Add module::clear_var()

2 files changed, 23 insertions, 0 deletions

diff --git a/core/helpers/module.php b/core/helpers/module.php
index 415ecf4b..321a33fa 100644
--- a/core/helpers/module.php
+++ b/core/helpers/module.php
@@ -243,4 +243,19 @@ class module_Core {
     $var->value = $value;
     $var->save();
   }
+
+  /**
+   * Remove a variable for this module.
+   * @param string $module_name
+   * @param string $name
+   */
+  public function clear_var($module_name, $name) {
+    $var = ORM::factory("var")
+      ->where("module_name", $module_name)
+      ->where("name", $name)
+      ->find();
+    if ($var->loaded) {
+      $var->delete();
+    }
+  }
 }
diff --git a/core/tests/Var_Test.php b/core/tests/Var_Test.php
index e186a7c2..de07ba52 100644
--- a/core/tests/Var_Test.php
+++ b/core/tests/Var_Test.php
@@ -25,4 +25,12 @@ class Var_Test extends Unit_Test_Case {
     module::set_var("core", "Parameter", "updated value");
     $this->assert_equal("updated value", module::get_var("core", "Parameter"));
   }
+
+  public function clear_parameter_test() {
+    module::set_var("core", "Parameter", "original value");
+    $this->assert_equal("original value", module::get_var("core", "Parameter"));
+
+    module::clear_var("core", "Parameter");
+    $this->assert_equal(null, module::get_var("core", "Parameter"));
+  }
 }
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