Group matching

app/controllers/admin/groups_controller.rb

@@ -4,9 +4,20 @@ class Admin::GroupsController < ApplicationController
   before_action :find_event
 
   def index
+    @event_groups = @event.event_groups
   end
 
   def generate
+    @attendees = @event.applications.application_selected.confirmed
+    @attendees.each_slice(6).with_index do |group, index|
+      event_group = EventGroup.create(event: @event, name: "Group #{index}")
+      group.each do |application|
+        event_group.applications << application
+      end
+    end
+
+    @event_groups = @event.event_groups
+
     redirect_to admin_event_groups_path(@event), notice: "Groups successfully generated"
   end
 

app/models/coach.rb

@@ -3,4 +3,5 @@ class Coach < ApplicationRecord
   belongs_to :user
   accepts_nested_attributes_for :user
   has_many :coach_applications
+  has_and_belongs_to_many :event_groups
 end

app/models/event.rb

@@ -1,6 +1,7 @@
 class Event < ApplicationRecord
   has_many :applications
   has_many :coach_applications
+  has_many :event_groups
   before_create :copy_templates
 
   validates :name, :place, :scheduled_at, :application_start, :application_end, :confirmation_date, :start_time, :end_time, presence: true
@@ -26,9 +27,9 @@ def name_and_date
   end
 
   def has_groups?
-    false
+    !event_groups.empty?
   end
-  
+
 private
 
   def right_order_of_dates

app/models/event_group.rb

@@ -0,0 +1,5 @@
+class EventGroup < ApplicationRecord
+  belongs_to :event
+  has_and_belongs_to_many :coaches
+  has_and_belongs_to_many :applications, join_table: "event_groups_applications"
+end

app/views/admin/groups/index.html.erb

@@ -1,5 +1,27 @@
 <% if @event.has_groups? %>
 has Groups
+
+<% @event_groups.each do |event_group| %>
+<h2><%= event_group.name %></h2>
+<table>
+  <thead>
+    <tr>
+      <th>Attendees</th>
+      <th>Coaches</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>
+        <%= event_group.applications.map(&:name).join(", ") %>
+      </td>
+      <td>
+      </td>
+    </tr>
+  </tbody>
+</table>
+<%end %>
+
 <% else %>
   <%= button_to "Generate groups", generate_admin_event_groups_path(@event), method: :post %>
 <% end %>

db/migrate/20200423182041_change_event_group_coaches_to_event_groups_coaches.rb

@@ -0,0 +1,5 @@
+class ChangeEventGroupCoachesToEventGroupsCoaches < ActiveRecord::Migration[5.2]
+  def change
+    rename_table :event_group_coaches, :event_groups_coaches
+  end
+end

db/migrate/20200423182618_change_event_group_attendees_to_event_groups_applicants.rb

@@ -0,0 +1,5 @@
+class ChangeEventGroupAttendeesToEventGroupsApplicants < ActiveRecord::Migration[5.2]
+  def change
+    rename_table :event_group_attendees, :event_groups_applications
+  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: 2020_02_24_192634) do
+ActiveRecord::Schema.define(version: 2020_04_23_182618) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -71,30 +71,30 @@
     t.index ["user_id"], name: "index_coaches_on_user_id"
   end
 
-  create_table "event_group_attendees", force: :cascade do |t|
-    t.bigint "application_id"
-    t.bigint "event_group_id"
+  create_table "event_groups", force: :cascade do |t|
+    t.bigint "event_id"
+    t.string "name"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["application_id"], name: "index_event_group_attendees_on_application_id"
-    t.index ["event_group_id"], name: "index_event_group_attendees_on_event_group_id"
+    t.index ["event_id"], name: "index_event_groups_on_event_id"
   end
 
-  create_table "event_group_coaches", force: :cascade do |t|
-    t.bigint "coach_application_id"
+  create_table "event_groups_applications", force: :cascade do |t|
+    t.bigint "application_id"
     t.bigint "event_group_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["coach_application_id"], name: "index_event_group_coaches_on_coach_application_id"
-    t.index ["event_group_id"], name: "index_event_group_coaches_on_event_group_id"
+    t.index ["application_id"], name: "index_event_groups_applications_on_application_id"
+    t.index ["event_group_id"], name: "index_event_groups_applications_on_event_group_id"
   end
 
-  create_table "event_groups", force: :cascade do |t|
-    t.bigint "event_id"
-    t.string "name"
+  create_table "event_groups_coaches", force: :cascade do |t|
+    t.bigint "coach_application_id"
+    t.bigint "event_group_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["event_id"], name: "index_event_groups_on_event_id"
+    t.index ["coach_application_id"], name: "index_event_groups_coaches_on_coach_application_id"
+    t.index ["event_group_id"], name: "index_event_groups_coaches_on_event_group_id"
   end
 
   create_table "events", id: :serial, force: :cascade do |t|
@@ -149,9 +149,9 @@
 
   add_foreign_key "coach_applications", "coaches"
   add_foreign_key "coach_applications", "events"
-  add_foreign_key "event_group_attendees", "applications"
-  add_foreign_key "event_group_attendees", "event_groups"
-  add_foreign_key "event_group_coaches", "coach_applications"
-  add_foreign_key "event_group_coaches", "event_groups"
   add_foreign_key "event_groups", "events"
+  add_foreign_key "event_groups_applications", "applications"
+  add_foreign_key "event_groups_applications", "event_groups"
+  add_foreign_key "event_groups_coaches", "coach_applications"
+  add_foreign_key "event_groups_coaches", "event_groups"
 end