So I have a site with a dozen pages on it using Drupal as a CMS. Wanted to know how to set/append all href links on any page with a dynamic attribute?
so here is an example URL:
http://www.site.com/?q=node/4
and I wanted to append to the URL like so:
http://www.site.com/?q=node/4&attr=1234
Now I have a nav bar on the site and when I hover over the link I see the url but I need to append the &attr=1234 string to the end of it. The string is dynamic so it might change from time to time.
I was thinking jQuery would be a good choice to do this but does Drupal have any functionality as well?
Now I've seen a couple of posts on Stack:
Post 1
Post 2
Problem is I'm learning my way around Drupal and have minimal experience with jQuery but getting better with both. I see the jQuery can replace a HREF but looks like they hard coded the HREF, could jQuery find all HREF's on a page and append the string to it? Also does Drupal have this functionality and what would be the best approach?
Also need this to work for clean or standard URL format, so I think Apache would handle this I just wanted to make sure.
Thanks for any help
EDIT:
Looks like the general consensus is the Drupal should handle this type of request. Just looking for the best implementation. Simple function call would be best but I would like it to dynamically add it to all existing href's as I want this to be dynamic instead of hard coding any url/href calls. So I could add/remove pages on the fly without the need to reconfigure/recode anything.
Thanks for the great tips though
EDIT #2:
Okay maybe I'm asking the wring question. Here is what I need and why it's not working for me yet.
I need to pass a value in the url that changes some of the look and feel of the site. I need it to be passed on just about every href tag on the page but not on User logout or Admin pages.
I see in my template code where the nav links get generated, so I though I could pass my code in the attributes array as the second parm to the function, but that is setting the tag attributes and not the URL attributes.
Now I see the bottom nav links use this Drupal function: menu_navigation_links() in menu.inc but the top nav uses a custom function.
This function in the template.php script looks to be the one creating the links
function lplus($text, $path, $options = array()) {
global $language;
// Merge in defaults.
$options += array(
'attributes' => array(),
'html' => FALSE,
);
// Append active class.
if (($path == $_GET['q'] || ($path == '<front>' && drupal_is_front_page())) &&
(empty($options['language']) || $options['language']->language == $language->language)) {
if (isset($options['attributes']['class'])) {
$options['attributes']['class'] .= ' active';
}
else {
$options['attributes']['class'] = 'active';
}
}
// Remove all HTML and PHP tags from a tooltip. For best performance, we act only
// if a quick strpos() pre-check gave a suspicion (because strip_tags() is expensive).
if (isset($options['attributes']['title']) && strpos($options['attributes']['title'], '<') !== FALSE) {
$options['attributes']['title'] = strip_tags($options['attributes']['title']);
}
return '<a href="'. check_url(url($path, $options)) .'"'. drupal_attributes($options['attributes']) .'><b>'. ($options['html'] ? $text : check_plain($text)) .'</b></a>';
}
not sure how to incorporate what I need into this function.
So on the home page the ?q=node/ is missing and if I append the ampersand it throws an error.
http://www.site.com/&attr=1234 // throws error
But if I mod it to the correct format it works fine
http://www.site.com/?attr=1234
Assuming that when you mean pages, you mean the content type of pages (will work for any other content type as long as it's really content and not something in a block or view).
You can easily replace the contents of any node that is about to be viewed by running a str_replace or with a regular expression. For instance, using str_replace:
function module_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
switch($op) {
case "view":
$node->body = str_replace($expected_link, $desired_link);
break;
}
}
where you define desired link somewhere else. Not an optimal solution, but non-Javascript browsers (yes, they still exist!) can't get around the forced, desired URLs if you try to change it with Javascript.
I think doing it in Drupal/PHP would be cleaner. Check out Pathauto module: http://drupal.org/node/17345
There is a good discussion on a related topic here:
http://drupal.org/node/249864
This wouldn't use jquery (instead you would overwrite a function using PHP) but you could get the same result. This assumes, however, that you are working with menu links.
I think you should consider exploring PURL ( http://drupal.org/project/purl ) and some of the modules it works with e.g. spaces and context.
I don't suggest you use jQuery to do this. It's a better practice to do this server side in PHP (Drupal).
