我正在使用Express,Node和Pug构建应用。在Express中,我有GET books/:id
的端点。我抓住了中间件函数中的所有书籍,然后渲染了视图。在视图中,我遍历所有书籍,而不是只显示一本书籍细节,而是显示所有书籍。我如何只渲染一本书的详细信息视图?
这是详细页面端点:
// GET the book detail page
router.get('/:id', (req, res, next) => {
bookQuery = Book.findAll({
include: [
{ model: Loan }
],
order: [["title", "DESC"]]
}).then((books) => {
console.log(books);
res.render('book_detail', {
books: books,
// title: loans.Book.title,
// author: loans.Book.author,
// genre: loans.Book.genre,
// first_published: loans.Book.first_published,
// patronFirstName: loans.Patron.first_name,
// patronLastName: loans.Patron.last_name,
// loanedOn: loans.loaned_on,
// return_by: loans.return_by,
// returned_on: loans.returned_on
});
});
});
以下是观点:
extends ./layout
block content
body
each book in books
h1 Book: #{book.title}
form
p
label(for='title') Title
input#title(type='text', value=book.title)
p
label(for='author') Author
input#author(type='text', value=book.author)
p
label(for='genre') Genre
input#genre(type='text', value=book.genre)
p
label(for='first_published') First Published
input#first_published(type='text',
value=book.first_published)
p
input(type='submit', value='Update')
h2 Loan History
table
thead
tr
th Book
th Patron
th Loaned on
th Return by
th Returned on
th Action
tbody
tr
td
a(href=`/books/book_detail`)= book.title
td
//- a(href=`/patrons/patron_detail`)=book.Loan.first_name + ' ' + book.Loan.last_name
if book.Loan
a(href='patron_detail.html')
td= book.Loan.loaned_on
td= book.Loan.return_by
td= book.Loan.returned_on
td
a.button(href='return_book.html') Return Book
答案 0 :(得分:1)
这与帕格无关。帕格只是渲染数据。
问题是您使用的是Book.findAll()
。这得到了一系列书籍。您应该使用Book.findOne()
来获取单个图书。您还需要指定where: { id: req.params.id }
以查找URL中提供了ID的一本书。
您可能还想将变量books
更改为book
。并且视图中的行each book in books
是不必要的。
Model Usage section of the manual有很多查询示例。我觉得比上面链接的API参考更容易阅读。