html - Find the first ancestor node with X attribute using XPath -

i have duplicate nested structures in dom , trying find input elements @ current node level.

for example, current node <div data-model="user" data-id="1">. how the <input value=foo without getting <input value=bar (since it's under it's own data-model)?

<div>     <div data-model="user" data-id="1">         <div>             <input data-field="email" value="foo">              <div data-model="user" data-id="2">                 <div>                     <input data-field="email" value="bar">                 </div>             </div>         </div>     </div> </div> 

here have in xpath far:

//*[@data-model="user"]//*[@data-field , ancestor::*[@data-model="user" ....]] 

you in 2 steps. first evaluate

count(ancestor-or-self::div[@data-model = 'user']) 

as number, current div context node. take number $n , evaluate

.//input[count(ancestor::div[@data-model = 'user']) = $n] 

the idea here find descendant input elements have same number of containing data-model="user" divs context node started (inclusive).

from xslt in single pass because have access current() function lets "escape" predicate

.//input[count(ancestor::div[@data-model = 'user']) =    count(current()/ancestor-or-self::div[@data-model = 'user'])] 

this function isn't available in pure xpath if library lets pass variable bindings expressions provide context node in variable , use in place of current().