Add instance method lock_model_at_build?

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## 1.5.5 (2024-03-14)
+
+* Add instance method `lock_model_at_build?` to
+  `RailsOps::Operation::Model::Load` in order to allow dynamic decision whether
+  locking should occur.
+
 ## 1.5.4 (2024-01-10)
 
 * Update documentation

README.md

@@ -1196,6 +1196,22 @@ One caveat is, that shared locking is only supported for MySQl (MariaDB),
 Postgresql and Oracle DB databases, any other database will always use an
 exlusive lock.
 
+You can also dynamically enable or disable locking by creating an instance
+method `lock_model_at_build?`:
+
+```ruby
+class Operations::User::Update < RailsOps::Operation::Model::Load
+  model ::User
+
+  protected
+
+  def lock_model_at_build?
+    # Example: Lock based on a parameter
+    osparams.lock
+  end
+end
+```
+
 ### Creating models
 
 For creating models, you can use the base class

lib/rails_ops/operation/model/load.rb

@@ -40,6 +40,10 @@ def self.lock_model_at_build?
     _lock_model_at_build.nil? ? RailsOps.config.lock_models_at_build? : _lock_model_at_build
   end
 
+  def lock_model_at_build?
+    self.class._lock_model_at_build?
+  end
+
   # Method to set the lock mode, which can either be :exclusive to use
   # an exclusive write lock, or :shared to use a shared lock. Please note
   # that currently, :shared only works for MySql, Postgresql and Oracle DB,
@@ -93,7 +97,7 @@ def extract_id_from_params
 
   def lock_relation(relation)
     # Directly return the relation if we don't want to lock the relation
-    return relation unless self.class.lock_model_at_build?
+    return relation unless lock_model_at_build?
 
     if self.class.lock_mode_or_default == :shared
       # Lock the relation in shared mode