{"description":"'author' has-many 'books' 'book' has-many 'chapters' \u307f\u305f\u3044\u306a\u3042\u308a\u304c\u3061\u306a DB \u3067 2 authors each author has 2 books each book has 3 chapters \u307f\u305f\u3044\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u3063\u3066Multi-step-prefetch \u3092\u305f\u3081\u3057\u3066\u307f\u305f\u3093\u3067\u3059\u3051\u3069\uff0c my @authors = $db->resultset('author')->search( { }, { prefetch => { 'book' => 'chapter' }, }, )->all; foreach my $author (@aut\u2026","title":" DBIC 0.7 \u3067 has-many \u306a nested multi-step prefetch \u304c\u3046\u307e\u304f\u30a4\u30ab\u30cd","blog_title":"daily dayflower","author_url":"https://blog.hatena.ne.jp/dayflower/","published":"2006-12-04 17:41:02","author_name":"dayflower","image_url":null,"categories":["perl","db","memo"],"type":"rich","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdayflower.hatenablog.com%2Fentry%2F20061204%2F1165221662\" title=\" DBIC 0.7 \u3067 has-many \u306a nested multi-step prefetch \u304c\u3046\u307e\u304f\u30a4\u30ab\u30cd - daily dayflower\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://dayflower.hatenablog.com/entry/20061204/1165221662","width":"100%","height":"190","version":"1.0","blog_url":"https://dayflower.hatenablog.com/"}