What would be the proper procedure for accessing the current page html data and picking up all of a certain tag and throwing them into the sidebar as links?
I'm not sure your proficiency with php, but I'll give you and overview of what you'd probably want to do.
First, you need the HTML. I'm assuming you're running this on a page (in a page.php file or single.php file, or similar), this means that you have access to the global variable $post, which contains the html of the page in it. To access it you can use the helper function get_the_content(), this returns the html being displayed.
Next you need to parse through this to get the h2 tags. A simple regex can handle this, something like <h2[^>]*>(.*)</h2>. It's important to remember that this regex is very picky, so format your html correctly, no multiline h2s.
So now you have the html, and have parsed it with a regex to get the h2s. Now you need to generate the list from the results, and prepend it to the top of the content of the page. There are a ton of ways to do this, the easiest being just running the code in the right spot in the template file.
Of course there are probably better ways of doing this, I'd recommend you look at say a FAQ plugin (if that's what this is for), or do the lists manually (as this system can be broken), or possibly use a custom post type; but for your question, that's how I'd do it.
Related
I have a multiline textbox, need to restrict users from adding html input, any other scripts, copy pasting from word or any other word processer.
But I need to allow bullets for the input.
I thought it would be a simple thing to do since it looks like a common problem.
But I could not find a good solution in the web, please help.
I am using telerik tool kit as well.
If you need to strip out HTML then HTML Agility Pack is your friend. It will deal with all manner of malformed html. As a bonus it is included in Sitecore already.
If you want to use something with a friendlier syntax then consider CSQuery or Fizzler both of which provide you with a jQuery type syntax from within C#.
If you need to build a whitelist then take a look at this post on how to add whitelist:
public void RemoveNotInWhiteList(HtmlNode pNode, IEnumerable<string> pWhiteList)
{
if (!pWhiteList.Contains(pNode.Name))
{
pNode.Remove();
return;
}
pNode.Attributes
.Where(att => !pWhiteList.Contains(att.Name))
.ToList()
.ForEach(att => att.Remove());
pNode.ChildNodes
.ToList()
.ForEach(att => RemoveNotInWhiteList(att, pWhiteList));
}
You could create a Validation rule, I reckon (in /sitecore/System/Settings/Validation Rules). Put the allowed HTML in a whitelist somewhere (possibly a Sitecore item), when validating run through that whitelist. If any other HTML tags appear in it, make it invalid.
This doesn't stop them from putting it in, but it will stop the item from being published.
You could even create a custom item:saved event handler which strips out all HTML tags apart from the whitelisted stuff. Again, it doesn't stop them from putting the HTML tags in, but as soon as the item is saved it will be removed. Going even a step further than this, I think it also would be possible to use the Rules Engine for this - this article by John West shows how to use the Rules engine to modify item names, but you could modify it to read out specific text boxes.
Neither option here will stop users from inputting HTML, but the HTML tags will automatically be removed when the item is saved.
I use Wordpress as tool for publicizing big chunks of static text (as pages ...) and I would like to have Table of Content, auto-generated based on HTML headings h1,h2,h3...
How can I do that?
I dont know any plugins that does the job, maybe there are. But a plugin that would does that would need to parse the current post (using database/on page request), get only the headings(using parser like regex) and use them as a menu (write the results as a html list of ul li). Another addition would be to cache the result according to the page revision but it's your choice.
I haven't quite the right process to change the body classes based on the page being viewed.
I have about 20 or so pages within a subsection that all have a different background color and reversed nav links from the main site.
I can't figure out if there is some kind of preprocess function to use (and which) in template.php or if I should do something specifically in the certain xx-page.tpl.php file.
Just adding an ID to the body tag in the xx-page.tpl.php isn't reliable due to browser caching.
I've seen this snippet:
if (drupal_is_front_page()) {
$vars['body_class'] .= ' home';
}
however, "is it the front or not" isn't enough because it's also not just a page, it's a specific page but I've either missed the syntax or am doing something wrong.
