Hero for help! How does Thinkphp output specified value data?

Hero for help! How does Thinkphp output specified data! The items table has a cate_id field. I only want to output data with cate_id = 11. what should I do? I have read a lot of information on the Internet, and I have also read Thinkphp development documentation. I have no such introduction and asked for help.
I personally think it is mainly $ item_mod = m ("items"); this section decides to output data, but how to output only the data at the time of cate_id = 11 please help me!

 _mod = d( "items" );        $this->_cate_mod = d( "items_cate" );    }    public function index( )    {        $month = mktime( 0, 0, 0, date( "m" ), 1, date( "Y" ) );        $sign_log_mod = m( "sign_log" );        $map['uid'] = $this->visitor->info['id'];        $map['sign_date'] = array(            "egt",            $month        );        $sign_info = $sign_log_mod->field( "id,uid,username,sign_date" )->where( $map )->select( );        foreach ( $sign_info as $info )        {            $day = date( "d", $info['sign_date'] );            $sign[$day] = $info;        }        $order = "ordid asc ";        $sort = $this->_get( "sort", "trim", "hot" );        $status = $this->_get( "status", "trim", "all" );        switch ( $sort )        {        case "new" :            $order .= ", coupon_start_time DESC";            break;        case "price" :            $order .= ", price DESC";            break;        case "hot" :            $order .= ", volume DESC";        }        switch ( $status )        {        case "all" :            $where['status'] = "underway";            break;        case "underway" :            $where['status'] = "underway";            break;        case "sellout" :            $where['status'] = "sellout";        }        $where['pass'] = "1";        $index_info['sort'] = $sort;        $index_info['status'] = $status;        $page_size = c( "ftx_index_page_size" );        $p = $this->_get( "p", "intval", 1 );        $index_info['p'] = $p;        $start = $page_size * ( $p - 1 );        $item_mod = m( "items" );        $items_list = $item_mod->where( $where )->order( $order )->limit( $start.",".$page_size )->select( );        $items = array( );        foreach ( $items_list as $key => $val )        {            $items[$key] = $val;            $items[$key]['class'] = $this->_mod->status( $val['status'], $val['coupon_start_time'], $val['coupon_end_time'] );        }        f( "items_list", $items );        $this->assign( "items_list", $items );        $this->assign( "index_info", $index_info );        $count = $item_mod->where( $where )->count( );        $pager = $this->_pager( $count, $page_size );        $this->assign( "page", $pager->fshow( ) );        $this->assign( "total_item", $count );        if ( FALSE === ( $cate_list = f( "cate_list" ) ) )        {            $cate_list = d( "items_cate" )->cate_cache( );        }        $this->assign( "cate_list", $cate_list );        $item_comment_mod = m( "items_comment" );        $comm_map['status'] = "1";        $comment_list = $item_comment_mod->where( $comm_map )->order( "add_time DESC" )->limit( "0,10" )->select( );        $this->assign( "comment_list", $comment_list );        $this->assign( "nav_curr", "shijiu" );        $this->_config_seo( c( "ftx_seo_config.index" ) );        $this->display( );    }    public function so( )    {        $sort = $this->_get( "sort", "trim", "hot" );        $status = $this->_get( "status", "trim", "all" );        $cid = $this->_get( "cid", "trim" );        $k = $this->_get( "k", "trim" );        $order = "ordid asc ";        switch ( $sort )        {        case "new" :            $order .= ", coupon_start_time DESC";            break;        case "price" :            $order .= ", price DESC";        }        switch ( $status )        {        case "all" :            $where['status'] = "underway";            break;        case "underway" :            $where['status'] = "underway";            break;        case "sellout" :            $where['status'] = "sellout";        }        $where['title'] = array(            "like",            "%".$k."%"        );        $this->assign( "k", $k );        if ( $cid )        {            $id_arr = $this->_cate_mod->get_child_ids( $cid, TRUE );            $map['cate_id'] = array(                "IN",                $id_arr            );            $spid = $this->_cate_mod->where( array(                "id" => $cate_id            ) )->getField( "spid" );            if ( $spid == 0 )            {                $spid = $cid;            }            else            {                $spid .= $cid;            }            $this->assign( "cid", $cid );        }        $where['pass'] = "1";        $index_info['sort'] = $sort;        $index_info['status'] = $status;        $page_size = c( "ftx_index_page_size" );        $p = $this->_get( "p", "intval", 1 );        $index_info['p'] = $p;        $start = $page_size * ( $p - 1 );        $item_mod = m( "items" );        $items_list = $item_mod->where( $where )->order( $order )->limit( $start.",".$page_size )->select( );        $items = array( );        foreach ( $items_list as $key => $val )        {            $items[$key] = $val;            $items[$key]['class'] = $this->_mod->status( $val['status'], $val['coupon_start_time'], $val['coupon_end_time'] );        }        f( "items_list", $items );        $this->assign( "items_list", $items );        $this->assign( "index_info", $index_info );        $count = $item_mod->where( $where )->count( );        $pager = $this->_pager( $count, $page_size );        $this->assign( "page", $pager->fshow( ) );        $this->assign( "total_item", $count );        if ( FALSE === ( $cate_list = f( "cate_list" ) ) )        {            $cate_list = d( "items_cate" )->cate_cache( );        }        $this->assign( "cate_list", $cate_list );        $item_comment_mod = m( "items_comment" );        $comment_list = $item_comment_mod->order( "id DESC" )->limit( "0,10" )->select( );        $this->assign( "comment_list", $comment_list );        $this->assign( "nav_curr", "shijiu" );        $this->_config_seo( );        $this->display( );    }    public function shortcut( )    {        $Shortcut = "[InternetShortcut] \r\n\t\tURL=".." \r\n\t\tIDList= \r\n\t\t[{000214A0-0000-0000-C000-000000000046}] \r\n\t\tProp3=19,2 \r\n\t\t";        header( "Content-type: application/octet-stream" );        header( "Content-Disposition: attachment; filename=".c( "ftx_site_name" ).".url;" );        echo $Shortcut;    }    public function cate( )    {        $cid = $this->_get( "cid", "trim" );        $sort = $this->_get( "sort", "trim", "hot" );        $status = $this->_get( "status", "trim", "all" );        $order = "ordid asc ";        switch ( $sort )        {        case "new" :            $order .= ", coupon_start_time DESC";            break;        case "price" :            $order .= ", price DESC";        }        switch ( $status )        {        case "all" :            $map['status'] = "underway";            break;        case "underway" :            $map['status'] = "underway";            break;        case "sellout" :            $map['status'] = "sellout";        }        $id_arr = $this->_cate_mod->get_child_ids( $cid, TRUE );        $map['cate_id'] = array(            "IN",            $id_arr        );        $spid = $this->_cate_mod->where( array(            "id" => $cate_id        ) )->getField( "spid" );        if ( $spid == 0 )        {            $spid = $cid;        }        else        {            $spid .= $cid;        }        $this->assign( "cid", $cid );        $map['pass'] = "1";        $index_info['sort'] = $sort;        $index_info['status'] = $status;        $index_info['cid'] = $cid;        $page_size = c( "ftx_index_page_size" );        $p = $this->_get( "p", "intval", 1 );        $index_info['p'] = $p;        $start = $page_size * ( $p - 1 );        $item_mod = m( "items" );        $items_list = $item_mod->where( $map )->order( $order )->limit( $start.",".$page_size )->select( );        $items = array( );        foreach ( $items_list as $key => $val )        {            $items[$key] = $val;            $items[$key]['class'] = $this->_mod->status( $val['status'], $val['coupon_start_time'], $val['coupon_end_time'] );        }        f( "items_list", $items );        $this->assign( "items_list", $items );        $this->assign( "index_info", $index_info );        $count = $item_mod->where( $map )->count( );        $pager = $this->_pager( $count, $page_size );        $this->assign( "page", $pager->fshow( ) );        $this->assign( "total_item", $count );        if ( FALSE === ( $cate_list = f( "cate_list" ) ) )        {            $cate_list = d( "items_cate" )->cate_cache( );        }        $this->assign( "cate_list", $cate_list );        $item_comment_mod = m( "items_comment" );        $comm_map['status'] = "1";        $comment_list = $item_comment_mod->where( $comm_map )->order( "add_time DESC" )->limit( "0,10" )->select( );        $this->assign( "comment_list", $comment_list );        $this->assign( "nav_curr", "shijiu" );        $cate = d( "items_cate" )->where( array(            "id" => $cid        ) )->find( );        $this->_config_seo( c( "ftx_seo_config.cate" ), array(            "cate_name" => $cate['name'],            "seo_title" => $cate['seo_title'],            "seo_keywords" => $cate['seo_keys'],            "seo_description" => $cate['seo_desc']        ) );        $this->display( );    }}?>

