added home views

app/controllers/data_views_controller.rb

@@ -7,6 +7,16 @@ class DataViewsController < ApplicationController
     @data_views = DataView.find_viewable(current_user)
   end
 
+  # GET /data_views/home.json
+  def home
+    # return the user's home view if present
+    @data_view = current_user.home_data_view
+    if @data_view.nil?
+      head :not_found
+      return
+    end
+  end
+
   # POST /data_views.json
   def create
     @service = CreateDataView.new()

app/controllers/db_elements_controller.rb

@@ -32,6 +32,16 @@ class DbElementsController < ApplicationController
     @service.run(req_elements, start_time, end_time)
     @start_time = @service.start_time
     @end_time = @service.end_time
+
+    # update the user's home view if a data view instance is provided
+    if params[:redux_json]!=nil
+      service = CreateDataView.new()
+      service.run({redux_json: params[:redux_json]},
+        nil, current_user, home_view=true)
+      unless service.success?
+        Rails.logger.warn("error creating home view for #{current_user.id}")
+      end
+    end
     render status: @service.success? ? :ok : :unprocessable_entity
   end
 end

app/models/user.rb

@@ -11,7 +11,9 @@ class User < ActiveRecord::Base
   has_many :memberships
   has_many :user_groups, through: :memberships
   has_many :data_views
-  
+  belongs_to :home_data_view, class_name: "DataView",
+    foreign_key: "home_data_view_id", dependent: :destroy
+
   #---Validations-----
   validates :first_name, :last_name, :email, :presence => true
   validates :email, :uniqueness => true

app/services/data_view/create_data_view.rb

@@ -5,9 +5,21 @@ class CreateDataView
   include ServiceStatus
   attr_reader :data_view
 
-  def run(data_view_params, stream_ids, user)
-    #retrieve nilms for every stream
+  def run(data_view_params, stream_ids, user, home_view=false)
+    if home_view
+      @data_view = DataView.create(
+        data_view_params.merge(
+        {name: 'home_view', visibility: 'hidden', owner: user}))
+      user.home_data_view.destroy unless user.home_data_view.nil?
+      user.update(home_data_view: @data_view)
+      return self
+    end
+    # normal data view
+    @data_view = DataView.new(data_view_params.merge({owner: user}))
+
+    # build nilm associations for permissions
     begin
+      #retrieve nilms for every stream in this view
       db_ids = DbStream
         .find(stream_ids)
         .pluck(:db_id)
@@ -19,14 +31,11 @@ class CreateDataView
       self.add_errors(['invalid stream_ids'])
       return self
     end
-
-    @data_view = DataView.create(data_view_params)
-    @data_view.nilm_ids = nilm_ids
-    @data_view.owner = user
     unless @data_view.save
       self.add_errors(@data_view.errors.full_messages)
       return self
     end
+    @data_view.nilm_ids = nilm_ids
     self.set_notice('created data view')
     self
   end

app/views/data_views/home.json.jbuilder

+json.extract! @data_view, *DataView.json_keys
+json.owner current_user==@data_view.owner

config/routes.rb

@@ -5,7 +5,11 @@ Rails.application.routes.draw do
       put 'refresh'
     end
   end
-  resources :data_views
+  resources :data_views do
+    collection do
+      get 'home' #retrieve a user's home data view
+    end
+  end
   resources :dbs, only: [:show, :update]
   resources :db_folders, only: [:show, :update]
   resources :db_streams, only: [:update] do

db/migrate/20170525004328_add_home_data_view_to_user.rb

+class AddHomeDataViewToUser < ActiveRecord::Migration[5.1]
+  def change
+    add_column :users, :home_data_view_id, :number
+  end
+end

db/migrate/20170525005625_change_key_to_integer.rb

+class ChangeKeyToInteger < ActiveRecord::Migration[5.1]
+  def change
+    change_column :users, :home_data_view_id, :integer
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170524005258) do
+ActiveRecord::Schema.define(version: 20170525005625) do
 
   create_table "data_views", force: :cascade do |t|
     t.integer "user_id"
@@ -166,6 +166,7 @@ ActiveRecord::Schema.define(version: 20170524005258) do
     t.integer "invited_by_id"
     t.string "invited_by_type"
     t.string "invitation_url"
+    t.integer "home_data_view_id"
     t.index ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true
     t.index ["email"], name: "index_users_on_email", unique: true
     t.index ["invitation_token"], name: "index_users_on_invitation_token", unique: true

spec/controllers/data_views_controller_spec.rb

@@ -45,6 +45,37 @@ RSpec.describe DataViewsController, type: :request do
     end
   end
 
