Ruby 勉強会

c:\ > @powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin

GoogleChrome, Firefox

vlc,　skitch, skype, gimp, InkScape, freemind

atom, git, aptana-studio,

ruby, ruby2.devkit, rubygems, pik,

SQLite, sqliteadmin

postgresql, pgadmin3

mysql, mysql.workbench

imagemagick

nodejs, npm, Yeman





openssh

hg

vagrant, packer

virtualbox

genymotion



Cygwin

putty

nmap

winscp

winmerge



calibre



CloudBerryExplorer

AWSTools

choco /? # ヘルプの表示

choco list -lo # インストール済みパッケージのリスト

■原因
##動かないバージョン(Cent OS 5.10)
$ rpm -qf /usr/bin/vim
vim-enhanced-7.0.109-7.2.el5

##動いたバージョン(Cent OS 6.2)
$ rpm -qf /usr/bin/vim
vim-enhanced-7.2.411-1.8.el6.x86_64

rails new myapp -B -T
cd myapp

#モデルの作成(作ったモデルを後で管理画面で操作できる)
rails g scaffold blog title content:text
vim config/routes.rb
+ root 'blogs#index'

vim Gemfile
+ gem 'devise'
+ gem 'rails_admin'
bundle install

rails g devise:install
vim app/views/layouts/application.html.erb
+ <p class="notice"><%= notice %></p>
+ <p class="alert"><%= alert %></p>

rails g devise user
vim app/models/user.rb
# :registerable, :recoverableの削除

vim db/migrate/devise_create_users.rb
# Recoverableのコメントアウト
# ## Recoverable
# t.string :reset_password_token
# t.datetime :reset_password_sent_at
# add_index :users, :reset_password_token, unique: true

rake db:migrate

rails g rails_admin:install
# <mount rails_admin? Press <enter> for [admin] >
# config\routes.rb # 順番入れ替え
+ devise_for :users
+ mount RailsAdmin::Engine => '/admin', as: 'rails_admin'

vim config/initializers/rails_admin.rb
+ == Decise == # 有効化

# パスワードの設定
rails c
User.create(email: "xx@yy", password: "xyz")

vim Gemfile
+ gem 'cancan'
bundle

vim config\initializers\rails_admin.rb
+ == Cancan == # 有効化

rails g cancan:ability
rails g migration add_admin_to_users admin:boolean
rake db:migrate

$ rails c
> User.first.update_attributes(admin: true) # 権限の追加
> User.create(email: 'guest@gmail.com', password: '00000000') # ゲスト追加

# app/models/ability.rb
user ||= User.new # guest user (not logged in)
if user.admin?
can :access, :rails_admin
can :manage, :all
else
can :access, :rails_admin
can :dashboard, :all
can :index, :all
end

ENV.update YAML.load_file('config/settings.yml')[Rails.env] rescue {}

defaults: &defaults
email: dev@example.com
secret: foo123

development:
<<: *defaults

test:
<<: *defaults
email: test@example.com

production:
<<: *defaults
email: info@example.com
secret: 321oof

config/settings.yml

rails new uploader_carrierwave

cd uploader_carrierwave

vim Gemfile

 #gem 'rmagick' # NG ?!

 gem 'rmagick', :require => 'RMagick' # 「stack level too deep」対策

 #gem 'mini_magick' # rmagickの軽量版

 gem 'carrierwave'

bundle install

rails g scaffold user name

rake db:migrate

# console

rails g migration add_avatar_to_users avatar:string

rake db:migrate

rails g uploader avatar

# => app/uploaders/avatar_uploader.rb

# app/uploaders/avatar_uploader.rb

class AvatarUploader < CarrierWave::Uploader::Base

  include CarrierWave::RMagick

  #include CarrierWave::MiniMagick



  storage :file



  def default_url

    ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))

  end



  version :thumb do

    process :resize_to_fill => [50,50]

  end



  def extension_white_list

    %w(jpg jpeg gif png)

  end

end

# app/models/user.rb

class User < ActiveRecord::Base

  mount_uploader :avatar, AvatarUploader

  validates :name, presence: true

end

# app/controllers/users_controller.rb

  private

    def user_params

      params.require(:user).permit(:name,:avatar,:remove_avatar)

    end

# app/views/users/_form.html.erb

# 追加

<%# form_for @user do |f| %>

<%= form_for @user, :html => {:multipart => true} do |f| %>

# 追加

  <div class="field">

    <%= f.label :avatar %><br/>

    <% if @user.avatar? %>

      <%= image_tag @user.avatar.thumb %>

      <%= f.hidden_field :avatar_cache if @user.avatar_cache %>

    <label><%= f.check_box :remove_avatar %>Remove avatar</label><br/>

    <% end %>

     URL:<%= f.text_field :remote_avatar_url %><br/>

     File:<%= f.file_field :avatar %><br/>

  </div>

# app/views/users/show.html.erb

# 追加(抜粋)

<% image_tag @user.avater %>

# app/views/users/show.html.erb

# 追加(抜粋)

<%= image_tag user.avatar.thumb %>

C:\Sites>bundle install
Fetching gem metadata from https://rubygems.org/..........

Fetching additional metadata from https://rubygems.org/..

Resolving dependencies...

Using rake 10.3.2

。。。

Using rails 4.0.2

Using rdoc 4.1.1



Gem::Ext::BuildError: ERROR: Failed to build gem native extension.



    C:/RailsInstaller/Ruby1.9.3/bin/ruby.exe extconf.rb

checking for Ruby version >= 1.8.5... yes

無効なドライブ指定です。

Unable to get ImageMagick version

*** extconf.rb failed ***

Could not create Makefile due to some reason, probably lack of

necessary libraries and/or headers.  Check the mkmf.log file for more

details.  You may need configuration options.



Provided configuration options:

        --with-opt-dir

        --without-opt-dir

        --with-opt-include

        --without-opt-include=${opt-dir}/include

        --with-opt-lib

        --without-opt-lib=${opt-dir}/lib

        --with-make-prog

        --without-make-prog

        --srcdir=.

        --curdir

        --ruby=C:/RailsInstaller/Ruby1.9.3/bin/ruby



extconf failed, exit code 1



Gem files will remain installed in C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rmagick-2.13.2 for inspection.

Results logged to C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/extensions/x86-mingw32/1.9.1/rmagick-2.13.2/gem_make.out

An error occurred while installing rmagick (2.13.2), and Bundler cannot continue.

Make sure that `gem install rmagick -v '2.13.2'` succeeds before bundling.

gem install rmagick --platform=ruby -- --with-opt-lib=c:\ImageMagick-6.8.7-Q16\lib --with-opt-include=c:\ImageMagick-6.8.7-Q16\include

dos> gem list rmagick
irb> require 'rmagick'