add ability to keep metacode focus

app/controllers/users_controller.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 class UsersController < ApplicationController
-  before_action :require_user, only: [:edit, :update, :updatemetacodes]
+  before_action :require_user, only: [:edit, :update, :updatemetacodes, :update_metacode_focus]
 
   respond_to :html, :json
 
@@ -92,6 +92,16 @@ class UsersController < ApplicationController
     end
   end
 
+  # PUT /user/update_metacode_focus
+  def update_metacode_focus
+    @user = current_user
+    @user.settings.metacode_focus = params[:value]
+    @user.save
+    respond_to do |format|
+      format.json { render json: { success: "success" }}
+    end
+  end
+
   private
 
   def user_params

app/helpers/application_helper.rb

@@ -22,7 +22,24 @@ module ApplicationHelper
                  else
                    Metacode.where(id: @m).to_a
                  end
-    @metacodes.sort! { |m1, m2| m2.name.downcase <=> m1.name.downcase }.rotate!(-1)
+
+    focus_code = user_metacode()
+    if focus_code != nil && @metacodes.index{|m| m.id == focus_code.id} == nil
+      @metacodes.push(focus_code)
+    end
+
+    @metacodes
+      .sort! { |m1, m2| m2.name.downcase <=> m1.name.downcase }
+
+    if focus_code != nil
+      @metacodes.rotate!(@metacodes.index{|m| m.id == focus_code.id})
+    else
+      @metacodes.rotate!(-1)
+    end
+  end
+
+  def user_metacode
+    current_user.settings.metacode_focus ? Metacode.find(current_user.settings.metacode_focus.to_i) : nil
   end
 
   def user_most_used_metacodes

app/models/mapping.rb

@@ -8,10 +8,6 @@ class Mapping < ApplicationRecord
   belongs_to :user
   belongs_to :updated_by, class_name: 'User'
 
-  validates :xloc, presence: true,
-                   unless: proc { |m| m.mappable_type == 'Synapse' }
-  validates :yloc, presence: true,
-                   unless: proc { |m| m.mappable_type == 'Synapse' }
   validates :map, presence: true
   validates :mappable, presence: true
 

app/models/user_preference.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 class UserPreference
-  attr_accessor :metacodes
+  attr_accessor :metacodes, :metacode_focus
 
   def initialize
     array = []
@@ -15,5 +15,6 @@ class UserPreference
       end
     end
     @metacodes = array
+    @metacode_focus = array[0]
   end
 end

app/policies/user_policy.rb

@@ -28,6 +28,10 @@ class UserPolicy < ApplicationPolicy
     update?
   end
 
+  def update_metacode_focus?
+    update?
+  end
+
   # API action
   def current?
     user == record

config/routes.rb

@@ -105,6 +105,7 @@ Metamaps::Application.routes.draw do
     end
   end
   post 'user/updatemetacodes', to: 'users#updatemetacodes', as: :updatemetacodes
+  post 'user/update_metacode_focus', to: 'users#update_metacode_focus'
 
   namespace :api, path: '/api', default: { format: :json } do
     namespace :v2, path: '/v2' do