Magento后台模块示例(2) - Magento[页4]

溜鱼,994368单双连中,李开复演讲稿

后台控制器的位置：
controllers/Adminhtml/CountController.php

<?php

class Message_Count_Adminhtml_CountController extends Mage_Adminhtml_Controller_action
{

    protected function _initAction() {
        $this->loadLayout()
            ->_setActiveMenu('count/items')
            ->_addBreadcrumb(Mage::helper('adminhtml')->__('Items Manager'), Mage::helper('adminhtml')->__('Item Manager'));
        
        return $this;
    }   
 
    public function indexAction() {
        $this->_initAction()
            ->renderLayout();
    }
    //编辑
    public function editAction() {
        $id     = $this->getRequest()->getParam('id');
        $model  = Mage::getModel('count/count')->load($id);

        if ($model->getId() || $id == 0) {
            $data = Mage::getSingleton('adminhtml/session')->getFormData(true);
            if (!empty($data)) {
                $model->setData($data);
            }

            Mage::register('count_data', $model);

            $this->loadLayout();
            $this->_setActiveMenu('count/items');

            $this->_addBreadcrumb(Mage::helper('adminhtml')->__('Item Manager'), Mage::helper('adminhtml')->__('Item Manager'));
            $this->_addBreadcrumb(Mage::helper('adminhtml')->__('Item News'), Mage::helper('adminhtml')->__('Item News'));

            $this->getLayout()->getBlock('head')->setCanLoadExtJs(true);

            $this->_addContent($this->getLayout()->createBlock('count/adminhtml_count_edit'))
                ->_addLeft($this->getLayout()->createBlock('count/adminhtml_count_edit_tabs'));

            $this->renderLayout();
        } else {
            Mage::getSingleton('adminhtml/session')->addError(Mage::helper('count')->__('Item does not exist'));
            $this->_redirect('*/*/');
        }
    }
 
    public function newAction() {
        $this->_forward('edit');
    }
    //存储数据
    public function saveAction() {
        if ($data = $this->getRequest()->getPost()) {
            $model = Mage::getModel('count/count');        
            $model->setData($data)
                ->setId($this->getRequest()->getParam('id'));
            
            try {
                if ($model->getCreatedTime == NULL || $model->getUpdateTime() == NULL) {
                    $model->setCreatedTime(now())
                        ->setUpdateTime(now());
                } else {
                    $model->setUpdateTime(now());
                }    
                
                $model->save();
                Mage::getSingleton('adminhtml/session')->addSuccess(Mage::helper('count')->__('Item was successfully saved'));
                Mage::getSingleton('adminhtml/session')->setFormData(false);

                if ($this->getRequest()->getParam('back')) {
                    $this->_redirect('*/*/edit', array('id' => $model->getId()));
                    return;
                }
                $this->_redirect('*/*/');
                return;
            } catch (Exception $e) {
                Mage::getSingleton('adminhtml/session')->addError($e->getMessage());
                Mage::getSingleton('adminhtml/session')->setFormData($data);
                $this->_redirect('*/*/edit', array('id' => $this->getRequest()->getParam('id')));
                return;
            }
        }
        Mage::getSingleton('adminhtml/session')->addError(Mage::helper('count')->__('Unable to find item to save'));
        $this->_redirect('*/*/');
    }
    //删除
    public function deleteAction() {
        if( $this->getRequest()->getParam('id') > 0 ) {
            try {
                $model = Mage::getModel('count/count');
                 
                $model->setId($this->getRequest()->getParam('id'))
                    ->delete();
                     
                Mage::getSingleton('adminhtml/session')->addSuccess(Mage::helper('adminhtml')->__('Item was successfully deleted'));
                $this->_redirect('*/*/');
            } catch (Exception $e) {
                Mage::getSingleton('adminhtml/session')->addError($e->getMessage());
                $this->_redirect('*/*/edit', array('id' => $this->getRequest()->getParam('id')));
            }
        }
        $this->_redirect('*/*/');
    }
    //批量删除
    public function massDeleteAction() {
        $webIds = $this->getRequest()->getParam('count');
        if(!is_array($webIds)) {
            Mage::getSingleton('adminhtml/session')->addError(Mage::helper('adminhtml')->__('Please select item(s)'));
        } else {
            try {
                foreach ($webIds as $webId) {
                    $count = Mage::getModel('count/count')->load($webId);
                    $count->delete();
                }
                Mage::getSingleton('adminhtml/session')->addSuccess(
                    Mage::helper('adminhtml')->__(
                        'Total of %d record(s) were successfully deleted', count($webIds)
                    )
                );
            } catch (Exception $e) {
                Mage::getSingleton('adminhtml/session')->addError($e->getMessage());
            }
        }
        $this->_redirect('*/*/index');
    }
    
    public function massStatusAction()
    {
        $webIds = $this->getRequest()->getParam('count');
        if(!is_array($webIds)) {
            Mage::getSingleton('adminhtml/session')->addError($this->__('Please select item(s)'));
        } else {
            try {
                foreach ($webIds as $webId) {
                    $count = Mage::getSingleton('count/count')
                        ->load($webId)
                        ->setStatus($this->getRequest()->getParam('status'))
                        ->setIsMassupdate(true)
                        ->save();
                }
                $this->_getSession()->addSuccess(
                    $this->__('Total of %d record(s) were successfully updated', count($webIds))
                );
            } catch (Exception $e) {
                $this->_getSession()->addError($e->getMessage());
            }
        }
        $this->_redirect('*/*/index');
    }
}

控制器写好之后，来看看后台的block文件夹怎么写，

归并排序 - 专栏只能建一个

归并（Merge）排序法是将两个（或两个以上）有序表合并成一个新的有序表，即把待排序序列分为若干个子序列，每个子序列是有序的。然后再把有序子序列合并为整体有序序列。

归并排序及其优化 - Code

简单实现如果有两个数组已经有序，那么可以把这两个数组归并为更大的一个有序数组。归并排序便是建立在这一基础上。要将一个数组排序，可以将它划分为两个子数组分别排序，然后将结果归并，使得整体有序。