Implement Object#try and use to get field value.

build.gradle

@@ -7,7 +7,7 @@ plugins {
 }
 
 group 'no.datek'
-version '0.12.2'
+version '0.12.3'
 final String JRUBY_VERSION = '9.4.5.0';
 
 repositories {

src/main/resources/ruby/core_ext.rb

@@ -1,10 +1,16 @@
 class Object
   def present? = !blank?
   def blank? = false
+
+  def try(method, *args)
+    return nil unless self.respond_to?(method)
+    return send(method, *args)
+  end
 end
 
 class NilClass
   def blank? = true
+  def try(*) = nil
 end
 
 class String

src/main/resources/ruby/form_helper.rb

@@ -141,15 +141,15 @@ def text_input(object, field_name, **opts)
     classes = +"form-control"
 
     classes << ' ' << custom_classes if custom_classes
-    classes << ' is-invalid' if object&.hasFieldErrors(field_name.to_s)
+    classes << ' is-invalid' if object.try(:hasFieldErrors, field_name.to_s)
     classes
   end
 
   private def select_classes(object, field_name, custom_classes)
     classes = +"form-select"
 
     classes << ' ' << custom_classes if custom_classes
-    classes << ' is-invalid' if object&.hasFieldErrors(field_name.to_s)
+    classes << ' is-invalid' if object.try(:hasFieldErrors, field_name.to_s)
     classes
   end
 
@@ -233,7 +233,7 @@ def textarea(object, field_name, **opts)
       html << %{ #{key}="#{value}"}
     end
     html << ">"
-    html << object[field_name]
+    html << (object.try(field_name) || object.try(:[], field_name)).to_s
     html << "</textarea>"
     html << "<label for='#{id_name}' style='width:auto'>#{appendix}</label></span>" if appendix
     html << "<br/>" unless no_break