Is this a case where I need to create a custom function and if so, is the template.php page where it goes?
also, I'm in Drupal 6.26
Thanks
Are you looking for this function?
http://api.drupal.org/api/drupal/includes!theme.inc/function/template_preprocess_page/6
You might also want to have a look at the Context module.
I need the node titles to be able to display some text formatting.
As far as I understand, Drupal's title field is just plain text, it doesn't allow HTML or any other input format. Is that true? Is there a way to override this, or another solution?
I am working with Drupal 6.
You can pretty easily do this in your theme, there are different ways to do with. The simplest would probably to do it in your template.php
/* this function generates the variables that are available in your node.tpl,
* you should already have this in your template.php, but if not create it
*/
function mytheme_preprocess_node(&$vars) {
// It's important to run some kind of filter on the title so users can't
// use fx script tags to inject js or do nasty things.
$vars['title'] = filter_xss($vars['node']->title);
}
What happens in the function is that it overwrites the default value for $title in the node.tpl which holds the variable used for the title. It is usually placed within a h1 or h2 tag, so you should be aware of that. The filter_xss is used to only allow basic html tags, so protect the site, you can look at that function here. That are some other filter functions, like check_markup, and filter_xss_admin, but you can give a second param for filter_xss which is an array of allowed tags, so should the default not be good enough, you can just change it to fit your needs.
Use function mytheme_preprocess_page for D7.
Extending the module mentioned by wiifm, for D7 there is now also: https://drupal.org/project/html_title_trash
It allows more tags and also works for block titles, rather than just node titles.
I have a legacy application that I needed to implement a configuration page for to change text colors, fonts, etc.
This applications output is also replicated with a PHP web application, where the fonts, colors, etc. are configured in a style sheet.
I've not worked with CSS previously.
Is there a programatic way to modify the CSS and save it without resorting to string parsing or regex?
The application is VB6, but I could write a .net tool that would do the css manipulation if that was the only way.
You don't need to edit the existing one. You could have a new one that overrides the other -- you include this one after the other in your HTML. That's what the "Cascading" means.
It looks like someone's already done a VB.NET CSS parser which is F/OSS, so you could probably adapt it to your needs if you're comfortable with the license.
http://vbcssparser.sourceforge.net/
One hack is to create a PHP script that all output is passed through, which then replaces certain parts of CSS with configurable alternatives. If you use .htaccess you can make all output go through the script.
the best way i can think of solving this problem is creating an application that will get some values ( through the URL query ) and generate the appropriate css output based on a css templates
Check this out, it uses ASP.NET and C#.
In my work with the IE control (shadocvw.dll), it has an interesting ability to let you easily manage the CSS of a page and show the effects of modified CSS on a page in realtime. I've never dealt with the details of such implementations myself, but I recommend that as a possible solution worth looking at. Seeing as pretty much everyone is on IE 6 or later nowadays, you can skip the explanations about handling those who only have IE 5,4,3 or 2 installed.
Maybe the problem's solution, which is most simple for the programmer and a user is to edit css via html form, maybe. I suppose, to create css-file, which would be "default" or "standart" for this application, and just to read it, for example, by perl script, edit in html and to write it down. Here is just the simple example.
In css-file we have string like:
border-color: #008a77;
we have to to read this string, split it up, and send to a file, which will write it down. Get something like this in Perl:
tr/ / /s;
($vari, $value) = split(/:/, _$);
# # While you read file, you can just at the time to put this into html form
echo($vari.":<input type = text name = ".$vari." value = ".$value.">");
And here it is, you've got just simple html-form-data, you just shoul overwrite your css-file with new data like this:
...
print $vari[i].": ".$value.";\n";
...
and voila - you've got programmatical way of changing css. Ofcourse, you have to make it more universal, and more close to your particular problem.
Depending on how technically oriented your CSS editors are going to be, you could do it very simply by loading the whole thing up into a TextEdit field to let them edit it - then write it back to the file.
Parsing and creating an interface for all the possibilities of CSS would be an astronomical pain. :-)