link multiple maxCount

application/Espo/Classes/FieldValidators/LinkMultipleType.php

@@ -36,20 +36,17 @@ use Espo\Core\ORM\Entity as CoreEntity;
 
 use stdClass;
 
+/**
+ * @noinspection PhpUnused
+ */
 class LinkMultipleType
 {
-    private Metadata $metadata;
-    private Defs $defs;
-
     private const COLUMN_TYPE_ENUM = 'enum';
     private const COLUMN_TYPE_VARCHAR = 'varchar';
     private const COLUMN_TYPE_BOOL = 'bool';
 
-    public function __construct(Metadata $metadata, Defs $defs)
-    {
-        $this->metadata = $metadata;
-        $this->defs = $defs;
-    }
+    public function __construct(private Metadata $metadata, private Defs $defs)
+    {}
 
     public function checkRequired(Entity $entity, string $field): bool
     {
@@ -63,6 +60,7 @@ class LinkMultipleType
         return count($idList) > 0;
     }
 
+    /** @noinspection PhpUnused */
     public function checkPattern(Entity $entity, string $field): bool
     {
         /** @var ?mixed[] $idList */
@@ -93,6 +91,27 @@ class LinkMultipleType
         return true;
     }
 
+    /** @noinspection PhpUnused */
+    public function checkMaxCount(Entity $entity, string $field, ?int $maxCount): bool
+    {
+        if ($maxCount === null) {
+            return true;
+        }
+
+        $list = $entity->get($field . 'Ids');
+
+        if (!is_array($list)) {
+            return true;
+        }
+
+        if (count($list) > $maxCount) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /** @noinspection PhpUnused */
     public function checkColumnsValid(Entity $entity, string $field): bool
     {
         if (!$entity instanceof CoreEntity) {

application/Espo/Resources/metadata/fields/attachmentMultiple.json

@@ -54,6 +54,12 @@
                 ".txt"
             ],
             "tooltip": "fileAccept"
+        },
+        {
+            "name": "maxCount",
+            "type": "int",
+            "min": 1,
+            "tooltip": true
         }
     ],
     "actualFields": [
@@ -77,7 +83,8 @@
     "personalData": true,
     "validationList": [
         "required",
-        "pattern"
+        "pattern",
+        "maxCount"
     ],
     "mandatoryValidationList": [
         "pattern"

application/Espo/Resources/metadata/fields/linkMultiple.json

@@ -5,12 +5,6 @@
             "type": "bool",
             "default": false
         },
-        {
-            "name": "sortable",
-            "type": "bool",
-            "default": false,
-            "hidden": true
-        },
         {
             "name": "readOnly",
             "type": "bool",
@@ -20,6 +14,11 @@
             "name": "readOnlyAfterCreate",
             "type": "bool"
         },
+        {
+            "name": "audited",
+            "type": "bool",
+            "tooltip": true
+        },
         {
             "name": "default",
             "type": "linkMultiple",
@@ -34,9 +33,16 @@
             "type": "bool"
         },
         {
-            "name": "audited",
-            "type": "bool",
+            "name": "maxCount",
+            "type": "int",
+            "min": 1,
             "tooltip": true
+        },
+        {
+            "name": "sortable",
+            "type": "bool",
+            "default": false,
+            "hidden": true
         }
     ],
     "actualFields": [
@@ -49,7 +55,8 @@
     "validationList": [
         "required",
         "pattern",
-        "columnsValid"
+        "columnsValid",
+        "maxCount"
     ],
     "mandatoryValidationList": [
         "pattern",

client/src/views/fields/attachment-multiple.js

@@ -55,6 +55,7 @@ class AttachmentMultipleFieldView extends BaseFieldView {
      * @property {string[]} [sourceList] A source list.
      * @property {string[]} [accept] Formats to accept.
      * @property {number} [maxFileSize] A max file size (in Mb).
+     * @property {number} [maxCount] A max number of items.
      */
 
     /**
@@ -81,7 +82,11 @@ class AttachmentMultipleFieldView extends BaseFieldView {
     foreignScope
     showPreviews = true
     accept = null
-    validations = ['ready', 'required']
+    validations = [
+        'ready',
+        'required',
+        'maxCount',
+    ]
     searchTypeList = ['isNotEmpty', 'isEmpty']
 
     events = {
@@ -932,6 +937,33 @@ class AttachmentMultipleFieldView extends BaseFieldView {
         }
     }
 
+    // noinspection JSUnusedGlobalSymbols
+    validateMaxCount() {
+        const maxCount = this.params.maxCount;
+
+        if (!maxCount) {
+            return false;
+        }
+
+        const idList = this.model.get(this.idsName) || [];
+
+        if (idList.length === 0) {
+            return false;
+        }
+
+        if (idList.length <= maxCount) {
+            return false;
+        }
+
+        const msg = this.translate('fieldExceedsMaxCount', 'messages')
+            .replace('{field}', this.getLabelText())
+            .replace('{maxCount}', maxCount.toString());
+
+        this.showValidationMessage(msg, 'label');
+
+        return true;
+    }
+
     fetch() {
         const data = {};
 

client/src/views/fields/link-multiple.js

@@ -54,6 +54,7 @@ class LinkMultipleFieldView extends BaseFieldView {
      * @property {boolean} [autocompleteOnEmpty] Autocomplete on empty input.
      * @property {boolean} [sortable] Sortable.
      * @property {boolean} [createButton] Show 'Create' button.
+     * @property {number} [maxCount] A max number of items.
      */
 
     /**
@@ -73,6 +74,11 @@ class LinkMultipleFieldView extends BaseFieldView {
     editTemplate = 'fields/link-multiple/edit'
     searchTemplate = 'fields/link-multiple/search'
 
+    validations = [
+        'required',
+        'maxCount',
+    ]
+
     /**
      * A name-hash attribute name.
      *
@@ -831,6 +837,33 @@ class LinkMultipleFieldView extends BaseFieldView {
         return false;
     }
 
+    // noinspection JSUnusedGlobalSymbols
+    validateMaxCount() {
+        const maxCount = this.params.maxCount;
+
+        if (!maxCount) {
+            return false;
+        }
+
+        const idList = this.model.get(this.idsName) || [];
+
+        if (idList.length === 0) {
+            return false;
+        }
+
+        if (idList.length <= maxCount) {
+            return false;
+        }
+
+        const msg = this.translate('fieldExceedsMaxCount', 'messages')
+            .replace('{field}', this.getLabelText())
+            .replace('{maxCount}', maxCount.toString());
+
+        this.showValidationMessage(msg);
+
+        return true;
+    }
+
     /** @inheritDoc */
     fetch() {
         const data = {};