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   1  <?php
   2  
   3      lt_include( PLOG_CLASS_PATH."class/action/admin/adminaction.class.php" );
   4      lt_include( PLOG_CLASS_PATH."class/dao/blogcategories.class.php" );
   5      lt_include( PLOG_CLASS_PATH."class/data/validator/integervalidator.class.php" );
   6      lt_include( PLOG_CLASS_PATH."class/data/validator/arrayvalidator.class.php" );
   7      lt_include( PLOG_CLASS_PATH."class/data/validator/emptyvalidator.class.php" );
   8      lt_include( PLOG_CLASS_PATH."class/view/admin/adminblogcategorieslistview.class.php" );
   9  
  10      /**
  11       * \ingroup Action
  12       * @private
  13       *
  14       * Deletes a blog category from the database
  15       */
  16      class AdminDeleteBlogCategoryAction extends AdminAction 
  17      {
  18  
  19          var $_categoryId;
  20          var $_categoryIds;
  21  
  22          /**
  23           * Constructor. If nothing else, it also has to call the constructor of the parent
  24           * class, BlogAction with the same parameters
  25           */
  26          function AdminDeleteBlogCategoryAction( $actionInfo, $request )
  27          {
  28              $this->AdminAction( $actionInfo, $request );
  29              
  30              $this->_mode = $actionInfo->getActionParamValue();
  31              // get the array that contains the categories we'd like to delete
  32              if( $this->_mode == "deleteBlogCategory" ) 
  33                  $this->registerFieldValidator( "categoryId", new IntegerValidator());
  34              else 
  35                  $this->registerFieldValidator( "categoryIds", new ArrayValidator());
  36                  
  37              $view = new AdminBlogCategoriesListView( $this->_blogInfo );
  38              $view->setErrorMessage( $this->_locale->tr("error_incorrect_blog_category"));
  39              $this->setValidationErrorView( $view );    
  40              
  41              $this->requireAdminPermission( "update_blog_category" );    
  42          }
  43  
  44          /**
  45           * @private
  46           * removes categories from the database
  47           */
  48  		function _deleteBlogCategories()
  49          {
  50              $categories = new BlogCategories();
  51              
  52              $errorMessage = "";
  53              $successMessage = "";
  54              $totalOk = 0;
  55              
  56              foreach( $this->_categoryIds as $categoryId ) {
  57                  // if there's only one blog category left, we can't do this
  58                  if( $categories->getNumBlogCategories() == 1 ) {
  59                      $errorMessage .= $this->_locale->tr( "error_cannot_delete_last_blog_category" );
  60                      break;
  61                  }
  62      
  63                  // get the category
  64                  $category   = $categories->getBlogCategory( $categoryId );
  65                  if( $category ) {
  66                      // get how many blogs it has
  67                      $numBlogs = $category->getNumBlogs( BLOG_STATUS_ALL );
  68                      
  69                      // fire the pre-event
  70                      $this->notifyEvent( EVENT_PRE_DELETE_BLOG_CATEGORY, Array( "category" => &$category ));
  71  
  72                      // if it has at least one we can't delete it because then it would break the
  73                      // integrity of our data in the database...
  74                      if( $numBlogs > 0 ) {
  75                          $errorMessage .= $this->_locale->pr( "error_blog_category_has_blogs", $category->getName())."<br/>";
  76                      }
  77                      else {
  78                          // if everything correct, we can proceed and delete it
  79                          if( !$categories->deleteBlogCategory( $categoryId, $this->_blogInfo->getId()))
  80                              $errorMessage .= $this->_locale->pr("error_deleting_blog_category")."<br/>";
  81                          else {
  82                              if( $totalOk < 2 )
  83                                  $successMessage .= $this->_locale->pr("blog_category_deleted_ok", $category->getName())."<br/>";
  84                              else
  85                                  $successMessage = $this->_locale->pr( "blog_categories_deleted_ok", $totalOk );
  86                                  
  87                              // fire the pre-event
  88                              $this->notifyEvent( EVENT_POST_DELETE_BLOG_CATEGORY, Array( "category" => &$category ));
  89                          }
  90                      }
  91                  }
  92                  else {
  93                      $errorMessage .= $this->_locale->pr("error_deleting_blog_category2", $categoryId)."<br/>";
  94                  }
  95              }
  96              
  97              // prepare the view and all the information it needs to know
  98              $this->_view = new AdminBlogCategoriesListView( $this->_blogInfo );
  99              if( $errorMessage != "" ) 
 100                  $this->_view->setErrorMessage( $errorMessage );
 101              if( $successMessage != "" ) {
 102                  // and clear the cache to avoid outdated information
 103                  CacheControl::resetBlogCache( $this->_blogInfo->getId(), false );            
 104                  $this->_view->setSuccessMessage( $successMessage );
 105              }
 106                  
 107              $this->setCommonData();
 108              
 109              return true;
 110          }
 111  
 112          /**
 113           * Carries out the specified action
 114           */
 115          function perform()
 116          {
 117              // prepare the parameters.. If there's only one category id, then add it to
 118              // an array.
 119              if( $this->_mode == "deleteBlogCategory" ) {
 120                  $this->_categoryIds = Array();
 121                  $this->_categoryIds[] = $this->_request->getValue( "categoryId" );
 122              }
 123              else
 124                  $this->_categoryIds = $this->_request->getValue( "categoryIds" );
 125              
 126              return $this->_deleteBlogCategories();
 127          }
 128      }
 129  ?>