Answers.Body: <p>First you'll want 3 templates — I'll call them 'news/index.html', 'news/_entry.html', and 'news/_extra.html'. (fyi... using an underscore before the template name is good practice as it prevents the template from being loaded directly; which would likely throw an error because no entry would be defined.)</p>
  
  <p>You'll then want to create a custom route to the 'extra' page in settings, using the 'slug' token for one of the segments.</p>
  
  <ul>
  <li>If your url looks like this: news/slug/extra (where 'slug' is the slug token)</li>
  <li>Load this template: news/_extra.html</li>
  </ul>
  
  <p>In the '_entry.html' template, you'll want to check your 'additional' field and create a link to your '/extra' page. Note: 'entry.url' should already include the 'news/slug' portion of the uri — we'll just be adding the '/extra' segment.</p>
  
  <pre><code>{% if entry.additional %}
      &lt;a href="{{ entry.url ~ '/extra' }}"&gt;extra page&lt;/a&gt;
  {% endif %}
  </code></pre>
  
  <p>In the '_extra.html' template, there should now be a 'slug' variable available to your entry.</p>
  
  <pre><code>{% set newsEntry = craft.entry.section('news').slug(slug) %}
  {% set newsIndex = craft.entry.section('pages').slug('news') %}
  {{ newsIndex.title }} — {{ newsEntry.title }}
  </code></pre>
  
  <p>Note: I don't know in what section your 'news' index page is. I just picked something at random — you'll need to change that to match your structure.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-05-01T01:55:01.050Z
Answers.Text: To clarify your final note, the news index page in this example would belong to news. In relation to the actual template folder structure what I have is as follows: root = news.html then a folder called News with two templates inside called news_entry.html and news_extra.html – So in your example you use news/index.html, when it should be news.html – Did this match your understanding? Thank you for your answer and for pointing me in the right direction on this.
Answers.UserDisplayName: Craftnoob
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-05-01T02:50:02.740Z
Answers.Text: Yes. You can change the templates/paths to anything you want. I just used those as an example. I would still recommend placing an underscore in front of any templates that rely on an entry being defined however (i.e. '_news_entry.html' and '_news_extra.html').
Answers.UserDisplayName: Douglas McDonald
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-05-01T04:08:01.120Z
Answers.Text: I have renamed the last segment of Craft code as follows: {% set newsEntry = craft.entry.section('news').slug(slug) %}
  {% set newsIndex = craft.entry.section('news').slug('news') %}
  {{ newsIndex.title }} — {{ newsEntry.title }} - I am not sure where exactly to put this, and know that it is why {{ entry.newsExtra }} isn't loading in any information on the _extra.html page. The url which the user clicks on to see the extra page reads _extra.html - does this have to be the case, can it be made prettier without underscores while also taking your advice at the template side?
Answers.UserDisplayName: Craftnoob
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-05-01T06:27:18.223Z
Answers.Text: The {{ newIndex.title}} and {{ newsEntry.title}} are just an example to show you that you can access those entries as needed from your '_extras.html' template. Change to whatever you need. As far as the uri is concerned—you shouldn't have '_extra' in the uri, only in the route template definition. The uri should be 'news/{slug}/extra' where slug is the title of your news entry.
Answers.UserDisplayName: Douglas McDonald
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-04-29T09:49:25.213Z
Answers.LastActivityDate: 2015-04-29T09:49:25.213Z
Answers.UserDisplayName: Douglas McDonald
Body: <p>I have a section where each item has its own URL e.g:
  news/{slug}</p>
  
  <p>The Entry Template for this section is:
  news/news_detail</p>
  
  <p>For each post I would like to have a link to a unique page which is populated with information from the fields from the parent post/group, e.g news.</p>
  
  <p>The slug would look something like:
  news/{slug}/extra</p>
  
  <p>The Entry Template for the news_detail page has a rich text field:
  additional</p>
  
  <p>To make this more complicated, the link to this page will be visible only if the "additional" field is populated with data.
  And finally each "extra" page should have a link back to the originating post.</p>
  
  <p>I had considered using a simple JavaScript toggle, but having urls for the content is more important in this instance, so not an option.</p>
  
  <p>Thank you for any pointers as I am not sure where to start.</p>
  
Tags: <templating><entries><field><slug>
Title: How to create an auxiliary page with sub url?
ThreadText: # How to create an auxiliary page with sub url?
  