+  describe 'GET home' do
+    context 'with authenticated user' do
+      it 'returns user home data view' do
+        user1 = create(:user)
+        dv1 = create(:data_view)
+        user1.update(home_data_view: dv1)
+        user2 = create(:user)
+        dv2 = create(:data_view)
+        user2.update(home_data_view: dv2)
+        #user1 gets his view
+        @auth_headers = user1.create_new_auth_token
+        get "/data_views/home.json", headers: @auth_headers
+        expect(response).to have_http_status(:ok)
+        body = JSON.parse(response.body)
+        expect(body["id"]).to eq dv1.id
+        #user2 gets his view
+        @auth_headers = user2.create_new_auth_token
+        get "/data_views/home.json", headers: @auth_headers
+        expect(response).to have_http_status(:ok)
+        body = JSON.parse(response.body)
+        expect(body["id"]).to eq dv2.id
+      end
+      it 'returns 404:not_found if data view is unset' do
+        user = create(:user)
+        @auth_headers = user.create_new_auth_token
+        get "/data_views/home.json", headers: @auth_headers
+        expect(response).to have_http_status(:not_found)
+        expect(response.body).to be_empty
+      end
+    end
+  end
   describe 'POST create' do
     context 'with authenticated user' do
       it 'creates a dataview' do

spec/controllers/db_elements_controller_spec.rb

@@ -17,7 +17,7 @@ RSpec.describe DbElementsController, type: :request do
         stream.db_elements << @elem1
         stream.db_elements << @elem2
       end
-      it 'returns elements with data' do
+      it "returns elements with data and updates the user's home view" do
 
 
         @service_data = [{ id: @elem1.id, data: 'mock1' },
@@ -33,12 +33,14 @@ RSpec.describe DbElementsController, type: :request do
         @auth_headers = user1.create_new_auth_token
         get '/db_elements/data.json',
             params: { elements: [@elem1.id, @elem2.id].to_json,
-                      start_time: 0, end_time: 100 },
+                      start_time: 0, end_time: 100, redux_json: 'new home view' },
             headers: @auth_headers
         expect(response).to have_http_status(:ok)
         # check to make sure JSON renders the elements
         body = JSON.parse(response.body)
         expect(body['data'].count).to eq(2)
+        # check the user home view
+        expect(user1.reload.home_data_view.redux_json).to eq('new home view')
       end
       it 'returns error if time bounds are invalid' do
         @auth_headers = user1.create_new_auth_token

spec/models/user_spec.rb

@@ -7,6 +7,7 @@ RSpec.describe User, type: :model do
     specify { expect(user).to respond_to(:first_name) }
     specify { expect(user).to respond_to(:last_name) }
     specify { expect(user).to respond_to(:email) }
+    specify { expect(user).to respond_to(:home_data_view)}
   end
 
   it 'responds to name' do

spec/services/data_view/create_data_view_spec.rb

@@ -10,20 +10,39 @@ describe 'CreateDataView service' do
     create(:db_stream, db: db),
     create(:db_stream, db: db)]}
 
-  it 'creates a dataview' do
-    params = {
-      name: 'test',
-      visibility: 'public',
-      description: '',
-      image: '',
-      redux_json: ''}
-    stream_ids = viewed_streams.map {|x| x.id}
-    service = CreateDataView.new
-    service.run(params, stream_ids, viewer)
-    expect(service.success?).to be true
-    expect(DataView.count).to eq(1)
-    expect(nilm.data_views.count).to eq(1)
-    expect(viewer.data_views.count).to eq(1)
+  describe 'successfully' do
+    before do
+      @params = {
+        name: 'test',
+        visibility: 'public',
+        description: '',
+        image: '',
+        redux_json: ''}
+      @stream_ids = viewed_streams.map {|x| x.id}
+      @service = CreateDataView.new
+    end
+    it 'creates normal data views' do
+      @service.run(@params, @stream_ids, viewer)
+      expect(@service.success?).to be true
+      expect(DataView.count).to eq(1)
+      expect(nilm.data_views.count).to eq(1)
+      expect(viewer.data_views.count).to eq(1)
+    end
+
+    it 'creates user home views' do
+      #new home view replaces the previous one
+      viewer.update(home_data_view: create(:data_view))
+      expect(DataView.count).to eq(1)
+      #now add the new one
+      @service.run(@params, @stream_ids, viewer, home_view=true)
+      expect(@service.success?).to be true
+      #previous view should be deleted
+      expect(DataView.count).to eq(1)
+      view = DataView.first
+      expect(view.visibility).to eq 'hidden'
+      expect(viewer.home_data_view).to eq(view)
+
+    end
   end
 
   it 'returns error if dataview is not valid' do