Fix budget allocation forms from resetting and clearing data on slow networks

app/controllers/budget_categories_controller.rb

@@ -1,12 +1,12 @@
 class BudgetCategoriesController < ApplicationController
+  before_action :set_budget
+
   def index
-    @budget = Current.family.budgets.find(params[:budget_id])
+    @budget_categories = @budget.budget_categories.includes(:category)
     render layout: "wizard"
   end
 
   def show
-    @budget = Current.family.budgets.find(params[:budget_id])
-
     @recent_transactions = @budget.entries
 
     if params[:id] == BudgetCategory.uncategorized.id
@@ -23,13 +23,25 @@ def show
 
   def update
     @budget_category = Current.family.budget_categories.find(params[:id])
-    @budget_category.update!(budget_category_params)
 
-    redirect_to budget_budget_categories_path(@budget_category.budget)
+    if @budget_category.update(budget_category_params)
+      respond_to do |format|
+        format.turbo_stream
+        format.html { redirect_to budget_budget_categories_path(@budget) }
+      end
+    else
+      render :index, status: :unprocessable_entity
+    end
   end
 
   private
     def budget_category_params
-      params.require(:budget_category).permit(:budgeted_spending)
+      params.require(:budget_category).permit(:budgeted_spending).tap do |params|
+        params[:budgeted_spending] = params[:budgeted_spending].presence || 0
+      end
+    end
+
+    def set_budget
+      @budget = Current.family.budgets.find(params[:budget_id])
     end
 end

app/javascript/controllers/auto_submit_form_controller.js

@@ -25,7 +25,7 @@ export default class extends Controller {
   }
 
   handleInput = (event) => {
-    const target = event.target
+    const target = event.target;
 
     clearTimeout(this.timeout);
     this.timeout = setTimeout(() => {
@@ -34,18 +34,18 @@ export default class extends Controller {
   };
 
   #debounceTimeout(element) {
-    if(element.dataset.autosubmitDebounceTimeout) {
+    if (element.dataset.autosubmitDebounceTimeout) {
       return Number.parseInt(element.dataset.autosubmitDebounceTimeout);
     }
 
     const type = element.type || element.tagName;
 
     switch (type.toLowerCase()) {
-      case 'input':
-      case 'textarea':
+      case "input":
+      case "textarea":
         return 500;
-      case 'select-one':
-      case 'select-multiple':
+      case "select-one":
+      case "select-multiple":
         return 0;
       default:
         return 500;

app/views/budget_categories/_allocation_progress.erb

@@ -1,26 +1,44 @@
 <%# locals: (budget:) %>
 
-<div class="space-y-2 mb-6">
+<div id="<%= dom_id(budget, :allocation_progress) %>" class="space-y-2 mb-6">
   <div class="flex items-center gap-2">
-    <div class="rounded-full w-1.5 h-1.5 <%= budget.allocated_spending > 0 ? "bg-gray-900" : "bg-gray-100" %>"></div>
+    <% if budget.available_to_allocate.negative? %>
+      <div class="rounded-full w-1.5 h-1.5 bg-red-500"></div>
+    <% else %>
+      <div class="rounded-full w-1.5 h-1.5 <%= budget.allocated_spending > 0 ? "bg-gray-900" : "bg-gray-100" %>"></div>
+    <% end %>
 
-    <p class="text-gray-500 text-sm">
-      <%= number_to_percentage(budget.allocated_percent, precision: 0) %> set
-    </p>
+    <% if budget.available_to_allocate.negative? %>
+      <p class="text-gray-900 text-sm">&gt; 100% set</p>
+    <% else %>
+      <p class="text-gray-500 text-sm">
+        <%= number_to_percentage(budget.allocated_percent, precision: 0) %> set
+      </p>
+    <% end %>
 
     <p class="ml-auto text-sm space-x-1">
-      <span class="text-gray-900"><%= format_money(budget.allocated_spending_money) %></span>
+      <span class="<%= budget.available_to_allocate.negative? ? "text-red-500" : "text-gray-900" %>"><%= format_money(budget.allocated_spending_money) %></span>
       <span class="text-gray-500"> / </span>
       <span class="text-gray-500"><%= format_money(budget.budgeted_spending_money) %></span>
     </p>
   </div>
 
   <div class="relative h-1.5 rounded-2xl bg-gray-100">
-    <div class="absolute inset-0 bg-gray-900 rounded-2xl" style="width: <%= budget.allocated_percent %>%;"></div>
+    <% if budget.available_to_allocate.negative? %>
+      <div class="absolute inset-0 bg-red-500 rounded-2xl" style="width: 100%;"></div>
+    <% else %>
+      <div class="absolute inset-0 bg-gray-900 rounded-2xl" style="width: <%= budget.allocated_percent %>%;"></div>
+    <% end %>
   </div>
 
   <div class="text-sm">
-    <span class="text-gray-900"><%= format_money(budget.available_to_allocate_money) %></span>
-    <span class="text-gray-500">left to allocate</span>
+    <% if budget.available_to_allocate.negative? %>
+      <p class="text-gray-500">
+        Budget exceeded by <span class="text-red-500"><%= format_money(budget.available_to_allocate_money.abs) %></span>
+      </p>
+    <% else %>
+      <span class="text-gray-900"><%= format_money(budget.available_to_allocate_money) %></span>
+      <span class="text-gray-500">left to allocate</span>
+    <% end %>
   </div>
 </div>

app/views/budget_categories/_budget_category_form.html.erb

@@ -12,14 +12,15 @@
   </div>
 
   <div class="ml-auto">
-    <%= form_with model: [budget_category.budget, budget_category], data: { controller: "auto-submit-form", auto_submit_form_trigger_event_value: "blur", turbo_frame: :_top } do |f| %>
+    <%= form_with model: [budget_category.budget, budget_category], data: { controller: "auto-submit-form preserve-focus" } do |f| %>
       <div class="form-field w-[120px]">
         <div class="flex items-center">
           <span class="text-gray-500 text-sm mr-2"><%= currency.symbol %></span>
           <%= f.number_field :budgeted_spending,
                             class: "form-field__input text-right [appearance:textfield] [&::-webkit-outer-spin-button]:appearance-none [&::-webkit-inner-spin-button]:appearance-none",
                             placeholder: "0",
                             step: currency.step,
+                            id: dom_id(budget_category, :budgeted_spending),
                             min: 0,
                             data: { auto_submit_form_target: "auto" } %>
         </div>

app/views/budget_categories/index.html.erb

@@ -21,14 +21,10 @@
         </div>
       <% else %>
         <div class="max-w-md mx-auto">
-          <% if @budget.available_to_allocate.negative? %>
-            <%= render "budget_categories/allocation_progress_overage", budget: @budget %>
-          <% else %>
-            <%= render "budget_categories/allocation_progress", budget: @budget %>
-          <% end %>
+          <%= render "budget_categories/allocation_progress", budget: @budget %>
 
           <div class="space-y-4 mb-4">
-            <% BudgetCategory::Group.for(@budget.budget_categories).sort_by(&:name).each do |group| %>
+            <% BudgetCategory::Group.for(@budget_categories).sort_by(&:name).each do |group| %>
               <div class="space-y-4">
                 <%= render "budget_categories/budget_category_form", budget_category: group.budget_category %>
 

app/views/budget_categories/update.turbo_stream.erb

@@ -0,0 +1 @@
+<%= turbo_stream.replace dom_id(@budget, :allocation_progress), partial: "budget_categories/allocation_progress", locals: { budget: @budget } %>