How to add a foreach-like feature to the Smarty to load data automatically

Use custom Plug-ins in Smarty to load data (see: Write a detailed description of the Smarty plug-in loading data directly in the template), or feel inconvenient when it is used, and brainwave want to write a label like foreach:

Step One: Add in the _compile_tag function of Smarty_Compiler.class.php:

Copy Code code as follows:


//Load start tag for data


case ' load ':


$this->_push_tag (' Load ');


return $this->_complie_load_start ($tag _args);


break;


//Load end tag for data


case '/load ':


$this->_pop_tag (' Load ');


return "<?php Endforeach; endif Unset (/$_from);?> ";


break;

Step Two: Add a method:

Copy Code code as follows:


/**


* Load Data


* @param $tag _args


*/


function _complie_load_start ($tag _args)


{


$key = substr (MD5 ($tag _args), 8, 16); Generates a special variable name based on the parameter


$attrs = $this->_parse_attrs ($tag _args);


//Here can add more processing


$class = (!isset ($attrs [' class ']) | | | empty ($attrs [' class ']))? ' Cls_crud ': Trim ($attrs [' class ']);


(!isset ($attrs [' table ']) | | empty ($attrs [' table '])] && exit (' table ' is empty! ');


$db = $class:: Factory (Array (' table ' => substr ($attrs [' table '], 1,-1));


//define new variable


$this->_tpl_vars[$key] = $db->get_block_list (Array (substr ($attrs [' where '], 1,-1)), $attrs [' limit ']);


$tag _args = "from=/${$key}". $tag _args;





//Invoke the Foreach tag handler function for processing


return $this->_compile_foreach_start ($tag _args);


}

This allows you to use the load tag in the template. Usage for example:

Copy Code code as follows:

{load table= ' test ' where= ' id ' <100 ' limit=10 Item=rec}
...
{/load}