Refactor nutrients units array as Collection

app/Http/Controllers/JournalEntryController.php

@@ -97,7 +97,7 @@ class JournalEntryController extends Controller
         return view('journal-entries.create')
             ->with('ingredients', $ingredients)
             ->with('meals', JournalEntry::$meals)
-            ->with('units', Nutrients::$units)
+            ->with('units', Nutrients::units()->toArray())
             ->with('default_date', Carbon::createFromFormat('Y-m-d', $date));
     }
 
@@ -109,7 +109,7 @@ class JournalEntryController extends Controller
         $date = $request->date ?? Carbon::now()->toDateString();
         return view('journal-entries.create-from-nutrients')
             ->with('meals', JournalEntry::$meals)
-            ->with('units', Nutrients::$units)
+            ->with('units', Nutrients::units()->toArray())
             ->with('default_date', Carbon::createFromFormat('Y-m-d', $date));
     }
 

app/Http/Controllers/RecipeController.php

@@ -167,7 +167,7 @@ class RecipeController extends Controller
             ->with('recipe_tags', $recipe_tags)
             ->with('ingredients_list', new Collection([...$ingredients, ...$separators]))
             ->with('steps', $steps)
-            ->with('ingredients_units', Nutrients::$units);
+            ->with('ingredients_units', Nutrients::units()->toArray());
     }
 
     /**

app/Support/Nutrients.php

@@ -10,14 +10,43 @@ class Nutrients
 {
     public static float $gramsPerOunce = 28.349523125;
 
-    public static array $units = [
-        'cup' => ['value' => 'cup', 'label' => 'cup'],
-        'gram' => ['value' => 'gram', 'label' => 'grams'],
-        'oz' => ['value' => 'oz', 'label' => 'oz'],
-        'serving' => ['value' => 'serving', 'label' => 'servings'],
-        'tbsp' => ['value' => 'tbsp', 'label' => 'tbsp.'],
-        'tsp' => ['value' => 'tsp', 'label' => 'tsp.'],
-    ];
+    /**
+     * Get all supported units and metadata.
+     *
+     * Each entry has two keys:
+     *  - value: Machine name for the unit.
+     *  - label: Human-readable name for the unit.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    public static function units(): Collection {
+        return new Collection([
+            'cup' => [
+                'value' => 'cup',
+                'label' => 'cup'
+            ],
+            'gram' => [
+                'value' => 'gram',
+                'label' => 'gram'
+            ],
+            'oz' => [
+                'value' => 'oz',
+                'label' => 'oz'
+            ],
+            'serving' => [
+                'value' => 'serving',
+                'label' => 'serving'
+            ],
+            'tbsp' => [
+                'value' => 'tbsp',
+                'label' => 'tbsp.'
+            ],
+            'tsp' => [
+                'value' => 'tsp',
+                'label' => 'tsp.'
+            ],
+        ]);
+    }
 
     /**
      * Get all trackable "nutrients" (calories are not technically a nutrient).

database/migrations/2021_01_22_212856_create_ingredient_amounts_table.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Support\Nutrients;
 use Illuminate\Database\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
@@ -18,7 +19,7 @@ class CreateIngredientAmountsTable extends Migration
             $table->unsignedInteger('ingredient_id');
             $table->string('ingredient_type');
             $table->unsignedFloat('amount');
-            $table->enum('unit', ['tsp', 'tbsp', 'cup', 'oz', 'gram', 'serving'])->nullable();
+            $table->enum('unit', Nutrients::units()->pluck('value')->toArray())->nullable();
             $table->string('detail')->nullable();
             $table->unsignedInteger('weight');
             $table->unsignedInteger('parent_id')->index();