where multi-condition query in thinkphp

Do a query for data today

$products =m (' products ');

$prodName =isset ($_post[' prodname ')? I (' Post.prodname '): ';

$products->join (' left join prods on prods.prodid = Products.prodid ')
->limit ($page->firstrow. ‘,‘ . $page->listrows)
->where (' protypeid= '. $proTypeId)

This time I need to make a fuzzy match to the data table prods

So the whim in $map[' ProdName ']=array (' like ', '% $prodName% ');

Add the table name in the database will not be successfully read, the result is successful

$map [' Prods.prodname ']=array (' like ', '% $prodName% ');

where multi-condition query in thinkphp