RubyBarCamp “Полезные gems и plugins”

GEMS / PLUGINS
Интересно, полезно, весело

Что такое джемс?

RubyGems (rubygems.org) — пакетный
менеджер для руби

Единый формат распространения отдельных
программ и библиотек

Программа для установки библиотек (джемс)

Сервер для распространения джемс

Преимущества джемс

require ‘rubygems’
require ‘gemname’

sudo gem update

Отсутствие централизации

Стандартный формат: 8300 джемс на
Rubyforge, 7400 джемс на Github

Github

125000 пользователей

100000 проектов

gists

GitHub Pages

restful-authentication
(technoweenie)

./script/generate authenticated user sessions

map.signup ‘/signup’,
:controller => ‘users’, :action => ‘new’
map.login ‘/login’,
:controller => ‘session’, :action => ‘new’
map.logout ‘/logout’,
:controller => ‘session’, :action => ‘destroy’

authlogic (binarylogic)

class UserSession < Authlogic::Session::Base
# specify configuration here, such as:
# logout_on_timeout true
# ...many more options in the documentation
end

UserSession.create(:login => "john",
:password => "my password",
:remember_me => true)

session.destroy

will_paginate (mislav)

Post.paginate :page => 1,
:order => 'created_at DESC'

@posts = Post.paginate_by_board_id
@board.id,
:page => params[:page],
:order => 'updated_at DESC'

<%= will_paginate @posts %>

paperclip (thoughtbot)

class User < ActiveRecord::Base
has_attached_file :avatar,
:styles => {
:medium => "300x300>",
:thumb => "100x100>" }
end

<%= image_tag @user.avatar.url %>
<%= image_tag @user.avatar.url(:medium) %>
<%= image_tag @user.avatar.url(:thumb) %>

cucumber (aslakhellesoy)

Feature: Addition
In order to avoid silly mistakes
As a math idiot
I want to be told the sum of two numbers

Scenario: Add two numbers
Given I visit the calculator page
And I fill in '50' for 'first'
And I fill in '70' for 'second'
When I press 'Add'
Then I should see 'Answer: 120'

cucumber (cont’d)

Given /Î visit the calculator page$/ do
  visit '/add'
end

Given /Î fill in '(.*)' for '(.*)'$/ do |value, field|
  fill_in(field, :with => value)
end

When /Î press '(.*)'$/ do |name|
  click_button(name)
end

Then /Î should see '(.*)'$/ do |text|
  response_body.should contain(/#{text}/m)
end

attachment_fu (technoweenie)

has_attachment
:size => 1.megabyte..2.megabytes
has_attachment
:content_type => 'application/pdf'
has_attachment
:store => :s3, :cloudfront => true

attachment_obj.public_filename
#=> /attachments/2/file.jpg
attachment_obj.public_filename(:thumb)
#=> /attachments/2/file_thumb.jpg

webrat (brynary)

visit home_path
click_link "Sign up"
fill_in "Email", :with => "good@example.com"
select "Free account"
click_button "Register"

bort (fudgestudios)

default css

rm rails.png/index.html

page title helper

application layout

filtering password /password_confirmation

database for sessions

capistrano for git/passenger

plugins (RESTful authentication, role requirement, Open ID authentication,
will_paginate, rspec/rspec-rails, exception notifier, asset packager)

whenever (javan)

wheneverize .

every 3.hours do
runner "MyModel.some_process"
rake "my:rake:task"
end

every 1.day, :at => '4:30 am' do
command "/usr/bin/my_great_command"
end

whenever --update-crontab

formtastic (justinfrench)

<% semantic_form_for @article do |form| %>
<% form.inputs :name => "Basic" do %>
<%= form.input :title %>
<%= form.input :publication_state, :as => :radio %>
<%= form.input :allow_comments, :label => "Allow commenting on this article" %>
<% end %>`

<% form.inputs :name => "Advanced" do %>
<%= form.input :keywords, :required => false, :hint => "Example: ruby, rails, forms"
%>
<% end %>

<% form.inputs :name => "Author", :for => :author do |author_form| %>
<%= author_form.input :ﬁrst_name %>
<%= author_form.input :last_name %>
<% end %>

<% form.buttons do %>
<%= form.commit_button %>
<% end %>
<% end %>

delayed_job (tobi)

create_table :delayed_jobs, :force => true do |table|
table.integer :priority, :default => 0 #Allows some jobs to jump to the front of the queue
table.integer :attempts, :default => 0 #Provides for retries, but still fail eventually.
table.text :handler #YAML-encoded string of the object that will do work
table.string :last_error #reason for last failure (See Note below)
table.datetime :run_at #When to run. Could be Time.now for immediately, or sometime in the future.
table.datetime :locked_at #Set when a client is working on this object
table.datetime :failed_at #Set when all retries have failed (actually, by default, the record is
deleted instead)

table.string :locked_by #Who is working on this object (if locked)

table.timestamps
end

MyJob#perform

haml (Hampton Caitlin)

%ul
%li Salt
%li Pepper

%p
Date/Time:
- now = DateTime.now
%strong= now
- if now > DateTime.parse("December 31, 2006")
= "Happy new " + "year!"

!main_bg= #46ar12
!main_width= 40em

#main
background-color = !main_bg
width = !main_width
.sidebar
background-color = !main_bg + #333333
width = !main_width - 25em

searchlogic (binarylogic)

User.username_equals("bjohnson")
User.username_does_not_equal("bjohnson")
User.username_begins_with("bjohnson")
User.username_not_begin_with("bjohnson")
User.username_like("bjohnson")
User.username_ends_with("bjohnson")
User.age_greater_than(20)
User.age_greater_than_or_equal_to(20)
User.username_null
User.username_not_null
User.username_blank

searchlogic (cont’d)

User.username_eq(10) # equals
User.id_lt(10) # less than
User.id_lte(10) # less than or equal to
User.id_gt(10) # greater than
User.id_gte(10) # greater than or equal to
User.orders_total_greater_than(20)
User.orders_line_items_price_greater_than(20)
User.ascend_by_order_total
User.descend_by_orders_line_items_price
User.username_like_all("bjohnson", "thunt") #will return any users that have all of the strings in their username
User.username_like_any(["bjohnson", "thunt"]) #also accepts an array
User.username_or_first_name_like("ben")
User.id_or_age_lt_or_username_or_first_name_begins_with(10)
search = User.search(:username_like => "bjohnson", :age_less_than => 20)
User.named_scope :four_year_olds, :conditions => {:age => 4}
User.search(:four_year_olds => true, :username_like => "bjohnson")
User.username_like("bjohnson").age_less_than(20).paginate(:page => params[:page])
User.search(:username_like => "bjohnson", :age_less_than => 20).paginate(:page =>
params[:page])
User.searchlogic

Автора ÿбер-джемсов
Technoweenie — Рик Fudgestudios — Фил
Олсон, ENTP Джеффс, fudgestudios

Binarylogic — Бен Javan — Джаван Махмали,
Джонсон, Binary Logic Inkling Markets

Mislav — Мислав Justinfrench — Джастин
Марохнич, Uniqpath Френч, Indent

Aslakhellesoy — Аслак Tobi — Тобиас Лютке,
Хеллесёй, BEKK Consulting JadedPixel

Brynary — Брайан hampton — Хэмптон
Хелмкамп, weplay Кейтлин

Спасибо!

apostlion@gmail.com

@apostlion

RubyBarCamp “Полезные gems и plugins”

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