You can overwrite the links dynamically into your preprocess page function.
On your template.php file:
function *yourtheme*_preprocess_page(&$vars, $hook){
//You can do it for the region that you need
$vars['content'] = preg_replace('/<a href="(.*?)"/i', '<a href="$1&attr=1234"', $vars['content']);
}
Note:
I did not try it, its only a hint.
It will add your parameters to the outside links too.
Related
I'm puttings filters in links with GET variables like this: http://example.com/list?size=3&color=7 and I'd like to remove any given filter parameter from URL whenever a different value for that particular filter is selected so that it doesn't, for example, repeat the color filter like so:
http://example.com/list?size=3&color=7&color=1
How can I if(isset($_GET['color'])) { removeGet('color'); } ?
You can use parse_url and parse_str to extract parameters like in example below:
$href = 'http://example.com/list?size=3&color=7';
$query = parse_url( $href, PHP_URL_QUERY );
parse_str( $query, $params );
// set custom paramerets
$params['color'] = 1;
// build query string
$query = http_build_query( $params );
// build url
echo explode( '?', $href )[0] . '?' . $query;
In this example explode() is used to extract the part of the url before the query string, and http_build_query to generate query string, you can also use PECL http_build_url() function, if you cannot use PECL use alternative like in this question.
You can't remove variables from GET request, just redirect to address without this var.
if (isset($_GET['color'])) {
header ('Location: http://www.example.com/list?size=' . $_GET['size']);
exit;
}
Note: in URL http://example.com/list?size=3&color=7&color=1 is just one $_GET['color'], not two. Only one of them is taken. You can check, is $_GET['key'] exists, but you don't know how many of them you have in your URL
So, assuming I'm understanding your question correctly.
Your situation is as follows:
- You are building URLs which you put into a webpage as a link ( <a href= )
- You are using the GET syntax/markup (URL?key=value&anotherkey=anothervalue) as a way to assign filters of some sort which the user then receives when they click on a given link
What you want is to be able to modify one of the items in your GET parameter list (http://example.com/list?size=3&color=7&color=1) so you have only one filter key but you can modify the filter value. So instead of the above you would start with: (http://example.com/list?size=3&color=7) but after changing the color 'filter' you would instead have http://example.com/list?size=3&color=1).
Additionally you want to do the above in PHP, (as opposed to JavaScript etc...).
There are a lot of ways to implement the change and the most effective way to do it depends on what you are already doing, most likely.
First, if you are dynamically producing the HTML markup which includes the links with the filter text, (which is what it sounds like), then it makes the most sense to create a PHP array to hold your GET parameters, then write a function that would turn those parameters into the GET string.
New filters would appear when a user refreshed the page, (because, if you are dynamically producing the HTML then a server request is required to rebuild the page).
IF, however, you want to update the link URLs on a live page WITHOUT a reload look into doing it with JavaScript, it will make your life easier.
NOTE: It is likely possible to modify the page, assuming the links are hard coded, & the page is hard coded markup, by opening the page as a file in PHP & making the appropriate change. It's my opinion that this would be a headache and not worth the time & effort AND it would still require a page reload (which you could NOT trigger yourself).
Summary
If you are writing dynamic pages with PHP it shouldn't be a big deal, just create a structure (class or array) and a method/function to write that structure out as a GET string. The structure could then be modified according to your desire before generating the page.
If, however, you are dealing with a static page, I recommend JavaScript (either creating js structures to allow a user to dynamically select filters or utilizing AJAX to build new GET parameter lists with PHP and send that back to the javascript).
(NOTE: I am reminded that I have done something along the lines of modifying links on-the-fly for existing pages by intercepting them before they are displayed to the user [using PHP] but my hands were tied in other areas and I would not recommend it if you have a choice AND it should be noted that this still required a reload...)
Try doing something like this in your back-end script:
$originalValues=array();
foreach($_GET as $filter=>$value)
{
if(empty($originalValues[$filter]))
$originalValues[$filter] = $value;
}
This may do what you want, but it feels hackish. You may want to revise your logic.
Good luck!
just put a link/button send the user to index... like this.
