How to obtain "parent-title/child-title" URL path for child nodes

You will probably have to add a custom token through some coding.
Moving the issue to the Pathauto issue queue, they might have a better idea.

I think I have the same problem.

I have an Entity Reference field that uses Inline Entity Form. The field is for an image gallery, and I want my URL to be something like /type_from_referencing_node/productname_from_referencing_node/imagename, but I'm unable to achieve this. When I look at the image gallery field tokens for PathAuto I get "Nodes with delta 1", "Nodes with delta 2", etc. In each of these delta rows I do have all of the related fields, but none actually generates a token value.

I had to create a custom path for this, which was pretty easy really. My code, FWIW:

function hook_token_info() {
    $info['tokens']['node']['machine_name_of_your_path'] = array(
        'name' => t('Friendly Name Of Your Path'),
        'description' => t('...description...'),
    );
    return $info;
}


function hook_tokens($type, $tokens, array $data = array(), array $options = array()) {
    $replacements = array();
    $sanitize = !empty($options['sanitize']);
    $path = '';

    if ($type == 'node' && !empty($data['node'])) {
        $node = $data['node'];

        foreach ($tokens as $name => $original) {
            switch ($name) {
                case 'machine_name_of_your_path':
                  
                    $path = [put your path string here!!! - will probably require an entityfieldquery to get what you want.];
                  
                    $replacements[$original] = str_replace(
                        array('&', '&'),
                        'and',
                        $sanitize ? filter_xss($path) : $path
                    );
                                      
                    break;
            }
        }
    }

    return $replacements;
}

Hey MXT, unfortunately the requirements changed and I'm not actually using the code I sent before, so it's not too easy for me to test. But, if I remember correctly, I didn't have the problem you mention.

I have commented my code a bit more, because it might be confusing. My IEF is related to nodes, not 'generic' entities.

function hook_token_info() {
    $info['tokens']['node']['machine_name_of_your_path'] = array(
        'name' => t('Friendly Name Of Your Path'),
        'description' => t('...description...'),
    );
    return $info;
}


function hook_tokens($type, $tokens, array $data = array(), array $options = array()) {
    $replacements = array();
    $sanitize = !empty($options['sanitize']);
    $path = '';

    // If your IEF contains non-node entities, then you want to change this conditional to target your IEF base/type
    if ($type == 'node' && !empty($data['node'])) {
      
        //This is the IEF object (in my case, a node)
        $node = $data['node'];

        foreach ($tokens as $name => $original) {
            switch ($name) {
                case 'machine_name_of_your_path':
                  
                    //Find parent node of the IEF node
                    $query = new EntityFieldQuery;
                    $result = $query->entityCondition('entity_type', 'node')
                      ->entityCondition('bundle', array('product'))
                      ->fieldCondition('field_image_gallery', 'target_id', $node->nid) //'field_image_gallery' is my IEF field. I only have one parent per IEF item, so I know if I get a result, it will be right parent.
                      ->range(0,1)
                      ->execute();

                    if (!empty($result)){
                      $product = node_load(key($result['node'])); //This is my parent node, the one that contains the IEF field 'field_image_gallery'
                      $path = drupal_get_path_alias($path = 'node/' . $product->nid); //Now, I grab the aliased path of the parent node, which I will save as the token. I can then combine this aliased path with my IEF node title to get something like /products/product/[gallery/title], where the brackets are the IEF object's path tokens. Note: You combine this custom token and the existing tokens using the admin/config/search/path/patterns administration area, not in code.
                    }
                  
                    $replacements[$original] = str_replace(
                        array('&', '&'),
                        'and',
                        $sanitize ? filter_xss($path) : $path
                    );
                                      
                    break;
                    
            }
        }
    }

    return $replacements;
}

@MXT: gotcha. Post back what you find if you don't mind!

FYI, I did this with a customizable module of my own,
I've just put it up as a sandbox for reference, though i know the docs need some work, and edge cases probably abound.

https://drupal.org/sandbox/dman/2209055

This module
* provides new tokens to use with pathauto
* allowing you access to "the entity that refers to this one through entity_reference (via a named field)"

I have a number of publication issues - that link to publication 'articles' using inline_entity_form to allow an editor to do the whole thing from the top.

The pattern for my 'article' content type

[node:incoming_references:field_pi_articles:0:url:path]/[node:title]

Which translates to:
* when making a path for an article
* find the url path of
* the first (0th) entity that links to me
* by way of the field_pi_articles entityreference.

In this way, my articles are all given URLs derived from their parent/owner node.

THERE IS a race condition if you try to create all these nodes at once, as the children require the parent to have been given a valid URL before they save (observed above), and inline_entity_form may not always ensure that. But in general, this token that helps you build an URL based on incoming references is what I needed at that time.

