From 9e81b1af37230c3cf7b267e95054d2ec13c3ade4 Mon Sep 17 00:00:00 2001
From: NuwanJ <nuwanjaliyagoda@gmail.com>
Date: Wed, 16 Oct 2024 16:30:29 +0530
Subject: [PATCH] Taxonomy - delete restrictions

---
 app/Domains/Taxonomy/Models/Taxonomy.php      |  2 +-
 app/Domains/Taxonomy/Models/TaxonomyTerm.php  | 11 +++++-
 .../Backend/TaxonomyController.php            | 38 +++++++++----------
 .../views/backend/taxonomy/delete.blade.php   | 36 +++++++++++++-----
 .../backend/taxonomy/terms/delete.blade.php   | 15 +++++++-
 5 files changed, 70 insertions(+), 32 deletions(-)

diff --git a/app/Domains/Taxonomy/Models/Taxonomy.php b/app/Domains/Taxonomy/Models/Taxonomy.php
index 2f2c82f..5a6817c 100644
--- a/app/Domains/Taxonomy/Models/Taxonomy.php
+++ b/app/Domains/Taxonomy/Models/Taxonomy.php
@@ -34,7 +34,7 @@ class Taxonomy extends Model
     ];
 
     public static $propertyType = [
-        'string'=>'String',
+        'string' => 'String',
         'integer' => 'Integer Number',
         'float' => 'Floating Point Number',
         'date' => 'Date',
diff --git a/app/Domains/Taxonomy/Models/TaxonomyTerm.php b/app/Domains/Taxonomy/Models/TaxonomyTerm.php
index e72a228..beb28fd 100644
--- a/app/Domains/Taxonomy/Models/TaxonomyTerm.php
+++ b/app/Domains/Taxonomy/Models/TaxonomyTerm.php
@@ -55,7 +55,7 @@ public function children()
     public function getMetadata($code)
     {
         $metadata = json_decode($this->metadata, true);
-        
+
         if (is_array($metadata)) {
             foreach ($metadata as $item) {
                 if ($item['code'] === $code) {
@@ -66,6 +66,15 @@ public function getMetadata($code)
         return null;
     }
 
+    protected static function boot()
+    {
+        parent::boot();
+
+        static::deleting(function ($taxonomyTerm) {
+            $taxonomyTerm->children()->delete();
+        });
+    }
+
     /**
      * Create a new factory instance for the model.
      *
diff --git a/app/Http/Controllers/Backend/TaxonomyController.php b/app/Http/Controllers/Backend/TaxonomyController.php
index fbb47ef..7dd8573 100644
--- a/app/Http/Controllers/Backend/TaxonomyController.php
+++ b/app/Http/Controllers/Backend/TaxonomyController.php
@@ -7,6 +7,7 @@
 use Illuminate\Support\Facades\Auth;
 use App\Http\Controllers\Controller;
 use App\Domains\Taxonomy\Models\Taxonomy;
+use App\Domains\Taxonomy\Models\TaxonomyTerm;
 
 class TaxonomyController extends Controller
 {
@@ -17,12 +18,12 @@ class TaxonomyController extends Controller
      */
     public function create()
     {
-        try{
+        try {
             return view('backend.taxonomy.create');
-        }catch (\Exception $ex) {
-            Log::error('Failed to load taxonomy creation page', ['error' => $ex->getMessage()]);    
+        } catch (\Exception $ex) {
+            Log::error('Failed to load taxonomy creation page', ['error' => $ex->getMessage()]);
             return abort(500);
-        }    
+        }
     }
     /**
      * Store a newly created resource in storage.
@@ -32,19 +33,19 @@ public function create()
      */
     public function store(Request $request)
     {
-        $validatedData =$request->validate([
+        $validatedData = $request->validate([
             'code' => 'required|unique:taxonomies',
             'name' => 'required',
             'description' => 'nullable',
         ]);
-    
-        try{
+
+        try {
             $taxonomy = new Taxonomy($validatedData);
             $taxonomy->properties = $request->properties;
             $taxonomy->created_by = Auth::user()->id;
             $taxonomy->save();
             return redirect()->route('dashboard.taxonomy.index')->with('Success', 'Taxonomy created successfully');
-        }catch (\Exception $ex) {
+        } catch (\Exception $ex) {
             Log::error('Failed to create taxonomy', ['error' => $ex->getMessage()]);
             return abort(500);
         }
@@ -66,7 +67,7 @@ public function edit(Taxonomy $taxonomy)
             return abort(500);
         }
     }
-    
+
 