<a class="btn btn-primary m-1" href="http:yoururl/index.php" role="button">Limpar</a>
in my forum, I'm trying to stop links from converting into clickbale links and place a custom text language instead that says Links Not Allowed.
This seems to be the code that creates the clickable links. My question, is it possible to convert the urls to non-clickable text that says "Spam - Links Not Allowed"
public function parseUrl($params) {
$url = $params['url'];
$text = $params['text'];
If I remove this last line, it seems to make the links disappear, however I would like to display a custom message instead. Sorry if this is a basic question, my code knowledge is at a beginner level.
It's not just server side action, for this reason you should call JS function, so, at first change your php code to this :
$url = $params['javascript:myfunction();'];
and then in client side for javascript write this :
function myfunction(){
alert('not allowed!');
}
$text = $params['text'];
replace "text" with "spam - links not allowed."
In terms of how to make it not clickable, I need to see where the link is actually used.
My first contact with Ajax is happening right now, and I'm kind a confused. I've read many of questions asked, but I'm not able to read the answer, that is most likely here somewhere.
Situation is, I'm using OOP PHP approach, and all I do go through index.php with parameters. So I do not call any other .php file in form posts, button clicks..
I've created an HTML listbox (which I'd like to remove vertical scrollbar, but that's just a bonus to resolve), which feeds my categories in it.
Now, by clicking each category I'd like to call certain function that would then generate output for the other div.
function swapContent(){
$("#myPresentDiv").html('<img src="../../imgs/ajax-loader-big.gif"/>').show();
var cat = $('#listbox').val();
$("#action").change(alert(cat));
var url = "&s=".cat;
$.post(url, {contentVar: cat} ,function(data) {
$("#myPresentDiv").html(data).show();
});
}
So, my JQuery script picks up correct Category, I alert it to alert dialog, so I'm sure that's fine, and then with code as it is at the moment, I reload my whole page so I get, page in page in page in page...
I'm trying to figure out how to write JQ ajax call, that would return only the results, not the whole page.
can I put URL "index.php&s="cat, and then somehow tell to ajax "go through index, call function displayresults ($cat); ?
Hope everything I wrote make sense to you :)
Tnx.
The url's your ajax function call, must return only the page parts and not the whole html document.
If you have
$.post('ajax.php',data,function(d){
$('#responsediv').html(d).show();
});
The file ajax.php must only return the page parts,like
<div>This is the new content</div>
so you will not have page inside page.
If you look at the frameworks or cms out there, they basically have routes that map calls to your index.php function to methods of the controller.
This is a complex argument, you could try to start out reading this article
Yeah, that makes sense. Your question is basically: when you get a result of an AJAX op and insert it into your page, it inserts the whole layout again, rather than the template.
OK, so the solution is to make a call to a PHP script that is "unstyled" i.e. has no template data. Your PHP script should therefore just output a short HTML snippet rather than a page (you might have a 'header' and 'footer' that can be removed for this page). What action you need to take depends what you're using on the server side - framework? CMS? Custom PHP app?
I did the exact thing for a internal app quite some time ago....What happened was i was passing the class name, function name and the function parameters via ajax variables and reading the same in php at the backend and then call the appropriate function in the class with those paraeters.
The PHP code:
$option = trim($_GET['v']);
switch ( $option ) {
case 1:
$sid = trim($_GET['q']);
$page = trim($_GET['p']);
$method = trim($_GET['m']);
$class = new $page( $link );
echo $class->$method( $sid );
break;
case 2:
$page = trim($_GET['p']);
$method = trim($_GET['m']);
$class = new $page( $link );
echo $class->$method();
break;
default:
echo '';
break;
}
But this was an internal app, so there was no injection attacks, xss,xsrf,session hijack issues....things might differ for you
Hope this helps.
I think you are searching for a GENERAL strategy to handle ajax requests its upto you
for example Server Side Ajax
unless you are using a specific framework (CI , yii etc)
You might want to look into some frameworks, as they can make this for you infinitely easier to implement:
http://demo.atk4.com/demo.html?t=20
I've been looking around for some way to either code up links using bbcode or manually convert a url in a specified message to a link. BBCodes to me are just getting a little old. Although, are still massively heavily used for such things as smileys etc.
