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My old blog

Home Page: https://hugochougt.com/old-blog

Ruby 0.62% HTML 3.10% Sass 93.46% SCSS 2.82%

old-blog's Introduction

🏡 hugochougt.com

My home on the web.

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old-blog's Issues

修复 code block 样式

usage of jQuery proxy method

使用 to_sql 来 debug 数据库查询

方法签名：to_sql(arel, binds = []) - Converts an arel AST to SQL

还要学习下 arel AST。

Ajax详解

Ruby's attr_accessor vs Rails' attr_accessible

Ruby 的 attr_accessor 与 Rails 的 attr_accessible 是不同的。

Cookies vs Sessions in Rails

Difference between `collections.sum(&:column)` and `collections.sum(:column)`

collections.sum(&:column) 是遍历，collections.sum(:column) 是一条 SQL 查询。

Create a controller for polymorphic association

本质就是要找到对应的 polymorphic type 和 id。

经过搜索有三种主要方法：

遍历 params，找到 polymorphic 类的 id key：http://karimbutt.github.io/blog/2015/01/03/step-by-step-guide-to-polymorphic-associations-in-rails/
在请求中带上 polymorphic type：http://pathfindersoftware.com/2008/07/drying-up-rails-controllers-polymorphic-and-super-controllers/
使用继承：https://gorails.com/episodes/comments-with-polymorphic-associations

Use carrierwave to upload images in Grape

def tempfile_to_uploaded_file(tempfile)
  if tempfile && tempfile.is_a?(Hash) && tempfile[:tempfile]
    ActionDispatch::Http::UploadedFile.new tempfile
  else
    tempfile
  end
end

Skip callbacks in model

There's no before_render

http://stackoverflow.com/questions/19308121/rails-filter-hook-for-after-a-controller-action-has-run-but-before-the-view-is

Integrate AngularJS with Rails

Once run rails new command, add gem 'sprockets', '2.12.3' to Gemfile, then follow the tutorial on Zero to deployment in less than 10,000 words

在 Rails 中集成 SOAP Web Service

Gems:

# https://github.com/savonrb/savon
# Heavy metal SOAP client
gem 'savon', '~> 2.10.0'

# Rails 3/4 SOAP server library
# https://github.com/inossidabile/wash_out
gem 'wash_out', '~> 0.9.2'

测试代码示例

c = Savon.client do
  wsdl "http://xxx.com/llll/wsdl"
  wsse_auth 'aaa', 'ddd'
end

r = c.call :update_song, message: { id: '1115', reason: '啊啊~~~五~~~环~~' }
r.body

ActiveRecord date time range query

start_date = "2015-01-01".to_date
end_date   = "2015-01-02".to_date
Model.where(created_at: start_date..end_date)

这段代码有什么问题？

Update nokogiri ~> 1.8.1

Create file path variable in rails

file_name = "#{foo}-#{bar}.txt"
file_path = Rails.root.join("tmp", file_name)

Understanding of jQuery Ajax hooks

Redesign blog theme

现在的 mediator 主题在显示代码块的时候太丑。

meta_search 的 sort_link 方法没有对数据排序

原因

Model 里有 default_scope { order('id DESC') }。

解决方法

使用 Model#unscoped 取消 default_scope 的副作用，具体例子如 Model.unscoped.search(params[:search])。