Feat/home page categories

app/controllers/groups_controller.rb

@@ -1,5 +1,10 @@
 class GroupsController < ApplicationController
   before_action { redirect_to splash_index_path unless user_signed_in? }
-  def index; end
+  def index
+    @categories = current_user.groups
+  end
+
   def show; end
+
+  def new; end
 end

app/models/entity.rb

@@ -4,4 +4,9 @@ class Entity < ApplicationRecord
   validates :name, presence: true
   validates :amount, presence: true
   validates :author, presence: true
+  after_save :update_group_transactions_counter
+
+  def update_group_transactions_counter
+    group.update(transactions_counter: group.entities.count)
+  end
 end

app/models/group.rb

@@ -2,4 +2,8 @@ class Group < ApplicationRecord
   belongs_to :user
   has_many :entities
   validates :name, presence: true
+  def initialize(attributes = {})
+    super
+    self.transactions_counter = 0
+  end
 end

app/views/app/_category_card.html.erb

@@ -0,0 +1,10 @@
+<div id="category-card" class="card">
+  <div class="card-body">
+    <a href="<%=group_path(category)%>">
+      <img class="stroke-2" src="<%=category.icon%>">
+      <h5 class="card-title"><%= category.name %></h5>
+      <p class="card-text">transactions: <%= category.transactions_counter %></p>
+      <p class="card-text">Total amount: <%=total_amount%></p>
+    </a>
+  </div>
+</div>

app/views/groups/index.html.erb

@@ -0,0 +1,5 @@
+<% @categories.each do |category| %>
+  <% @total_amount = category.entities.sum(:amount) %>
+  <%= render partial: 'app/category_card', locals: { category: category, total_amount: @total_amount } %>
+<% end %>
+<%= link_to 'New Group', new_group_path %>

app/views/groups/new.html.erb

@@ -0,0 +1 @@
+Placeholder for the new group form.

app/views/groups/show.html.erb

@@ -0,0 +1,3 @@
+This will display Entiteis for each group
+<%# go back button %>
+<%= link_to 'Back', groups_path %>

config/routes.rb

@@ -3,5 +3,6 @@
   root to: 'groups#index'
   resources :users
   resources :splash, only: [:index]
+  resources :entities
   resources :groups
 end

db/migrate/20231025194948_add_transactions_counter_to_groups.rb

@@ -0,0 +1,5 @@
+class AddTransactionsCounterToGroups < ActiveRecord::Migration[7.1]
+  def change
+    add_column :groups, :transactions_counter, :integer
+  end
+end