add backend support for profile pictures

Gemfile

@@ -23,6 +23,7 @@ gem 'gravatarify', '~> 3.0.0'
 gem 'slodown', '~> 0.1.3'
 gem 'scenic', '~> 1.2.0'
 gem 'awesome_nested_set', '~> 3.1.1'
+gem 'paperclip', "~> 5.0.0"
 
 gem 'omniauth', '~> 1.2.2'
 gem 'omniauth-facebook', '~> 1.6.0'

Gemfile.lock

@@ -82,6 +82,10 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
+    climate_control (0.0.3)
+      activesupport (>= 3.0)
+    cocaine (0.5.8)
+      climate_control (>= 0.0.3, < 1.0)
     coderay (1.1.0)
     coffee-rails (4.0.1)
       coffee-script (>= 2.2.0)
@@ -158,6 +162,7 @@ GEM
       mime-types (>= 1.16, < 4)
     method_source (0.8.2)
     mime-types (2.99.2)
+    mimemagic (0.3.2)
     mini_portile2 (2.1.0)
     minitest (5.9.0)
     multi_json (1.10.1)
@@ -193,6 +198,12 @@ GEM
     omniauth-orcid (0.6)
       omniauth (~> 1.0)
       omniauth-oauth2 (~> 1.1)
+    paperclip (5.0.0)
+      activemodel (>= 4.2.0)
+      activesupport (>= 4.2.0)
+      cocaine (~> 0.5.5)
+      mime-types
+      mimemagic (~> 0.3.0)
     pg (0.18.2)
     pkg-config (1.1.7)
     polyamorous (1.2.0)
@@ -363,6 +374,7 @@ DEPENDENCIES
   omniauth-github (~> 1.1.2)
   omniauth-google-oauth2 (~> 0.2.5)
   omniauth-orcid (~> 0.6.0)
+  paperclip (~> 5.0.0)
   pg (~> 0.18.2)
   pry
   pry-nav
@@ -381,4 +393,4 @@ DEPENDENCIES
   yajl-ruby (~> 1.2.1)
 
 BUNDLED WITH
-   1.11.2
+   1.12.5

app/controllers/users_controller.rb

@@ -25,6 +25,7 @@ def events
   def update
     user = get_user
     authorize user
+    binding.pry
     status = if user.update_attributes(user_attributes)
                :ok
              else
@@ -72,6 +73,6 @@ def get_user
   end
 
   def user_attributes
-    params.permit(:email, :url, :username, :name, :area_of_expertise, :orcid, :twitter_handle, :facebook_profile, :linkedin_profile, :bio, :signup_complete, :accepted_license)
+    params.permit(:email, :url, :username, :name, :area_of_expertise, :orcid, :twitter_handle, :facebook_profile, :linkedin_profile, :bio, :signup_complete, :accepted_license, :profile_pic_file_name, :profile_pic_content_type, :profile_pic_file_size, :profile_pic_updated_at)
   end
 end

app/models/user.rb

@@ -18,6 +18,23 @@ class User < ActiveRecord::Base
   validate :username_is_not_role_name
   after_create :assign_default_username
   after_save :check_for_signup_completion
+  after_save :check_for_pic_upload
+  has_attached_file :profile_pic,
+   :styles => {
+      "x128" => "128x128",
+      "x64" => "64x64",
+      "x32" => "32x32",
+      "x14" => "14x14"},
+    :url => "/profile-images/:style/:basename.:extension",
+    :path => ":rails_root/public/profile-images/:style/:basename.:extension",
+    :default_url => "/profile-images/:style/default.png",
+    if: :profile_pic.present?
+  validates_attachment_content_type :profile_pic, content_type: /\Aimage/,
+    unless: :profile_pic_content_type
+  validates_attachment_size :profile_pic, less_than: 2.megabytes, 
+    unless: :profile_pic_file_size
+  validates_attachment_file_name :profile_pic, matches: [/png\z/, /jpe?g\z/], 
+    unless: :profile_pic_file_name
 
   def self.datatable_scope
     joins('LEFT OUTER JOIN events ON events.originating_user_id = users.id')
@@ -144,4 +161,11 @@ def check_for_signup_completion
       self.save
     end
   end
+
+  def check_for_pic_upload
+    if self.errors.none? && self.profile_pic.present? 
+      self.uploaded_pic = true
+      self.save
+    end
+  end
 end

app/presenters/user_presenter.rb

@@ -33,7 +33,12 @@ def as_json(options = {})
         bio: user.bio,
         featured_expert: user.featured_expert,
         accepted_license: user.accepted_license,
-        signup_complete: user.signup_complete
+        signup_complete: user.signup_complete,
+        profile_pic_file_name: user.profile_pic_file_name,
+        profile_pic_content_type: user.profile_pic_content_type,
+        profile_pic_file_size: user.profile_pic_file_size,
+        profile_pic_updated_at: user.profile_pic_updated_at,
+        uploaded_pic: user.uploaded_pic
       }.merge(additional_attributes)
     end
   end

db/migrate/20161017192146_add_profile_pic_to_users.rb

@@ -0,0 +1,6 @@
+class AddProfilePicToUsers < ActiveRecord::Migration
+  def change
+    add_attachment :users, :profile_pic 
+    add_column :users, :uploaded_pic, :boolean, default: false
+  end
+end