Add Quantity #edit and #update

app/controllers/quantities_controller.rb

@@ -26,6 +26,18 @@ class QuantitiesController < ApplicationController
     end
   end
 
+  def edit
+  end
+
+  def update
+    if @quantity.update(quantity_params.except(:parent_id))
+      @ancestors = @quantity.ancestors(include_self: true)
+      flash.now[:notice] = t('.success', quantity: @quantity)
+    else
+      render :edit
+    end
+  end
+
   def destroy
     @quantity.destroy!
     @ancestors = @quantity.ancestors

app/models/quantity.rb

@@ -84,7 +84,7 @@ class Quantity < ApplicationRecord
       end
   end
 
-  def ancestors
+  def ancestors(include_self: false)
     quantities = Quantity.arel_table
     ancestors = Arel::Table.new('ancestors')
 
@@ -93,7 +93,7 @@ class Quantity < ApplicationRecord
     # amount needed to set biggest negative depth to 0.
     Quantity.with_recursive(ancestors: [
       user.quantities.select(quantities[Arel.star], Arel::Nodes.build_quoted(0).as('depth'))
-        .where(id: parent_id),
+        .where(id: include_self ? id : parent_id),
       user.quantities.select(quantities[Arel.star], ancestors[:depth] - 1)
         .joins(quantities.create_join(
           ancestors, quantities.create_on(quantities[:id].eq(ancestors[:parent_id]))

app/views/quantities/edit.turbo_stream.erb

@@ -0,0 +1,13 @@
+<% ids = {row: dom_id(@quantity, :edit),
+          hidden_row: dom_id(@quantity),
+          link: nil,
+          form_tag: dom_id(@quantity, :edit, :form)} %>
+
+<%= turbo_stream.append :quantity_form do %>
+  <%- tabular_form_with model: @quantity, html: {id: ids[:form_tag]} do %>
+  <% end %>
+<% end %>
+
+<%= turbo_stream.hide ids[:hidden_row] %>
+<%= turbo_stream.remove ids[:row] %>
+<%= turbo_stream.after @quantity, partial: 'form', locals: ids -%>

app/views/quantities/update.turbo_stream.erb

@@ -0,0 +1,4 @@
+<%= turbo_stream.close_form dom_id(@quantity, :edit) %>
+<% @ancestors.map do |ancestor| %>
+  <%= turbo_stream.replace ancestor %>
+<% end %>

config/locales/en.yml

@@ -63,6 +63,8 @@ en:
       new_quantity: Add quantity
     create:
       success: Created new quantity "%{quantity}"
+    update:
+      success: Updated quantity "%{quantity}"
     destroy:
       success: Deleted quantity "%{quantity}"
   units: