@allie_p Defeating the Darkness with Presenters No More Dragons Allison McMillan @devneck Kevin Hopkins

Allison Kevin

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.row .large-12.columns %table %thead %tr %th ID %th Email %tbody %tr %td= @user.id %td= @user.email

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.row .large-12.columns %table %tbody %tr %td= @user.id %td= @user.email %td= @user.claimed? ? 'Yes' : 'No'

.row .large-12.columns %table %tbody %tr %td= @user.id %td= @user.email %td= @user.claimed? ? 'Yes' : 'No' %td - if @user.last_sign_in_at.present? = "#{time_ago_in_words(@user.last_sign_in_at)} ago" - else Never :(

.row .large-10.columns %h1= @user.name %span= link_to 'Github', @user.github_link %span= link_to 'Twitter', @user.twitter_link .large-2.columns - if @user == current_user = link_to 'Edit', edit_user_path(@user), class: 'button' .row .large-12.columns %table %tbody %tr %td= @user.id %td= @user.email %td= @user.claimed? ? 'Yes' : 'No' %td - if @user.last_sign_in_at.present? = "#{time_ago_in_words(@user.last_sign_in_at)} ago" - else Never :(

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A Presenter is a class that has knowledge of view and logic - Ryan Bates

.row
 .large-12.columns
 %table
 %tbody
 %tr
 %td= @user.id
 %td= @user.email
 %td= @user.claimed? ? 'Yes' : 'No'
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words (@user.last_sign_in_at)} ago"
 - else
 Never :( .row
 .large-12.columns
 %table
 %tbody
 %tr
 %td= p.id
 %td= p.email
 %td= p.user_claimed?
 %td= p.last_signed_in Without Presenter With Presenter

- if @user.last_sign_in_at.present?
 = "#{time_ago_in_words (@user.last_sign_in_at)} ago"
 - else
 Never :( = @profile.last_signed_in

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Look at some messy, ugly code Refactor it step by step into a presenter Talk about some of the benefits of doing this

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Our Feature As a user, I want to be able to see my profile with identifying information about me

class User < ActiveRecord::Base def name "#{first_name} #{last_name}" end def github_link "https://github.com/#{github_handle}" end def twitter_link "https://twitter.com/#{twitter_handle}" end def claimed? last_sign_in_at.present? end end

class User < ActiveRecord::Base
 def name
 "#{first_name} #{last_name}"
 end
 
 def github_link
 "https://github.com/#{github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{twitter_handle}"
 end
 
 def claimed?
 last_sign_in_at.present?
 end
 end

Basic UsersController class UsersController < ApplicationController
 def show
 @user = User.find(params[:id])
 end
 end

.row
 .large-10.columns
 %h1= @user.name
 %span= link_to 'Github', @user.github_link
 %span= link_to 'Twitter', @user.twitter_link
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: 'button' %table %tbody
 %tr
 %td= @user.id
 %td= @user.email
 %td= @user.claimed? ? 'Yes' : 'No'
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words(@user.last_sign_in_at)} ago"
 - else
 Never :(

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.row
 .large-10.columns
 %h1= @user.name
 %span= link_to 'Github', @user.github_link
 %span= link_to 'Twitter', @user.twitter_link
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: 'button' %table %tbody
 %tr
 %td= @user.id
 %td= @user.email
 %td= @user.claimed? ? 'Yes' : 'No'
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words(@user.last_sign_in_at)} ago"
 - else
 Never :(

.row
 .large-10.columns
 %h1= @user.name
 %span= link_to 'Github', @user.github_link
 %span= link_to 'Twitter', @user.twitter_link
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: 'button' %table %tbody
 %tr
 %td= @user.id
 %td= @user.email
 %td= @user.claimed? ? 'Yes' : 'No'
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words(@user.last_sign_in_at)} ago"
 - else
 Never :(

Can’t we put it in a helper? 
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words(@user.last_sign_in_at)} ago"
 - else
 Never :(

Can’t we put it in a helper? What about in app/helpers/users_profile_helper.rb? 
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words(@user.last_sign_in_at)} ago"
 - else
 Never :(

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The HERO we need… Presenters!

