Thêm tùy chọn số trang trong magento

Adding rows per page to Magento admin grid 

Go to app/design/adminhtml/default/default/template/widget/grid.html (line 81) and add change this:

           <select name="<?php echo $this->getVarNameLimit() ?>" onchange="<?php echo $this->getJsObjectName() ?>.loadByElement(this)">
                <option value="20"<?php if($this->getCollection()->getPageSize()==20): ?> selected="selected"<?php endif; ?>>20</option>
                <option value="30"<?php if($this->getCollection()->getPageSize()==30): ?> selected="selected"<?php endif; ?>>30</option>
                <option value="50"<?php if($this->getCollection()->getPageSize()==50): ?> selected="selected"<?php endif; ?>>50</option>
                <option value="100"<?php if($this->getCollection()->getPageSize()==100): ?> selected="selected"<?php endif; ?>>100</option>
                <option value="200"<?php if($this->getCollection()->getPageSize()==200): ?> selected="selected"<?php endif; ?>>200</option>
            </select>

To this:

            <select name="<?php echo $this->getVarNameLimit() ?>" onchange="<?php echo $this->getJsObjectName() ?>.loadByElement(this)">
                <option value="20"<?php if($this->getCollection()->getPageSize()==20): ?> selected="selected"<?php endif; ?>>20</option>
                <option value="30"<?php if($this->getCollection()->getPageSize()==30): ?> selected="selected"<?php endif; ?>>30</option>
                <option value="50"<?php if($this->getCollection()->getPageSize()==50): ?> selected="selected"<?php endif; ?>>50</option>
                <option value="100"<?php if($this->getCollection()->getPageSize()==100): ?> selected="selected"<?php endif; ?>>100</option>
                <option value="200"<?php if($this->getCollection()->getPageSize()==200): ?> selected="selected"<?php endif; ?>>200</option>
                <option value="500"<?php if($this->getCollection()->getPageSize()==500): ?> selected="selected"<?php endif; ?>>500</option>
                <option value="1000"<?php if($this->getCollection()->getPageSize()==1000): ?> selected="selected"<?php endif; ?>>1000</option>
             </select>