     /**
      * Update the specified resource in storage.
@@ -80,22 +81,21 @@ public function update(Request $request, Taxonomy $taxonomy)
         $data = $request->validate([
             'code' => 'required',
             'name' => 'required',
-            'description' => 'nullable',     
+            'description' => 'nullable',
         ]);
-    
-        try{
+
+        try {
             $taxonomy->update($data);
             $taxonomy->properties = $request->properties;
-            $taxonomy->updated_by = Auth::user()->id;        
+            $taxonomy->updated_by = Auth::user()->id;
             $taxonomy->save();
             return redirect()->route('dashboard.taxonomy.index')->with('Success', 'Taxonomy updated successfully');
-        }catch (\Exception $ex) {
+        } catch (\Exception $ex) {
             Log::error('Failed to update taxonomy', ['error' => $ex->getMessage()]);
             return abort(500);
         }
-
     }
-     /**
+    /**
      * Confirm to delete the specified resource from storage.
      *
      * @param \App\Domains\Taxonomy\Models\Taxonomy $taxonomy
@@ -103,7 +103,8 @@ public function update(Request $request, Taxonomy $taxonomy)
      */
     public function delete(Taxonomy $taxonomy)
     {
-        return view('backend.taxonomy.delete', compact('taxonomy'));
+        $terms = TaxonomyTerm::where('taxonomy_id', $taxonomy->id)->get();
+        return view('backend.taxonomy.delete', compact('taxonomy', 'terms'));
     }
 
 
@@ -123,5 +124,4 @@ public function destroy(Taxonomy $taxonomy)
             return abort(500);
         }
     }
-}
-
+}
\ No newline at end of file
diff --git a/resources/views/backend/taxonomy/delete.blade.php b/resources/views/backend/taxonomy/delete.blade.php
index 187e85b..095f9de 100644
--- a/resources/views/backend/taxonomy/delete.blade.php
+++ b/resources/views/backend/taxonomy/delete.blade.php
@@ -13,18 +13,34 @@
                 <p>Are you sure you want to delete
                     <strong><i>"{{ $taxonomy->name }}"</i></strong> ?
                 </p>
-                <div class="d-flex">
-                    {!! Form::open([
-                        'url' => route('dashboard.taxonomy.destroy', compact('taxonomy')),
-                        'method' => 'delete',
-                        'class' => 'container',
-                    ]) !!}
 
-                    <a href="{{ route('dashboard.taxonomy.index') }}" class="btn btn-light mr-2">Back</a>
-                    {!! Form::submit('Delete', ['class' => 'btn btn-danger']) !!}
+                @if ($terms->count() > 0)
+                    <p>The following terms are linked to this Taxonomy. Deletion is not permitted until these terms are
+                        reassigned or deleted.</p>
+                    <ul>
+                        @foreach ($terms as $term)
+                            <li>
+                                <a href="{{ route('dashboard.taxonomy.terms.edit', compact('taxonomy', 'term')) }}">
+                                    {{ $term->name }} ({{ $term->code }})
+                                </a>
+                            </li>
+                        @endforeach
+                    </ul>
+                    <a href="{{ route('dashboard.semesters.index') }}" class="btn btn-light mr-2">Back</a>
+                @else
+                    <div class="d-flex">
+                        {!! Form::open([
+                            'url' => route('dashboard.taxonomy.destroy', compact('taxonomy')),
+                            'method' => 'delete',
+                            'class' => 'container',
+                        ]) !!}
+
+                        <a href="{{ route('dashboard.taxonomy.index') }}" class="btn btn-light mr-2">Back</a>
+                        {!! Form::submit('Delete', ['class' => 'btn btn-danger']) !!}
+                        {!! Form::close() !!}
+                    </div>
+                @endif
 
-                    {!! Form::close() !!}
-                </div>
             </x-slot>
         </x-backend.card>
     </div>
diff --git a/resources/views/backend/taxonomy/terms/delete.blade.php b/resources/views/backend/taxonomy/terms/delete.blade.php
index f3aad39..ff1c125 100644
--- a/resources/views/backend/taxonomy/terms/delete.blade.php
+++ b/resources/views/backend/taxonomy/terms/delete.blade.php
@@ -13,6 +13,20 @@
                 <p>Are you sure you want to delete
                     <strong><i>"{{ $term->name }}"</i></strong> ?
                 </p>
+
+                @if ($term->children()->count() > 0)
+                    <p>The following terms are linked to this Taxonomy Term, and will be deleted with this. </p>
+                    <ul>
+                        @foreach ($term->children()->get() as $childTerm)
+                            <li>
+                                <a href="{{ route('dashboard.taxonomy.terms.edit', ['taxonomy', 'childTerm']) }}">
+                                    {{ $childTerm->name }} ({{ $childTerm->code }})
+                                </a>
+                            </li>
+                        @endforeach
+                    </ul>
+                @endif
+
                 <div class="d-flex">
                     {!! Form::open([
                         'url' => route('dashboard.taxonomy.terms.destroy', ['taxonomy' => $taxonomy, 'term' => $term]),
@@ -29,4 +43,3 @@
         </x-backend.card>
     </div>
 @endsection
-