Lets build a Presenter

User Presenter class UserPresenter
 attr_accessor :user
 
 def initialize(user)
 @user = user
 end
 end app/presenters/user_presenter.rb

class UsersController < ApplicationController
 def show
 @user = User.find(params[:id])
 @profile = UserPresenter.new(@user)
 end
 end

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.row
 .large-10.columns
 %h1= @user.name
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: 'button'

class User < ActiveRecord::Base has_many :posts def name
 "#{first_name} #{last_name}"
 end
 
 def github_link
 "https://github.com/#{github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{twitter_handle}"
 end
 
 def claimed?
 last_sign_in_at.present?
 end
 end

class User < ActiveRecord::Base has_many :posts def name
 "#{first_name} #{last_name}"
 end
 
 def github_link "https://github.com/#{github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{twitter_handle}"
 end
 
 def claimed?
 last_sign_in_at.present?
 end
 end class UserPresenter
 attr_accessor :user
 
 def initialize(user)
 @user = user
 end
 
 def name
 "#{user.first_name} #{user.last_name}"
 end
 end

class UserPresenter
 attr_accessor :user
 
 def initialize(user)
 @user = user
 end
 
 def name
 "#{user.first_name} #{user.last_name}" end
 def github_link
 "https://github.com/#{user.github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{user.twitter_handle}"
 end
 end class User < ActiveRecord::Base has_many :posts
 
 def github_link
 "https://github.com/#{github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{twitter_handle}"
 end
 
 def claimed?
 last_sign_in_at.present?
 end
 end

class User < ActiveRecord::Base has_many :posts
 
 def claimed?
 last_sign_in_at.present?
 end
 end class UserPresenter
 attr_accessor :user
 
 def initialize(user)
 @user = user
 end
 
 def name
 "#{user.first_name} #{user.last_name}" end
 def github_link
 "https://github.com/#{user.github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{user.twitter_handle}"
 end
 end

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class UserPresenter
 attr_accessor :user
 
 def initialize(user)
 @user = user
 end
 
 def name
 "#{user.first_name} #{user.last_name}" end
 def github_link
 "https://github.com/#{user.github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{user.twitter_handle}"
 end
 end

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.row
 .large-10.columns
 %h1= @user.name
 %span= link_to 'Github', @user.github_link
 %span= link_to 'Twitter', @user.twitter_link
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: ‘button'

.row
 .large-10.columns
 %h1= @profile.name
 %span= link_to 'Github', @profile.github_link
 %span= link_to 'Twitter', @profile.twitter_link
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: ‘button'

.row
 .large-10.columns
 %h1= @profile.name
 %span= link_to 'Github', @profile.github_link
 %span= link_to 'Twitter', @profile.twitter_link
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: ‘button'

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class UserPresenter
 attr_accessor :user
 
 def initialize(user)
 @user = user
 end … …
 
 private
 
 def method_missing(*args, &block)
 @user.send(*args, &block)
 end
 end

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @user == current_user = link_to 'Edit', edit_user_path(@user), class: 'button' %table %tbody %tr %td= @user.id %td= @user.email %td= @user.claimed? ? 'Yes' : 'No' %td - if @user.last_sign_in_at.present? = "#{time_ago_in_words(@user.last_sign_in_at)} ago" - else Never :(

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.claimed? ? 'Yes' : 'No' %td - if @profile.last_sign_in_at.present? = "#{time_ago_in_words(@profile.last_sign_in_at)} ago" - else Never :(

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.claimed? ? 'Yes' : 'No' %td - if @profile.last_sign_in_at.present? = "#{time_ago_in_words(@profile.last_sign_in_at)} ago" - else Never :(

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.claimed? ? 'Yes' : 'No' %td - if @profile.last_sign_in_at.present? = "#{time_ago_in_words(@profile.last_sign_in_at)} ago" - else Never :(

class UserPresenter
 attr_accessor :user
 ...
 
 def user_claimed?
 claimed? ? 'Yes' : 'No'
 end ...
 end

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.claimed? ? 'Yes' : 'No' %td - if @profile.last_sign_in_at.present? = "#{time_ago_in_words(@profile.last_sign_in_at)} ago" - else Never :(

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.user_claimed? %td - if @profile.last_sign_in_at.present? = "#{time_ago_in_words(@profile.last_sign_in_at)} ago" - else Never :(

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.user_claimed? %td - if @profile.last_sign_in_at.present? = "#{time_ago_in_words(@profile.last_sign_in_at)} ago" - else Never :(

class UserPresenter
 attr_accessor :user
 
 ...
 
 def user_claimed?
 claimed? ? 'Yes' : 'No'
 end
 
 def last_signed_in
 last_sign_in_at ? "#{time_ago_in_words(last_sign_in_at)} ago" : 'Never :('
 end 
 ...
 end

