class author extends Eloquent {
protected $table = 'authors';
public function getAuthorBioAttribute ($value)
{
// when we ask for author::find(1);
// we will get an author, but we want
// to mutate the biography of the author
// based on what the author's book
// titles are.
}
public function books () {
return $this->hasMany('Book');
}
}
我要做的是查阅所有作者的书籍,然后根据所写的书籍改变作者的传记描述。当我们称这个模型为主要ID时,我将调整生物描述。但是,我不知道如何用Eloquent做到这一点。
books
表包含authors
表主键的外键。执行此突变的最佳方法是什么?我可以像$this->books()
那样调用书籍方法,并根据外键获取一系列书籍吗?
修改
更多插图。我想做的是这样的事情:
class author extends Eloquent {
protected $table = 'authors';
// Actually an accessor
public function getAuthorBioAttribute ($value)
{
//say $value contains "This string"
$books = $this->books();
// $books now has a collection of each book object
foreach ($books as $book) {
if ($book->category == 'gardening')
str_replace($value, "string", $book->category);
}
}
public function books () {
return $this->hasMany('Book');
}
}
然后在我的控制器中我想这样使用
public function authorBiography ($id) {
$author_stuff = author::find($id);
print_r($author_stuff->authorbio);
// say that specific author had written some books about gardening
// Output:
// "This gardening"
}
答案 0 :(得分:0)
首先,我认为你想要创建存取器而不是mutator。您可以访问foreach循环中的书籍项目:
public function getAuthorBioAttribute($value)
{
foreach ($this->books as $book) {
echo $book->category;
}
return "something";
}
根据您的实现和数据库结构,可能还有其他选择。你可以获得作者写的最多的书籍而不是书本(如果没有必要),你也可以在作者表中存储他最常写的书。