I actually added a 'rule' to take care of the rest, including 'if parent is unpublished, all children are unpublished' and vice-versa. And one for 'if the parent path changes, update all child paths' But that was pure 'rules' only IIRC.

Thank you dman for the sandbox code... saved me a lot of time.

Thanks,
kcolwell

I also thank dman for his sandbox code, it works great. My use case was to create a pattern for path aliases. I have node type A that uses inline entity form to reference nodes of node type B. For a node of node type B, I want the url to be path-to-referencing-node-a/title-of-b.

It is hard to believe that this context is not available by default. It really should be. Using dman's code, I was able to use context [node:incoming_references:field_referencingfield:0:url:path]/[node:title] as a pattern which is exactly what I was looking for.

It would be nice if drupal.org had a point system for comments so I could +1 dman's comment here.

I hope somehow this context makes it into a next version of Inline Entity Form, or probably better the entityreference module.

For dman's module also see #2402011: Merge with entityreference_backreference, for further development also #2402027: Add formatter & widget to be used with IEF.

People here might interest #2401313: List comprehension tokens like ref:all:nid

None of the solutions above were working well for me without saving twice. It seems pathauto was not updating the path until after the hooks. I expanded on MXT's idea and just created the path myself using path_save.

function mymodule_node_insert($node) {
  if(!empty($node->field_sections['und'])) {
    module_load_include('inc', 'pathauto');
    foreach($node->field_sections['und'] as $section_id) {
      $section = node_load($section_id['target_id']);
      $path = array(
        'source' => 'node/' . $section->nid,
        'alias' => pathauto_cleanstring($node->title) . '/' . pathauto_cleanstring($section->title),
      );
      path_save($path);
    }  
  }  
}

function mymodule_node_update($node) {
  if(!empty($node->field_sections['und'])) {
    module_load_include('inc', 'pathauto');
    foreach($node->field_sections['und'] as $section_id) {
      $section = node_load($section_id['target_id']);
      $path = array(
        'source' => 'node/' . $section->nid,
        'alias' => pathauto_cleanstring($node->title) . '/' . pathauto_cleanstring($section->title),
      );
      $current = path_load('node/'. $section->nid);
      if($current) {
        $path['pid'] = $current['pid'];
      }
      path_save($path);
    }  
  }  
}

Solution provided by @jphelan (#15) works good for me.

HI,

I try for drupal 8, but I can't adapt the code! i obtain http ajax error 200...

My hierarchy is:

site (ief field: field_secteur) --> secteur (ief fields: field_voie_1_l and field_voie_x_l)

I would like to get some url like that:

mydomain.com/site-name/secteur-name/voie-1-l-name

/**
 * Implements hook_token_info().
 */
function ief_parent_token_token_info() {
  $info = [];
  $info['tokens']['node']['ief_parent_path'][] = 'A token to extract desired characters from Node body to be used in meta descriptions';
  return $info;
}


/**
 * Implements hook_tokens().
 */
function  ief_parent_token_tokens($type, $tokens, array $data, array $options, \Drupal\Core\Render\BubbleableMetadata $bubbleable_metadata) {
  $replacements = [];
  if ($type == 'node' && !empty($data['node'])) {
  	 $node = $data['node'];

    foreach ($tokens as $name => $original) {
      // Find the desired token by name.
      switch ($name) {
        case 'ief_parent_path':
			//Find parent node of the IEF node
            $query = new EntityFieldQuery;
            $result = $query->entityCondition('entity_type', 'node')
            ->entityCondition('bundle', array('product'))
            ->fieldCondition('field_secteurs', 'target_id', $node->nid) //'field_secteurs' is my IEF field. I only have one parent per IEF item, so I know if I get a result, it will be right parent.
            ->range(0,1)
            ->execute();

            if (!empty($result)){
            $product = node_load(key($result['node'])); //This is my parent node, the one that contains the IEF field 'field_secteur'
            $path = drupal_get_path_alias($path = 'node/' . $product->nid); //Now, I grab the aliased path of the parent node, which I will save as the token. I can then combine this aliased path with my IEF node title to get something like /products/product/[gallery/title], where the brackets are the IEF object's path tokens. Note: You combine this custom token and the existing tokens using the admin/config/search/path/patterns administration area, not in code.
            }
                  
            $replacements[$original] = ief_parent_path_value(
            array('&', '&'),'and', $sanitize ? filter_xss($path) : $path);

          break;
      }
    }
  }
  return $replacements;
}

help me please..

The original question was answered. The same question for D8 was also asked in #2979710: How to obtain "parent-title/child-title" URL path for child nodes for D8 and answered there. Closing.