- name => $param -> {author},
- email => $param -> {email},
- home => $param -> {homepage},
- image => $param -> {image},
- category => $param -> {category},
- subject => $param -> {subject},
+ name => $param -> {author} || '',
+ email => $param -> {email} || '',
+ home => $param -> {homepage} || '',
+ image => $param -> {image} || '',
+ category => $param -> {category} || '',
+ subject => $param -> {subject} || '',