什么是一个好的完整正则表达式或其他一些过程,将采取标题:
如何将标题更改为URL的一部分,如堆栈溢出?
然后把它变成
how-do-you-change-a-title-to-be-part-of-the-url-like-stack-overflow
在堆栈溢出的seo友好的url中使用?
我使用的开发环境是Ruby on Rails,但是如果有一些其他特定于平台的解决方案(。NET, PHP, Django),我也很想看到这些。
我相信我(或其他读者)在不同的平台上也会遇到同样的问题。
我使用自定义路由,我主要想知道如何改变字符串的所有特殊字符被删除,它都是小写的,所有空白被替换。
为了更好地衡量,这里是WordPress中的PHP函数…我认为WordPress是使用花哨链接的最受欢迎的平台之一。
function sanitize_title_with_dashes($title) {
$title = strip_tags($title);
// Preserve escaped octets.
$title = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title);
// Remove percent signs that are not part of an octet.
$title = str_replace('%', '', $title);
// Restore octets.
$title = preg_replace('|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title);
$title = remove_accents($title);
if (seems_utf8($title)) {
if (function_exists('mb_strtolower')) {
$title = mb_strtolower($title, 'UTF-8');
}
$title = utf8_uri_encode($title, 200);
}
$title = strtolower($title);
$title = preg_replace('/&.+?;/', '', $title); // kill entities
$title = preg_replace('/[^%a-z0-9 _-]/', '', $title);
$title = preg_replace('/\s+/', '-', $title);
$title = preg_replace('|-+|', '-', $title);
$title = trim($title, '-');
return $title;
}
这个函数以及一些支持函数可以在wp-includes/formatting.php中找到。
如果你正在使用Rails edge,你可以依赖Inflector。参数化-下面是文档中的例子:
class Person
def to_param
"#{id}-#{name.parameterize}"
end
end
@person = Person.find(1)
# => #<Person id: 1, name: "Donald E. Knuth">
<%= link_to(@person.name, person_path(@person)) %>
# => <a href="/person/1-donald-e-knuth">Donald E. Knuth</a>
另外,如果你需要在以前版本的Rails中处理更多的外来字符,比如重音(éphémère),你可以混合使用PermalinkFu和DiacriticsFu:
DiacriticsFu::escape("éphémère")
=> "ephemere"
DiacriticsFu::escape("räksmörgås")
=> "raksmorgas"
为了更好地衡量,这里是WordPress中的PHP函数…我认为WordPress是使用花哨链接的最受欢迎的平台之一。
function sanitize_title_with_dashes($title) {
$title = strip_tags($title);
// Preserve escaped octets.
$title = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title);
// Remove percent signs that are not part of an octet.
$title = str_replace('%', '', $title);
// Restore octets.
$title = preg_replace('|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title);
$title = remove_accents($title);
if (seems_utf8($title)) {
if (function_exists('mb_strtolower')) {
$title = mb_strtolower($title, 'UTF-8');
}
$title = utf8_uri_encode($title, 200);
}
$title = strtolower($title);
$title = preg_replace('/&.+?;/', '', $title); // kill entities
$title = preg_replace('/[^%a-z0-9 _-]/', '', $title);
$title = preg_replace('/\s+/', '-', $title);
$title = preg_replace('|-+|', '-', $title);
$title = trim($title, '-');
return $title;
}
这个函数以及一些支持函数可以在wp-includes/formatting.php中找到。
我将代码移植到TypeScript中。它可以很容易地适应JavaScript。
我添加了一个.contains方法到字符串原型,如果你的目标是最新的浏览器或ES6,你可以使用.includes代替。
if (!String.prototype.contains) {
String.prototype.contains = function (check) {
return this.indexOf(check, 0) !== -1;
};
}
declare interface String {
contains(check: string): boolean;
}
export function MakeUrlFriendly(title: string) {
if (title == null || title == '')
return '';
const maxlen = 80;
let len = title.length;
let prevdash = false;
let result = '';
let c: string;
let cc: number;
let remapInternationalCharToAscii = function (c: string) {
let s = c.toLowerCase();
if ("àåáâäãåą".contains(s)) {
return "a";
}
else if ("èéêëę".contains(s)) {
return "e";
}
else if ("ìíîïı".contains(s)) {
return "i";
}
else if ("òóôõöøőð".contains(s)) {
return "o";
}
else if ("ùúûüŭů".contains(s)) {
return "u";
}
else if ("çćčĉ".contains(s)) {
return "c";
}
else if ("żźž".contains(s)) {
return "z";
}
else if ("śşšŝ".contains(s)) {
return "s";
}
else if ("ñń".contains(s)) {
return "n";
}
else if ("ýÿ".contains(s)) {
return "y";
}
else if ("ğĝ".contains(s)) {
return "g";
}
else if (c == 'ř') {
return "r";
}
else if (c == 'ł') {
return "l";
}
else if (c == 'đ') {
return "d";
}
else if (c == 'ß') {
return "ss";
}
else if (c == 'Þ') {
return "th";
}
else if (c == 'ĥ') {
return "h";
}
else if (c == 'ĵ') {
return "j";
}
else {
return "";
}
};
for (let i = 0; i < len; i++) {
c = title[i];
cc = c.charCodeAt(0);
if ((cc >= 97 /* a */ && cc <= 122 /* z */) || (cc >= 48 /* 0 */ && cc <= 57 /* 9 */)) {
result += c;
prevdash = false;
}
else if ((cc >= 65 && cc <= 90 /* A - Z */)) {
result += c.toLowerCase();
prevdash = false;
}
else if (c == ' ' || c == ',' || c == '.' || c == '/' || c == '\\' || c == '-' || c == '_' || c == '=') {
if (!prevdash && result.length > 0) {
result += '-';
prevdash = true;
}
}
else if (cc >= 128) {
let prevlen = result.length;
result += remapInternationalCharToAscii(c);
if (prevlen != result.length) prevdash = false;
}
if (i == maxlen) break;
}
if (prevdash)
return result.substring(0, result.length - 1);
else
return result;
}
我不熟悉Ruby on Rails,但以下是(未经测试的)PHP代码。如果您觉得有用的话,可以很快地将其转换为Ruby on Rails。
$sURL = "This is a title to convert to URL-format. It has 1 number in it!";
// To lower-case
$sURL = strtolower($sURL);
// Replace all non-word characters with spaces
$sURL = preg_replace("/\W+/", " ", $sURL);
// Remove trailing spaces (so we won't end with a separator)
$sURL = trim($sURL);
// Replace spaces with separators (hyphens)
$sURL = str_replace(" ", "-", $sURL);
echo $sURL;
// outputs: this-is-a-title-to-convert-to-url-format-it-has-1-number-in-it
我希望这能有所帮助。