fullstack-course;

· qinfeng8848 opened on Oct 26, 2016

.collect(&:id)的语法问题

Status: Open.

#89 In quanzhanying/fullstack-course;

· liangchaob opened on Oct 25, 2016

simple_format 和 simple_form_for

Status: Open.

#88 In quanzhanying/fullstack-course;

· 3014zhangshuo opened on Oct 25, 2016

controller里面的private可以写什么样的def？

Status: Open.

#87 In quanzhanying/fullstack-course;

· 3014zhangshuo opened on Oct 25, 2016

-> 跟=>有什么区别？

Status: Open.

#86 In quanzhanying/fullstack-course;

· 3014zhangshuo opened on Oct 24, 2016

params的一个问题

Status: Open.

#85 In quanzhanying/fullstack-course;

· 3014zhangshuo opened on Oct 24, 2016

before action 和before filter 有什么区别？

Status: Open.

#84 In quanzhanying/fullstack-course;

· 3014zhangshuo opened on Oct 24, 2016