Reply to discussion (solution)

$ Item_mod = m ("items"); add $ map ['Cate _ id'] = 11;
I don't know if the landlord wants this result. I hope it will help you.

Or you can do the same on the template page,
Add the following to the items_list loop: // The data you want to output

Or you can do the same on the template page,
Add the following to the items_list loop: // The data you want to output I want to output the data of cate_id = 11.

Reference the reply from nowphp on the second floor: Or you can do the same on the template page,
Add the following to the items_list loop: // The data you want to output I just want to output the data for cate_id = 11. well, the upstairs method is fine.

Reference the reply from zhouang1989 on the third floor: reference the reply from nowphp on the second floor: Or you can do the same on the template page,
Add the following to the items_list loop: // The data you want to output I just want to output the data for cate_id = 11. well, the upstairs method is fine.
Okay, thank you. I'll try it.

Or you can do the same on the template page,
Add the following to the items_list loop: // The data you want to output

How should I express the value of cate_id not equal to 11?

Reference the reply from nowphp on the second floor: Or you can do the same on the template page,
Add the following to the items_list loop: // The data you want to output

How should I express the value of cate_id not equal to 11?
// The data you want to output

Reference the reply from zhouang1989 on the 6th Floor: reference the reply from nowphp on the 2nd floor: Or you can do the same on the template page,
Add the following to the items_list loop: // The data you want to output

How should I express the value of cate_id not equal to 11?
......
Read the development documentation found Thank you http://www.thinkphp1.cn/info/115.html