建立作者表單

const { body, validationResult } = require("express-validator");

// Display Author create form on GET.
exports.author_create_get = (req, res, next) => {
  res.render("author_form", { title: "Create Author" });
};

// Handle Author create on POST.
exports.author_create_post = [
  // Validate and sanitize fields.
  body("first_name")
    .trim()
    .isLength({ min: 1 })
    .escape()
    .withMessage("First name must be specified.")
    .isAlphanumeric()
    .withMessage("First name has non-alphanumeric characters."),
  body("family_name")
    .trim()
    .isLength({ min: 1 })
    .escape()
    .withMessage("Family name must be specified.")
    .isAlphanumeric()
    .withMessage("Family name has non-alphanumeric characters."),
  body("date_of_birth", "Invalid date of birth")
    .optional({ values: "falsy" })
    .isISO8601()
    .toDate(),
  body("date_of_death", "Invalid date of death")
    .optional({ values: "falsy" })
    .isISO8601()
    .toDate(),

  // Process request after validation and sanitization.
  asyncHandler(async (req, res, next) => {
    // Extract the validation errors from a request.
    const errors = validationResult(req);

    // Create Author object with escaped and trimmed data
    const author = new Author({
      first_name: req.body.first_name,
      family_name: req.body.family_name,
      date_of_birth: req.body.date_of_birth,
      date_of_death: req.body.date_of_death,
    });

    if (!errors.isEmpty()) {
      // There are errors. Render form again with sanitized values/errors messages.
      res.render("author_form", {
        title: "Create Author",
        author: author,
        errors: errors.array(),
      });
      return;
    } else {
      // Data from form is valid.

      // Save author.
      await author.save();
      // Redirect to new author record.
      res.redirect(author.url);
    }
  }),
];

extends layout

block content
  h1=title

  form(method='POST')
    div.form-group
      label(for='first_name') First Name:
      input#first_name.form-control(type='text', placeholder='First name (Christian)' name='first_name' required value=(undefined===author ? '' : author.first_name) )
      label(for='family_name') Family Name:
      input#family_name.form-control(type='text', placeholder='Family name (Surname)' name='family_name' required value=(undefined===author ? '' : author.family_name))
    div.form-group
      label(for='date_of_birth') Date of birth:
      input#date_of_birth.form-control(type='date' name='date_of_birth' value=(undefined===author ? '' : author.date_of_birth) )
    button.btn.btn-primary(type='submit') Submit

  if errors
    ul
      for error in errors
        li!= error.msg