feat: limit unique constraint option to applicable field types

Author: ManukMinasyan

src/Data/FieldTypeData.php

@@ -28,6 +28,7 @@ public function __construct(
         public bool $withoutUserOptions = false,
         public bool $acceptsArbitraryValues = false,
         public bool $supportsMultiValue = false,
+        public bool $supportsUniqueConstraint = false,
         public array $validationRules = [],
         public ?string $settingsDataClass = null,
         public string|Closure|null $settingsSchema = null,

src/FieldTypeSystem/Definitions/EmailFieldType.php

@@ -30,6 +30,7 @@ public function configure(): FieldSchema
             ->searchable()
             ->sortable()
             ->supportsMultiValue()
+            ->supportsUniqueConstraint()
             ->withArbitraryValues()
             ->withoutUserOptions()
             ->availableValidationRules([

src/FieldTypeSystem/Definitions/LinkFieldType.php

@@ -26,6 +26,7 @@ public function configure(): FieldSchema
             ->formComponent(LinkComponent::class)
             ->tableColumn(TextColumn::class)
             ->infolistEntry(TextEntry::class)
+            ->supportsUniqueConstraint()
             ->priority(60)
             ->availableValidationRules([
                 ValidationRule::REQUIRED,

src/FieldTypeSystem/Definitions/NumberFieldType.php

@@ -26,6 +26,7 @@ public function configure(): FieldSchema
             ->formComponent(NumberComponent::class)
             ->tableColumn(TextColumn::class)
             ->infolistEntry(TextEntry::class)
+            ->supportsUniqueConstraint()
             ->priority(20)
             ->availableValidationRules([
                 ValidationRule::REQUIRED,

src/FieldTypeSystem/Definitions/TextFieldType.php

@@ -27,6 +27,7 @@ public function configure(): FieldSchema
             ->tableColumn(TextColumn::class)
             ->infolistEntry(TextEntry::class)
             ->encryptable()
+            ->supportsUniqueConstraint()
             ->priority(10)
             ->availableValidationRules([
                 ValidationRule::REQUIRED,

src/FieldTypeSystem/Definitions/TextareaFieldType.php

@@ -26,6 +26,7 @@ public function configure(): FieldSchema
             ->formComponent(TextareaFormComponent::class)
             ->tableColumn(TextColumn::class)
             ->infolistEntry(TextEntry::class)
+            ->supportsUniqueConstraint()
             ->priority(15)
             ->availableValidationRules([
                 ValidationRule::REQUIRED,

src/FieldTypeSystem/FieldSchema.php

@@ -55,6 +55,8 @@ class FieldSchema
 
     private bool $supportsMultiValue = false;
 
+    private bool $supportsUniqueConstraint = false;
+
     protected bool $withoutUserOptions = false;
 
     private ?string $settingsDataClass = null;
@@ -323,6 +325,16 @@ public function supportsMultiValue(bool $supports = true): self
         return $this;
     }
 
+    /**
+     * Configure whether field supports unique value constraint per entity type
+     */
+    public function supportsUniqueConstraint(bool $supports = true): self
+    {
+        $this->supportsUniqueConstraint = $supports;
+
+        return $this;
+    }
+
     // ========== Data Type Specific Methods (from DataTypeConfigurators) ==========
 
     /**
@@ -555,6 +567,7 @@ public function data(): FieldTypeData
             withoutUserOptions: $this->withoutUserOptions,
             acceptsArbitraryValues: $this->acceptsArbitraryValues,
             supportsMultiValue: $this->supportsMultiValue,
+            supportsUniqueConstraint: $this->supportsUniqueConstraint,
             validationRules: $this->availableValidationRules,
             settingsDataClass: $this->settingsDataClass,
             settingsSchema: $this->settingsSchema

src/Filament/Management/Schemas/FieldForm.php

@@ -405,7 +405,8 @@ public static function schema(bool $withOptionsRelationship = true): array
                                         )
                                     )
                                     ->visible(
-                                        fn (): bool => FeatureManager::isEnabled(CustomFieldsFeature::FIELD_UNIQUE_VALUE)
+                                        fn (Get $get): bool => FeatureManager::isEnabled(CustomFieldsFeature::FIELD_UNIQUE_VALUE) &&
+                                            CustomFieldsType::getFieldType($get('type'))?->supportsUniqueConstraint === true
                                     )
                                     ->default(false),
                             ]),