Consider this:
<img style="INFO" alt="INFO" src="INFO" target="INFO" onmouseout="INFO" />
How can I target every attribute (style, alt, src etc.) within the IMG tag to validate it against a white-list?
You should use a DOM parser for that. Depending on what language you are using there are different library that you can use for that.
Related
how do you select a single attribute within the element
<img src="xyz.jpg" title="xyz" alt="xyz">
just need the img src
seems to be an overlooked question
as all assumed implementations yield the entire tag still
Assuming your element is actually something like
<img src="xyz.jpg" title="xyz" alt="xyz">yo!</img>
the xpath expression
//img/#src
Should get you xyz.jpg.
I am retrieving text which contains images saved in WYSIWYG editor(Summernote). Is there a way to replace src attribute value in img tags using asset()?
Example:
<img src="images/image.jpg"/>...
To:
<img src="https://.../images.jpg"/>
I want solution which would cover all bases: spaces in image name, different extensions...
Sure, just use the curly brace syntax in your blade to render the asset()
<img src="{{ asset('whatever_you_want') }}"/>
I don't think you can do it in Blade. You could, in your model, add a function that replaces all images to full paths. This could be done through a regex pattern that looks for URLs in tags.
I would, however, make sure the full path to the image is included in the text in the database. This way, you always have access to the right path to the image, and you're not relying on a piece of code to display the right image.
I want to transform an XML document to HTML using XSL, tinker with it a little, then render it out. This is essentially what I'm doing:
source = Nokogiri::XML(File.read 'source.xml')
xsl = Nokogiri::XSLT(File.read 'transform.xsl')
transformed = xsl.transform(source)
html = Nokogiri::HTML(transformed.to_html)
html.title = 'Something computed'
Stylesheet::transform always returns XML::Document, but I need a HTML::Document instance to use methods like title=.
The code above works, but exporting and re-parsing as HTML is just awful. Since the target is a subclass of the source, there must be a more effective way to perform the conversion.
How can I clean up this mess?
As a side question, Nokogiri has generally underwhelmed me with its handling of doctypes, unawareness of <meta charset= etc... does anyone know of a less auto-magic library with similar capabilities?
Many thanks ;)
HTML::Document extends XML::Document, but the individual nodes in a HTML document are just plain XML::Nodes, i.e. there aren’t any HTML::Nodes. This suggests a way of converting an XML document to HTML by creating a new empty HTML::Document and setting its root to that of the XML document:
html = Nokogiri::HTML::Document.new
html.root= transformed.root
The new document has the HTML methods like title= and meta_encoding= available, and when serializing it creates a HTML document rather than HTML: adds a HTML doctype, correctly uses empty tags like <br>, displays minimized attributes where appropriate (e.g. <input type="checkbox" selected>) and doesn’t escape things like > in <script> blocks.
Actually the question is in the subj...
Is it possible to make handlebars template framework, to recognize templates within a div tag and not in script tag?
For example I would like to create template with this markup:
<style>
div.text-x-handlebars {display:none;}
</style>
<div class="text-x-handlebars-template">
<h2>I'm template</h2>
<p>{{welcomeMessage}}</p>
</div>
Yes you can put your templates in <div>s rather than <script>s, for example:
http://jsfiddle.net/ambiguous/RucqP/
However, doing so is fraught with danger. If you put your template inside a <div> then the browser will interpret it as HTML before you've filled it in; so, if your template's HTML isn't valid until after it has been filled in, the browser may attempt to correct it and make a mess of things. Also, if you have id attributes in your templates, then you will end up with duplicate ids (one in the template <div> and a repeat in the filled in template that you put in the DOM) and that will cause all sorts of strange and interesting bugs. The browser will also try to download any images inside the templates in a <div>, this may or may not be a problem (if might even be desirable but probably not desirable if the image uses a template variable in its src attribute).
Basically, you can do it but you shouldn't, you should put your templates in <script id="..." type="text/x-handlebars-template"> elements instead.
Is there a way to send only an Image with a link and some alt text for each item in an RSS feed?
I looked at the enclosure tag but this is only for videos and music.
The enclosure element can be used to transmit pictures. The RSS 2.0 spec is quite clear about that, saying that the type is a MIME type. It does not say it is restricted to audio or video.
Here's an example: a set of photo feeds from Agence France Presse
One of solutions is to use CDATA in description
<![CDATA[
Image inside RSS
<img src="http://example.com/img/smiley.gif" alt="Smiley face">
]>
Note, that you may have a problem with hotlink prevented site.
This is possible in RRS2,
see
http://cyber.law.harvard.edu/rss/rss.html#ltenclosuregtSubelementOfLtitemgt
So you have to use the enclosure tag, to add media
You should use the enclosure tag within item to include the image. You can use it for images by setting the correct Mime Type (for example: image/jpeg) and including the image size as the "length" attribute. The length attribute doesn't need to be completely accurate but it's required for the RSS to be considered valid.
Here's a helpful article that discusses this and other options.
To work with the Mailchimp RSS to email feature, they expect the image to be specified in a <media:content> element inside <item>. This is their source for the feed item's image macro in their templates.
Thus, you need to add to the declarations
xmlns:media="http://search.yahoo.com/mrss/
Then inside the <item> element add
<media:content medium="image" url="http://whatever/foo.jpg" width="300" height="201" />
Without the extra declaration, the feed is invalid since media:content is not a known element.
Inside tag ITEM
<image:image xmlns:image="http://web.resource.org/rss/1.0/modules/image/">
http://domain. com/image.jpg
< /image:image>
Inside Description Tag
<![CDATA[
Some Text..
<br/><img src='http://domain. com/image.jpg' ><br/>
More Text
]]>
Regarding the <p> tag issue, You need to encode html within the xml.
Your code would look something like this:
<description><p> Text in the tag </p></description>
Since you are using php you can use htmlentities() to encode the html tags. They look horrible in the xml but RSS readers know what to do with it.
http://php.net/manual/en/function.htmlentities.php