  (Asked by: username_0 on 2015-04-29)
  
  I have a section where each item has its own URL e.g:
  news/{slug}
  
  The Entry Template for this section is:
  news/news\_detail
  
  For each post I would like to have a link to a unique page which is populated with information from the fields from the parent post/group, e.g news.
  
  The slug would look something like:
  news/{slug}/extra
  
  The Entry Template for the news\_detail page has a rich text field:
  additional
  
  To make this more complicated, the link to this page will be visible only if the "additional" field is populated with data.
  And finally each "extra" page should have a link back to the originating post.
  
  I had considered using a simple JavaScript toggle, but having urls for the content is more important in this instance, so not an option.
  
  Thank you for any pointers as I am not sure where to start.
  
  **Tags:** templating, entries, field, slug
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-04-29. Score: 2
  
  First you'll want 3 templates — I'll call them 'news/index.html', 'news/\_entry.html', and 'news/\_extra.html'. (fyi... using an underscore before the template name is good practice as it prevents the template from being loaded directly; which would likely throw an error because no entry would be defined.)
  
  You'll then want to create a custom route to the 'extra' page in settings, using the 'slug' token for one of the segments.
  
  * If your url looks like this: news/slug/extra (where 'slug' is the slug token)
  * Load this template: news/\_extra.html
  
  In the '\_entry.html' template, you'll want to check your 'additional' field and create a link to your '/extra' page. Note: 'entry.url' should already include the 'news/slug' portion of the uri — we'll just be adding the '/extra' segment.
  
  ```
  {% if entry.additional %}
      <a href="{{ entry.url ~ '/extra' }}">extra page</a>
  {% endif %}
  
  ```
  
  In the '\_extra.html' template, there should now be a 'slug' variable available to your entry.
  
  ```
  {% set newsEntry = craft.entry.section('news').slug(slug) %}
  {% set newsIndex = craft.entry.section('pages').slug('news') %}
  {{ newsIndex.title }} — {{ newsEntry.title }}
  
  ```
  
  Note: I don't know in what section your 'news' index page is. I just picked something at random — you'll need to change that to match your structure.
  
  > **Comments:**
  > **username_0**: To clarify your final note, the news index page in this example would belong to news. In relation to the actual template folder structure what I have is as follows: root = news.html then a folder called News with two templates inside called news_entry.html and news_extra.html – So in your example you use news/index.html, when it should be news.html – Did this match your understanding? Thank you for your answer and for pointing me in the right direction on this.  
  > **username_1**: Yes. You can change the templates/paths to anything you want. I just used those as an example. I would still recommend placing an underscore in front of any templates that rely on an entry being defined however (i.e. '_news_entry.html' and '_news_extra.html').  
  > **username_0**: I have renamed the last segment of Craft code as follows: {% set newsEntry = craft.entry.section('news').slug(slug) %} {% set newsIndex = craft.entry.section('news').slug('news') %} {{ newsIndex.title }} — {{ newsEntry.title }} - I am not sure where exactly to put this, and know that it is why {{ entry.newsExtra }} isn't loading in any information on the _extra.html page. The url which the user clicks on to see the extra page reads _extra.html - does this have to be the case, can it be made prettier without underscores while also taking your advice at the template side?  
  > **username_1**: The {{ newIndex.title}} and {{ newsEntry.title}} are just an example to show you that you can access those entries as needed from your '_extras.html' template. Change to whatever you need. As far as the uri is concerned—you shouldn't have '_extra' in the uri, only in the route template definition. The uri should be 'news/{slug}/extra' where slug is the title of your news entry.  
  
  ---
  
  