FEATURE: add functionality for editing custom fields

app/Http/Controllers/Admin/EditCustomField.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Enumerations\CustomFieldResources;
+use App\Enumerations\CustomFieldTypes;
+use App\Http\Controllers\Controller;
+use App\Http\Requests;
+use App\Http\Requests\EditCustomFieldRequest;
+use App\Models\CustomField;
+
+class EditCustomField extends Controller
+{
+    public function getEditCustomField($id)
+    {
+        $field = CustomField::findOrFail($id);
+
+        return view('admin.customFields.edit', [
+            'field'     => $field,
+            'types'     => CustomFieldTypes::getWithTranslations(),
+            'resources' => CustomFieldResources::getWithTranslations()
+        ]);
+    }
+
+    public function postEditCustomField(EditCustomFieldRequest $request, $id)
+    {
+        $customField = CustomField::findOrFail($id);
+
+        // setup fields
+
+        $customField->name = $request->name;
+        $customField->required = $request->has('required');
+
+        // set non-mandatory fields
+
+        if ($request->description) {
+            $customField->description = $request->description;
+        }
+
+        if ($request->possibleValues) {
+            $customField->possible_values = trim(preg_replace('~[\r\n]+~', '|', $request->possibleValues));
+        }
+
+        if ($request->defaultValue) {
+            $customField->default_value = $request->defaultValue;
+        }
+
+        if ($request->regExp) {
+            $customField->regexp = $request->regExp;
+        }
+
+        if ($request->minLength) {
+            $customField->min_length = $request->minLength;
+        }
+
+        if ($request->maxLength) {
+            $customField->max_length = $request->maxLength;
+        }
+
+        // save changes into database
+        $customField->save();
+
+        return redirect()
+            ->route('customfields.edit', ['id' => $id])
+            ->with('success', trans('admin/customFields.successfullyEdited'));
+    }
+}

app/Http/Requests/EditCustomFieldRequest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Requests;
+
+class EditCustomFieldRequest extends Request
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'name'      => 'required',
+            'minLength' => 'numeric|min:0',
+            'maxLength' => 'numeric|min:0',
+        ];
+    }
+}

app/Http/routes.php

@@ -59,10 +59,18 @@ Route::group([
     Route::get('customfields/new', 'CreateNewCustomField@getNew')
          ->name('customfields.new');
 
+    // form for editing custom field
+    Route::get('customfields/edit/{id}', 'EditCustomField@getEditCustomField')
+         ->name('customfields.edit');
+
     // form for adding new custom field
     Route::post('customfields/new', 'CreateNewCustomField@postNew')
          ->name('customfields.newPost');
 
+    // form for editing custom field
+    Route::post('customfields/edit/{id}', 'EditCustomField@postEditCustomField')
+         ->name('customfields.editPost');
+
     // logout method
     Route::get('logout', function () {