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.user_claimed? %td - if @profile.last_sign_in_at.present? = "#{time_ago_in_words(@profile.last_sign_in_at)} ago" - else Never :(

.row .large-10.columns %h1= @profile.name %span= link_to 'Github', @profile.github_link %span= link_to 'Twitter', @profile.twitter_link .large-2.columns - if @profile.user == current_user = link_to 'Edit', edit_user_path(@profile.user), class: 'button' %table %tbody %tr %td= @profile.id %td= @profile.email %td= @profile.user_claimed? %td= @profile.last_signed_in

class UserPresenter
 attr_accessor :user
 
 ...
 
 def user_claimed?
 claimed? ? 'Yes' : 'No'
 end
 
 def last_signed_in
 last_sign_in_at ? "#{time_ago_in_words(last_sign_in_at)} ago" : 'Never :('
 end 
 ...
 end

View Context view_context() public An instance of a view class ActionView::Rendering

class UserPresenter
 attr_accessor :user, :context
 
 def initialize(user, context)
 @user = user @context = context
 end …
 end class UsersController < ApplicationController
 def show
 @user = User.find(params[:id])
 @profile = UserPresenter.new(@user, view_context)
 end
 end

class UserPresenter
 attr_accessor :user, :context
 
 ...
 
 def user_claimed?
 claimed? ? 'Yes' : 'No'
 end
 
 def last_signed_in
 last_sign_in_at ? "#{context.time_ago_in_words(last_sign_in_at)} ago" : 'Never :('
 end 
 ...
 end

.row
 .large-12.columns %table
 %tbody
 %tr
 %td= @user.id
 %td= @user.email
 %td= @user.claimed? ? 'Yes' : 'No'
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words (@user.last_sign_in_at)} ago"
 - else
 Never :( .row
 .large-12.columns
 %table
 %tbody
 %tr
 %td= p.id
 %td= p.email
 %td= p.user_claimed?
 %td= p.last_signed_in

class UserPresenter
 attr_accessor :user, :context
 
 def initialize(user, context)
 @user = user @context = context
 end
 
 def name; end
 
 def github_link; end
 
 def twitter_link; end
 
 def user_claimed?; end
 
 def last_signed_in; end
 
 private
 
 def method_missing(*args, &block); end
 end

As a user, I want to be able to see my published posts On my profile page

Now our app needs Posts! class User < ActiveRecord::Base
 has_many :posts
 
 def can_edit?(post)
 id == post.user_id
 end
 end class Post < ActiveRecord::Base
 belongs_to :author, class_name: User scope :published, -> { where(published: true) }
 end

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.body.truncate(140)
 .posted-on
 = post.created_at.strftime('%B %e, %Y')
 
 = link_to 'Read More', post_path(@post)
 
 - if current_user.can_edit?(@post)
 = link_to 'Edit', edit_post_path(@post)
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.body.truncate(140)
 .posted-on
 = post.created_at.strftime('%B %e, %Y')
 
 = link_to 'Read More', post_path(@post)
 
 - if current_user.can_edit?(@post)
 = link_to 'Edit', edit_post_path(@post)
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.body.truncate(140)
 .posted-on
 = post.created_at.strftime('%B %e, %Y')
 
 = link_to 'Read More', post_path(@post)
 
 - if current_user.can_edit?(@post)
 = link_to 'Edit', edit_post_path(@post)
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.body.truncate(140)
 .posted-on
 = post.created_at.strftime('%B %e, %Y')
 
 = link_to 'Read More', post_path(@post)
 
 - if current_user.can_edit?(@post)
 = link_to 'Edit', edit_post_path(@post)
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

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Create PostPresenter class PostPresenter
 attr_accessor :post, :context
 
 def initialize(post, context)
 @post = post @context = context
 end
 end app/presenters/post_presenter.rb

class PostPresenter
 attr_accessor :post, :context
 
 def initialize(post, context)
 @post = post @context = context
 end private
 
 def method_missing(*args, &block)
 @post.send(*args, &block)
 end
 end

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class PostPresenter
 attr_accessor :post, :context
 
 def initialize(post, context)
 @post = post @context = context
 end ... private
 
 def method_missing(*args, &block)
 @post.send(*args, &block)
 end
 end class UserPresenter
 attr_accessor :user, :context
 
 def initialize(user, context)
 @user = user @context = context
 end ...
 
 private
 
 def method_missing(*args, &block)
 @user.send(*args, &block)
 end
 end

class BasePresenter
 
 end

class PostPresenter
 attr_accessor :post, :context
 
 def initialize(post, context)
 @post = post @context = context
 end ... private
 
 def method_missing(*args, &block)
 @post.send(*args, &block)
 end
 end class UserPresenter
 attr_accessor :user, :context
 
 def initialize(user, context)
 @user = user @context = context
 end ...
 
