Enlive - Wrap tags around HTML from file

Question

Enlive - Wrap tags around HTML from file

218 Views Asked by deadghost At 16 April 2025 at 07:49

So I have the following HTML in logout.html:

<form id="log_out" name="log_out" action="/log_out" method="post">
  <input type="submit"
         value="Log Out!">
  </input>
</form>

It looks like I need some function to read logout.html as enlive nodes (At least I think wrap takes nodes; I'm not actually sure).

(html/defsnippet nav "templates/nav.html" [:ul]
      []
      [:ul] (html/append
                  (html/wrap :li (html/SOME-FUNCTION-IDK "templates/logout.html"))))

Original Q&A

There are 2 best solutions below

overthink On 28 January 2014 at 03:32

Not sure if this is the best way, but you could define the contents of logout.html as an enlive snippet. A snippet is like a template, but returns nodes, and can also selectively grab parts of the file given a selector (in the example below, the selector is :#log_out, meaning the form element with id="log_out").

(html/defsnippet logout-form "templates/logout.html" [:#log_out] 
  [])

Then something like:

(html/defsnippet nav "templates/nav.html" [:ul]
  []
  [:ul] (html/append
          ((html/wrap :li) (logout-form))))) ;; untested! ymmv

**deadghost** · Accepted Answer

I ended up having to modify overthink's answer to get it working.

(defn extract-body
  "Enlive uses TagSoup to parse HTML. Because it assumes that it's dealing with
   something potentially toxic, and tries to detoxify it, it adds <head> and
   <body> tags around any HTML you give it. So the DOM returned by html-resource
   has these extra tags which end up wrapping the content in the middle of our
   webpage. We need to strip these extra tags out."
  [html]
  (html/at html [#{:html :body}] html/unwrap))

(html/defsnippet logout "templates/logout.html" [html/root] [])

How wrap works is it wraps selected elements in a given tag. So in this case, #log_out is selected and is wrapped with the li tag.

(html/defsnippet nav "templates/nav.html" [html/root]
      []
      [:ul] (html/append (extract-body (logout)))
      [:#log_out] (html/wrap :li))

It's definitely not as clean as I'd like, but it works.

Enlive - Wrap tags around HTML from file

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