Fix: added validation for custom and additional attribute (#4260)

app/models/jsonb_attributes_length_validator.rb

@@ -0,0 +1,21 @@
+class JsonbAttributesLengthValidator < ActiveModel::EachValidator
+  def validate_each(record, attribute, value)
+    return if value.empty?
+
+    @attribute = attribute
+    @record = record
+
+    value.each do |key, attribute_value|
+      validate_keys(key, attribute_value)
+    end
+  end
+
+  def validate_keys(key, attribute_value)
+    case attribute_value.class.name
+    when 'String'
+      @record.errors.add @attribute, "#{key} length should be < 1500" if attribute_value.length > 1500
+    when 'Integer'
+      @record.errors.add @attribute, "#{key} value should be < 9999999999" if attribute_value > 9_999_999_999
+    end
+  end
+end