 private
 
 def method_missing(*args, &block)
 @user.send(*args, &block)
 end
 end

class BasePresenter attr_accessor :object, :context def initialize(object, context)
 @object, @context = object, context
 end
 private
 
 def method_missing(*args, &block)
 @object.send(*args, &block)
 end
 end

.row
 .large-10.columns
 %h1= @profile.name
 %span= link_to 'Github', @profile.github_link
 %span= link_to 'Twitter', @profile.twitter_link
 .large-2.columns
 - if @profile.user == current_user
 = link_to 'Edit', edit_user_path(@profile.user), class: 'button'

class UserPresenter < BasePresenter
 def user
 @object end def name
 "#{first_name} #{last_name}" end
 def github_link
 "https://github.com/#{github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{twitter_handle}"
 end
 end

class PostPresenter < BasePresenter
 def post
 @object end
 
 end class UserPresenter < BasePresenter
 def user
 @object end def name
 "#{first_name} #{last_name}" end
 def github_link
 "https://github.com/#{github_handle}"
 end
 
 def twitter_link
 "https://twitter.com/#{twitter_handle}"
 end
 
 end

Now we’re getting somewhere...

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.body.truncate(140)
 .posted-on
 = post.created_at.strftime('%B %e, %Y')
 
 = link_to 'Read More', post_path(post)
 
 - if current_user.can_edit?(post)
 = link_to 'Edit', edit_post_path(post)
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

class PostPresenter < BasePresenter
 def post
 @object
 end
 
 def short_body
 post.body.truncate(140)
 end
 
 def published_on
 post.created_at.strftime('%B %e, %Y')
 end
 
 def editable_link
 context.link_to('Edit', edit_post_path(@post)) if context.current_user.can_edit?(post)
 end
 end

class PostPresenter < BasePresenter
 def post
 @object
 end
 
 def short_body
 post.body.truncate(140)
 end
 
 def published_on
 post.created_at.strftime('%B %e, %Y')
 end
 
 def editable_link
 context.link_to('Edit', edit_post_path(post)) if context.current_user.can_edit?(post)
 end
 end

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.body.truncate(140)
 .posted-on
 = post.created_at.strftime('%B %e, %Y')
 
 = link_to 'Read More', post_path(post)
 
 - if current_user.can_edit?(post)
 = link_to 'Edit', edit_post_path(post)
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.map{|p| PostPresenter.new(post, view_context) }.each do | post|
 .post-block
 %h4= post.title
 .body-small
 = post.short_body
 .posted-on
 = post.published_on
 
 = link_to 'Read More', post_path(post)
 = post.editable_link.html_safe
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.map{|p| PostPresenter.new(post, view_context) }.each do | post|
 .post-block
 %h4= post.title
 .body-small
 = post.short_body
 .posted-on
 = post.published_on
 
 = link_to 'Read More', post_path(post)
 = post.editable_link.html_safe
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.map{|p| PostPresenter.new(post, view_context) }.each do | post|
 .post-block
 %h4= post.title
 .body-small
 = post.short_body
 .posted-on
 = post.published_on
 
 = link_to 'Read More', post_path(post)
 = post.editable_link.html_safe
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

class UserPresenter < BasePresenter
 ...
 
 def published_posts
 @published_posts ||= user.posts.published.map do |p| PostPresenter.new(p, context) end
 end
 
 def has_published_posts?
 published_posts.present?
 end 
 end

def published_posts
 @published_posts ||= user.posts.published.map do |p| PostPresenter.new(p, context) end
 end

- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.map{|p| PostPresenter.new(post, view_context) }.each do | post|
 .post-block
 %h4= post.title
 .body-small
 = post.short_body
 .posted-on
 = post.published_on
 
 = link_to 'Read More', post_path(post)
 = post.editable_link.html_safe
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.has_published_posts?
 .post-container
 - @profile.published_posts.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.short_body
 .posted-on
 = post.published_on
 
 = link_to 'Read More', post_path(post)
 = post.editable_link.html_safe
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

