Implement measurements create/destroy and index listing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/controllers/measurements_controller.rb

@@ -1,7 +1,13 @@
 class MeasurementsController < ApplicationController
+  before_action except: :index do
+    raise AccessForbidden unless current_user.at_least(:active)
+  end
+
   def index
-    @measurements = []
-    #@measurements = current_user.units.ordered.includes(:base, :subunits)
+    readouts = current_user.readouts.includes(:quantity, :unit).order(created_at: :desc)
+    @measurements = readouts.group_by(&:created_at).map do |created_at, grouped|
+      Measurement.new(created_at: created_at, readouts: grouped)
+    end
   end
 
   def new
@@ -9,8 +15,33 @@ class MeasurementsController < ApplicationController
   end
 
   def create
+    timestamp = Time.current
+    @readouts = readout_params.map do |rp|
+      r = current_user.readouts.new(rp)
+      r.created_at = timestamp
+      r
+    end
+
+    if @readouts.all?(&:valid?)
+      Readout.transaction { @readouts.each(&:save!) }
+      @measurement = Measurement.new(readouts: @readouts, created_at: timestamp)
+      flash.now[:notice] = t('.success')
+    else
+      render :new, status: :unprocessable_entity
+    end
   end
 
   def destroy
+    @measurement = Measurement.new(id: params[:id].to_i,
+                                   created_at: Time.at(params[:id].to_i))
+    current_user.readouts.where(created_at: @measurement.created_at).delete_all
+    @measurements_empty = current_user.readouts.empty?
+    flash.now[:notice] = t('.success')
+  end
+
+  private
+
+  def readout_params
+    params.require(:readouts).map { |r| r.permit(:quantity_id, :value, :unit_id) }
   end
 end

app/models/measurement.rb

@@ -1,3 +1,17 @@
 class Measurement
   include ActiveModel::Model
+
+  attr_accessor :readouts, :created_at
+
+  def id
+    created_at.to_i
+  end
+
+  def to_param
+    id.to_s
+  end
+
+  def persisted?
+    true
+  end
 end

app/views/measurements/_measurement.html.erb

@@ -0,0 +1,14 @@
+<%= tag.tr id: dom_id(measurement) do %>
+  <td><%= l measurement.created_at, format: :short %></td>
+  <td>
+    <% measurement.readouts.each do |readout| %>
+      <span><%= readout.quantity.name %>: <%= readout.value %> <%= readout.unit %></span>
+    <% end %>
+  </td>
+  <% if current_user.at_least(:active) %>
+    <td class="actions">
+      <%= image_button_to t('.destroy'), 'delete-outline', measurement_path(measurement),
+        method: :delete %>
+    </td>
+  <% end %>
+<% end %>

app/views/measurements/create.turbo_stream.erb

@@ -0,0 +1,5 @@
+<%= turbo_stream.update :flashes %>
+<%= turbo_stream.remove :measurement_form %>
+<%= turbo_stream.remove :no_items %>
+<%= turbo_stream.enable :new_measurement_link %>
+<%= turbo_stream.prepend :measurements, @measurement %>

app/views/measurements/destroy.turbo_stream.erb

@@ -0,0 +1,3 @@
+<%= turbo_stream.update :flashes %>
+<%= turbo_stream.remove @measurement %>
+<%= turbo_stream.append(:measurements, render_no_items) if @measurements_empty %>

config/locales/en.yml

@@ -88,6 +88,12 @@ en:
       select_quantity: select the measured quantities...
     index:
       new_measurement: Add measurement
+    create:
+      success: Measurement saved.
+    destroy:
+      success: Measurement deleted.
+    measurement:
+      destroy: Delete
   readouts:
     form:
       select_unit: ...