Source: Rails Guide
:primary_key
:string
:text
:integer
:float
:decimal
:datetime
:timestamp
:time
:date
:binary
:boolean
.
$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }
Source: Rails Guide
:primary_key
:string
:text
:integer
:float
:decimal
:datetime
:timestamp
:time
:date
:binary
:boolean
.