add the failed comment to add to the post's comments list.
to show the failed comment as error.
if $comment entity has error, show as error comment and show message.
use CenaEntity's newEntity method to create new Tag entity;
so that Doctrine2's em can handle it.
introduce Tags class as a resource manage all tags.
make Tags as an iterator to make code simple.
clean up code.
use manipulate object to delete an entity.
process input inside edit.php itself.
edit form when failed to put/post. show delete check box as checked if the comment is going to be deleted.
show error messages.
modifiy form and style.
create new Comment entity using CM's newEntity method; also use manipulate to delete an entity.
use MappedSuperClass for Post/PostDto entity classes.
test should test the demo's models and resources.
removed unused test's entities.
use MappedSuperClass for entities and its Dto.
create TagValidator to check form input and entity.
tags link expect an array as an input.
use immediate function pattern to execute some code.
write README.ja.md in Japanese.
write about.php page. add tables image.