.row
 .large-10.columns
 %h1= @user.name
 %span= link_to 'Github', @user.github_link
 %span= link_to 'Twitter', @user.twitter_link
 .large-2.columns
 - if @user == current_user
 = link_to 'Edit', edit_user_path(@user), class: 'button medium radius'
 .row
 .large-12.columns
 %table
 %tbody
 %tr
 %td= @user.id
 %td= @user.email
 %td= @user.claimed? ? 'Yes' : 'No'
 %td
 - if @user.last_sign_in_at.present?
 = "#{time_ago_in_words(@user.last_sign_in_at)} ago"
 - else
 Never :(
 
 .- if @profile.posts.published.present?
 .post-container
 - @profile.posts.published.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.body.truncate(140)
 .posted-on
 = post.created_at.strftime('%B %e, %Y')
 
 = link_to 'Read More', post_path(@post)
 
 - if current_user.can_edit?(@post)
 = link_to 'Edit', edit_post_path(@post)
 - else
 = "#{@profile.first_name} hasn't posted anything yet."

- if @profile.has_published_posts?
 .post-container
 - @profile.published_posts.each do |post|
 .post-block
 %h4= post.title
 .body-small
 = post.short_body
 .posted-on
 = post.published_on
 
 = link_to 'Read More', post_path(@post)
 = post.editable_link.html_safe
 - else
 = "#{@profile.first_name} hasn't posted anything yet." .row .large-12.columns %table
 %tbody
 %tr
 %td= @profile.id
 %td= @profile.email
 %td= @profile.user_claimed?
 %td= @profile.last_signed_in .row
 .large-10.columns
 %h1= @profile.name
 %span= link_to 'Github', @profile.github_link
 %span= link_to 'Twitter', @profile.twitter_link
 .large-2.columns
 - if @profile.user == current_user
 = link_to 'Edit', edit_user_path(@profile.user), class: 'button'

- Testable - Maintainable - Simple - Clear - Encapsulated

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class UserNavigationPresenter < BasePresenter presents :user attr_accessor :partials def initialize(object, template, partials = []) super(object, template) @partials = partials end def render_search_bar h.render nav_path('search_bar') if partials.include?(:search_bar) end def render_nav_content partial = user.present? ? nav_path(current_user_nav) : nav_path('anonymous_user') h.render partial end def render_tabs h.content_tag :div, class: 'nav__tabs' do h.succeed(h.link_to 'Jobs', h.jobs_path, class: job_tab_css, disabled: user.blank?) do h.link_to 'Graduates', h.profiles_path, class: grad_tab_css end end end def render_job_button(css_class) h.link_to 'Post a Job', h.new_employer_job_path, class: "button small js-job-button #{css_class}" if user && user.can_message_students? end def render_form_later_button if defined?(h.step) && (['publish','complete'].include?(h.wizard_value(h.step))) h.link_to 'Exit and continue later', h.after_publish_path, class: "button small nav--steps__button-save" else h.link_to 'Save and continue later', '', class: "button small nav--steps__button-save js-save-and-exit-profile", data: { disable_with: 'Saving…' } end end end

class Admin::Instance::EnrollmentPresenter < ApplicationPresenter attr_accessor :enrollment def initialize(enrollment) @enrollment = enrollment end %W( created_at user_name user_first_name user_last_name localized_created_at user_email ).map do |meth| define_method(meth) { enrollment.send(meth) } end %W( confirmation_number quantity ticket_price total_paid front_row_subscriber? discount_code discount_link ).map do |meth| define_method(meth) { nil } end def user_email_link link_to enrollment.user_email, admin_user_path(enrollment.user) end def user_id enrollment.user.id end def enrollments [enrollment] end def user_waitlisted? true end end

.row .large-12.columns %strong Email: %a{href:"mailto: #{@instructor.email}"}= @instructor.email %br %strong Website: %a{href:@instructor.website}= @instructor.website %br %strong Phone: %a{href:"tel:#{@instructor.phone}"}= @instructor.phone if @instructor.phone.present? %br %strong Twitter: %a{href:"https://twitter.com/#{@instructor.twitter}"}= '@' + @instructor.twitter if @instructor.twitter.present? %br %strong LinkedIn: %a{href: @instructor.linkedin}= @instructor.linkedin if @instructor.linkedin.present? %br %strong Bio: = simple_format(@instructor.bio) unless @instructor.bio.blank? %br %strong Resume: - if @instructor.resume.present? = link_to "Download resume", @instructor.resume.url - else No resume on file %br %strong How They Found GA: = @instructor.hear_about_us.try :capitalize %br %strong Notes: = @instructor.hear_about_us_details

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Thank You Allison McMillan @allie_p Kevin Hopkins @devneck A Special Thank You to Courtney Jones for our awesome dragons!

Questions?