Issue #1091554 by acrollet, tim.plunkett, dawehner | Take sure the pager api functions work all the time as expected if the pager is not initialized yet.

includes/view.inc

@@ -301,24 +301,40 @@ class view extends views_db_object {
    */
   function set_current_page($page) {
     $this->current_page = $page;
+
+    // If the pager is already initialized, pass it through to the pager.
+    if (!empty($this->query->pager)) {
+      return $this->query->pager->set_current_page($page);
+    }
+
   }
 
   /**
    * Get the current page from the pager.
    */
   function get_current_page() {
+    // If the pager is already initialized, pass it through to the pager.
     if (!empty($this->query->pager)) {
       return $this->query->pager->get_current_page();
     }
+
+    if (isset($this->current_page)) {
+      return $this->current_page;
+    }
   }
 
   /**
    * Get the items per page from the pager.
    */
   function get_items_per_page() {
+    // If the pager is already initialized, pass it through to the pager.
     if (!empty($this->query->pager)) {
       return $this->query->pager->get_items_per_page();
     }
+
+    if (isset($this->items_per_page)) {
+      return $this->items_per_page;
+    }
   }
 
   /**
@@ -337,9 +353,14 @@ class view extends views_db_object {
    * Get the pager offset from the pager.
    */
   function get_offset() {
+    // If the pager is already initialized, pass it through to the pager.
     if (!empty($this->query->pager)) {
       return $this->query->pager->get_offset();
     }
+
+    if (isset($this->offset)) {
+      return $this->offset;
+    }
   }
 
   /**
@@ -660,7 +681,7 @@ class view extends views_db_object {
     if (empty($this->query->pager)) {
       $this->query->pager = $this->display_handler->get_plugin('pager');
 
-      if ($this->query->pager->use_pager()) {
+      if ($this->query->pager->use_pager() && isset($this->current_page)) {
         $this->query->pager->set_current_page($this->current_page);
       }
 
@@ -1963,7 +1984,7 @@ class view extends views_db_object {
       unset($this->query);
     }
 
-    $keys = array('current_display', 'display_handler', 'build_info', 'built', 'executed', 'attachment_before', 'attachment_after', 'field', 'argument', 'filter', 'sort', 'relationship', 'header', 'footer', 'empty', 'query', 'result', 'inited', 'style_plugin', 'plugin_name', 'exposed_data', 'exposed_input', 'many_to_one_tables');
+    $keys = array('current_display', 'display_handler', 'build_info', 'built', 'executed', 'attachment_before', 'attachment_after', 'field', 'argument', 'filter', 'sort', 'relationship', 'header', 'footer', 'empty', 'query', 'result', 'inited', 'style_plugin', 'plugin_name', 'exposed_data', 'exposed_input', 'many_to_one_tables', 'items_per_page', 'offset', 'current_page');
     foreach ($keys as $key) {
       if (isset($this->$key)) {
         unset($this->$key);

tests/views_pager.test

@@ -8,7 +8,7 @@
 /**
  * Tests the pluggable pager system.
  */
-class ViewsPagerTest extends ViewsTestCase {
+class ViewsPagerTest extends ViewsSqlTest {
   public static function getInfo() {
     return array(
       'name' => 'Pager',
@@ -422,4 +422,56 @@ class ViewsPagerTest extends ViewsTestCase {
     $output = $view->render();
     $this->assertEqual(preg_match('/<ul class="pager">/', $output), 0, t('The pager is not rendered.'));
   }
+
+  /**
+   * Test the api functions on the view object.
+   */
+  function testPagerApi() {
+    $view = $this->viewsPagerFull();
+    // On the first round don't initialize the pager.
+
+    $this->assertEqual($view->get_items_per_page(), NULL, 'If the pager is not initialized and no manual override there is no items per page.');
+    $rand_number = rand(1, 5);
+    $view->set_items_per_page($rand_number);
+    $this->assertEqual($view->get_items_per_page(), $rand_number, 'Make sure get_items_per_page uses the settings of set_items_per_page.');
+
+    $this->assertEqual($view->get_offset(), NULL, 'If the pager is not initialized and no manual override there is no offset.');
+    $rand_number = rand(1, 5);
+    $view->set_offset($rand_number);
+    $this->assertEqual($view->get_offset(), $rand_number, 'Make sure get_offset uses the settings of set_offset.');
+
+    $this->assertEqual($view->get_current_page(), NULL, 'If the pager is not initialized and no manual override there is no current page.');
+    $rand_number = rand(1, 5);
+    $view->set_current_page($rand_number);
+    $this->assertEqual($view->get_current_page(), $rand_number, 'Make sure get_current_page uses the settings of set_current_page.');
+
+    $view->destroy();
+
+    // On this round enable the pager.
+    $view->init_display();
+    $view->init_query();
+    $view->init_pager();
+
+    $this->assertEqual($view->get_items_per_page(), 5, 'Per default the view has 5 items per page.');
+    $rand_number = rand(1, 5);
+    $view->set_items_per_page($rand_number);
+    $rand_number = rand(6, 11);
+    $view->query->pager->set_items_per_page($rand_number);
+    $this->assertEqual($view->get_items_per_page(), $rand_number, 'Make sure get_items_per_page uses the settings of set_items_per_page.');
+
+    $this->assertEqual($view->get_offset(), 0, 'Per default a view has a 0 offset.');
+    $rand_number = rand(1, 5);
+    $view->set_offset($rand_number);
+    $rand_number = rand(6, 11);
+    $view->query->pager->set_offset($rand_number);
+    $this->assertEqual($view->get_offset(), $rand_number, 'Make sure get_offset uses the settings of set_offset.');
+
+    $this->assertEqual($view->get_current_page(), 0, 'Per default the current page is 0.');
+    $rand_number = rand(1, 5);
+    $view->set_current_page($rand_number);
+    $rand_number = rand(6, 11);
+    $view->query->pager->set_current_page($rand_number);
+    $this->assertEqual($view->get_current_page(), $rand_number, 'Make sure get_current_page uses the settings of set_current_page.');
+
+  }
 }