I'd be looking to probably do a mixture of the two functionalities.
Can anyone advise on something they use or have used recently for prettifying a messaging system, so to speak.
As far as converting links, Codeigniter's got you covered with the url helper:
auto_link()
Automatically turns URLs and email addresses contained in a string
into links. Example: $string = auto_link($string);
The second parameter determines whether URLs and emails are converted
or just one or the other. Default behavior is both if the parameter is
not specified. Email links are encoded as safe_mailto() as shown
above.
As for smilies, that's covered as well. There is actually a smiley helper:
If you give up and want to parse bbcode, here's a helper written by Phil Sturgeon (a lead Codeigniter developer): https://github.com/bcit-ci/CodeIgniter/wiki/BBCode-Helper
If you wanted to go with something client side for BBCode interpritation, I've written an extendible BBCode parser in JavaScript.
It has all of the standard BBCode tags, but if your messaging system needed some new tags for certain kinds of URL manipulation they could be easily added. As an example, for a smilies tag you could extend it like this:
"smiley": {
openTag: function(params,content) {
if (content === ":)") {
return "<img src='smiley.png'/>";
} else if (content === ":(") {
return "<img src='frown.png'/>";
} else {
return "";
}
},
closeTag: function(params,content) {
return "";
}
}
And then the BBCode would look something like:
[smiley]:)[/smiley]
And the HTML code it would generate from that would look like this:
<img src='smiley.png'/>
This might be more work than what you want and you may not want your own custom tags for your messaging system, but I figured I'd mention it just in case.
what is the l.php
im guessing l.php is link.php on
facebook. its a pre-redirecting
script. every link on facebook is
filtered to link.php?to=link
i have some things in mind. like
make a render class or filter the input with regex, finds an www.link.com then change it to something like link , the problem is when we have some changes, if we change something then all our archives links isn't going to work ( assume that we put the input to the database. ).
use a JavaScript to do this, i mean yes, but im not familiar with js, but i know we can search and change the links live like above. but the problem is when the user doesn't have a js on, ( mobile, or no JavaScript plugin, etc )
or maybe you have a better answer what is the best way we implant l.php ?
This would be one of the pros of using a function to generate links in your views:
link text
Your build_link() would be like so:
function build_link($path)
{
$prefix = '';
if (preg_match('|^(https?://|www\.)', $path))
{
$prefix = 'http://www.oursite.php?to=';
}
return $prefix . $path;
}
This means you could even use a CDN easily amongst your links.
The easiest option is to use Javascript, but like you say is reliant on the user to have Javascript enabled browser, which is highly likey due to the advance in browser technology, even in the mobile platform. The jQuery would look like so:
$(document).ready(function() {
$('a').live('click', function() {
var href = $(this).attr('href');
if (href.match(/^(https?:\/\/|www\\.)/i))
{
this.href = 'http://www.oursite.php?to=' + href;
}
return this.href;
});
});
If changing your links is not viable, i.e. you need to rewrite links that is inside a database or similar, I would look into using DOMDocument -- it's generally good practice to avoid messy regexes when dealing with complex structures such as HTML
$doc = new DOMDocument('1.0', 'UTF-8');
$doc->loadHTML($text);
$anchors = $doc->getElementsByTagName('a');
foreach($anchors as $a) {
$href = $a->getAttribute('href');
if (preg_match('|^(https?://|www\.)', $href))
{
$a->setAttribute('href', 'http://www.oursite.php?to=' . $href);
}
}
$newHTML = $doc->saveHTML();
So there are three options here:
Go through every part on your site that outputs links to external sites, and re-write them through a build_link function
Rewrite using the help of DOMDocument
Use Javascript
I would have gone with using PHP to let the content of the page run through a filter that uses regex to replace the links.
Using javascript would mean that paople can turn it off. PHP ensures that all links get replaced correctly.
Just remember to make sure that any internal links (like navigation) is left untouched.
There are many types of regex that finds urls and you have to choose one that suits your needs
Edit: I would use this regex (https?://([-\w\.]+)+(:\d+)?(/([\w/_\.]*(\?\S+)?)?)?)