Expenses scaffold

app/controllers/expenses_controller.rb

@@ -0,0 +1,70 @@
+class ExpensesController < ApplicationController
+  before_action :set_expense, only: %i[ show edit update destroy ]
+
+  # GET /expenses or /expenses.json
+  def index
+    @expenses = Expense.all
+  end
+
+  # GET /expenses/1 or /expenses/1.json
+  def show
+  end
+
+  # GET /expenses/new
+  def new
+    @expense = Expense.new
+  end
+
+  # GET /expenses/1/edit
+  def edit
+  end
+
+  # POST /expenses or /expenses.json
+  def create
+    @expense = Expense.new(expense_params)
+
+    respond_to do |format|
+      if @expense.save
+        format.html { redirect_to expense_url(@expense), notice: "Expense was successfully created." }
+        format.json { render :show, status: :created, location: @expense }
+      else
+        format.html { render :new, status: :unprocessable_entity }
+        format.json { render json: @expense.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /expenses/1 or /expenses/1.json
+  def update
+    respond_to do |format|
+      if @expense.update(expense_params)
+        format.html { redirect_to expense_url(@expense), notice: "Expense was successfully updated." }
+        format.json { render :show, status: :ok, location: @expense }
+      else
+        format.html { render :edit, status: :unprocessable_entity }
+        format.json { render json: @expense.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /expenses/1 or /expenses/1.json
+  def destroy
+    @expense.destroy!
+
+    respond_to do |format|
+      format.html { redirect_to expenses_url, notice: "Expense was successfully destroyed." }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_expense
+      @expense = Expense.find(params[:id])
+    end
+
+    # Only allow a list of trusted parameters through.
+    def expense_params
+      params.require(:expense).permit(:name, :amount, :pricing_type)
+    end
+end

app/helpers/expenses_helper.rb

@@ -0,0 +1,2 @@
+module ExpensesHelper
+end

app/models/expense.rb

@@ -0,0 +1,2 @@
+class Expense < ApplicationRecord
+end

app/views/expenses/_expense.html.erb

@@ -0,0 +1,17 @@
+<div id="<%= dom_id expense %>">
+  <p>
+    <strong>Name:</strong>
+    <%= expense.name %>
+  </p>
+
+  <p>
+    <strong>Amount:</strong>
+    <%= expense.amount %>
+  </p>
+
+  <p>
+    <strong>Pricing type:</strong>
+    <%= expense.pricing_type %>
+  </p>
+
+</div>

app/views/expenses/_form.html.erb

@@ -0,0 +1,32 @@
+<%= form_with(model: expense) do |form| %>
+  <% if expense.errors.any? %>
+    <div style="color: red">
+      <h2><%= pluralize(expense.errors.count, "error") %> prohibited this expense from being saved:</h2>
+
+      <ul>
+        <% expense.errors.each do |error| %>
+          <li><%= error.full_message %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div>
+    <%= form.label :name, style: "display: block" %>
+    <%= form.text_field :name %>
+  </div>
+
+  <div>
+    <%= form.label :amount, style: "display: block" %>
+    <%= form.text_field :amount %>
+  </div>
+
+  <div>
+    <%= form.label :pricing_type, style: "display: block" %>
+    <%= form.text_field :pricing_type %>
+  </div>
+
+  <div>
+    <%= form.submit %>
+  </div>
+<% end %>

app/views/expenses/edit.html.erb

@@ -0,0 +1,10 @@
+<h1>Editing expense</h1>
+
+<%= render "form", expense: @expense %>
+
+<br>
+
+<div>
+  <%= link_to "Show this expense", @expense %> |
+  <%= link_to "Back to expenses", expenses_path %>
+</div>

app/views/expenses/index.html.erb

@@ -0,0 +1,14 @@
+<p style="color: green"><%= notice %></p>
+
+<h1>Expenses</h1>
+
+<div id="expenses">
+  <% @expenses.each do |expense| %>
+    <%= render expense %>
+    <p>
+      <%= link_to "Show this expense", expense %>
+    </p>
+  <% end %>
+</div>
+
+<%= link_to "New expense", new_expense_path %>

app/views/expenses/new.html.erb

@@ -0,0 +1,9 @@
+<h1>New expense</h1>
+
+<%= render "form", expense: @expense %>
+
+<br>
+
+<div>
+  <%= link_to "Back to expenses", expenses_path %>
+</div>

app/views/expenses/show.html.erb

@@ -0,0 +1,10 @@
+<p style="color: green"><%= notice %></p>
+
+<%= render @expense %>
+
+<div>
+  <%= link_to "Edit this expense", edit_expense_path(@expense) %> |
+  <%= link_to "Back to expenses", expenses_path %>
+
+  <%= button_to "Destroy this expense", @expense, method: :delete %>
+</div>

config/routes.rb

@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  resources :expenses
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
 
   # Reveal health status on /up that returns 200 if the app boots with no exceptions, otherwise 500.

db/migrate/20240711175425_create_expenses.rb

@@ -0,0 +1,12 @@
+class CreateExpenses < ActiveRecord::Migration[7.1]
+  def change
+    create_enum :pricing_types, ["fixed", "per_person"]
+    create_table :expenses, id: :uuid do |t|
+      t.string :name
+      t.decimal :amount
+      t.enum :pricing_type, enum_type: :pricing_types, default: "fixed", null: false
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,8 +10,20 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 0) do
+ActiveRecord::Schema[7.1].define(version: 2024_07_11_175425) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
+  # Custom types defined in this database.
+  # Note that some types may not work with other database engines. Be careful if changing database.
+  create_enum "pricing_types", ["fixed", "per_person"]
+
+  create_table "expenses", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.string "name"
+    t.decimal "amount"
+    t.enum "pricing_type", default: "fixed", null: false, enum_type: "pricing_types"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
 end

spec/models/expense_spec.rb

@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe Expense, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end