iframes in Wordpress

问题:

I am trying to generate some embeddable iframe code so a user can include the code on a blog to display content I'm planning to deliver. Right now the content I'm trying to deliver is just a website. I am trying to use the following code on a Wordpress blog:

<iframe width="420" height="315" src="http://www.cnn.com" frameborder="0"></iframe>

However when the page is viewed Wordpress simply outputs a link for "http://www.cnn.com" based on the following html.

<a href="http://www.cnn.com">http://www.cnn.com</a>

That said, if I use Youtube generated iframe code, the iframe loads fine. For example:

<iframe width="420" height="315" src="http://www.youtube.com/embed/_OBlgSz8sSM" frameborder="0" allowfullscreen></iframe>

results in:

<iframe class='youtube-player' type='text/html' width='420' height='315' src='http://www.youtube.com/embed/_OBlgSz8sSM?version=3&#038;rel=1&#038;fs=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;wmode=transparent' frameborder='0'></iframe>

Any idea what Youtube is doing to enable this functionality or more generally how to get my simply iframe to work.

回答1:

I don't know why you get an anchor instead of the iframe, but I know that google don't want their homepage in iframes. If you would have an iframe with the src http://www.google.com, you would see an empty iframe. Also see this example.

=== UPDATE ===

Wordpress prohibits iframes with few exceptions. Probably you can handle it with shortcodes. Try adding following untested code into the functions.php in your theme.

// [iframe src="www.cnn.com"]
function iframe_func($atts) {
    extract(shortcode_atts(array(
        'src' => 'default'
    ), $atts));
    return '<iframe src="{$src}"></iframe>';
}
add_shortcode('iframe', 'iframe_func');

Now you can add [iframe src="www.cnn.com"] in the article editor in the wordpress admin.

回答2:

Creating a shortcode is the way I get around this problem. It bypasses the WYSIWYG editor and puts the html in the page.

I would approach it like this.

Add this to your functions.php file:

function add_iframe($atts) {
    extract(shortcode_atts(array(
    'src' => '/'
    ), $atts));
  $theframe = '<iframe src="'.$src.'" width="420" height="315" frameborder="0"></iframe>';
  return $theframe;
}
add_shortcode('iframe', 'add_iframe');

Useage:

Add [iframe src=http://thesiteyouwanttoshow.com] to the content where you want the iframe to show.

回答3:

If you are loading your own web page within the iframe remember that most hosted solutions will have xFrame options set to SAMEORIGIN, so no matter what you change in Wordpress, the page will still not render as it is being blocked by the target website.

I spent hours with this problem so hopefully if you are having this issue you will the target website as well. If you are hosting a solution on rails the answer I found is here and a website that will definitely load in Wordpress can be found here, so feel free to use that endpoint as a test.

回答4:

Google uses the X-Frame-Options header (set to SAMEORIGIN) to prevent you from placing it in an iframe. Getting around this would require the user to use a browser that doesn't support X-Frame-Options.

回答5:

Unfortunately the major search engine sites such as google and yahoo (bing excluded) don't allow for iframe embedding since they offer a plethora of APIs and integration options. So there is really no real way for you to do this. If you are not planning on embedding google as your iframe source then you should be in the clear with the current code that you have in place. Try it out and just change the source to something else - google will not show up in its place. If you want a search engine there unfortunately it is with horror that I say that bing is the only one that works.

Hope this helps!

So in recap - Google does not embed in iframe, but other content that you produce should based on your coding: example:

<iframe width="420" height="315" src="http://www.uncrate.com" frameborder="0"></iframe>

http://jsfiddle.net/pKby8/

The Anchor that you get is a result of the xFrame option. When it connects to the google servers the servers kick back a cute response hinting that you should link to them instead of iframe.

回答6:

I would create a WordPress short_code that would insert your iFrame in the output. I think by adding the iFrame code directly in the post box wordpress is changing it.

http://codex.wordpress.org/Shortcode_API