first commit

app/Models/MedicationExpenseRow.php

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+<?php
+
+namespace App\Models;
+
+use Database\Factories\MedicationExpenseRowFactory;
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+#[Fillable(['report_period_id', 'department_id'])]
+class MedicationExpenseRow extends Model
+{
+    /** @use HasFactory<MedicationExpenseRowFactory> */
+    use HasFactory;
+
+    /**
+     * Get the period that owns the row.
+     *
+     * @return BelongsTo<ReportPeriod, $this>
+     */
+    public function reportPeriod(): BelongsTo
+    {
+        return $this->belongsTo(ReportPeriod::class);
+    }
+
+    /**
+     * Get the department that owns the row.
+     *
+     * @return BelongsTo<Department, $this>
+     */
+    public function department(): BelongsTo
+    {
+        return $this->belongsTo(Department::class);
+    }
+
+    /**
+     * Get the values for the row.
+     *
+     * @return HasMany<MedicationExpenseValue, $this>
+     */
+    public function values(): HasMany
+    {
+        return $this->hasMany(MedicationExpenseValue::class);
+    }
+}