Product reference field causes $title to be empty

Question

Update: After removing fields one by one, I've discovered that the Product reference field caused $title to be empty.

I have several content types which are displaying both the <title> and $title well, but in my "Product Display" content type (of commerce kickstart) I find that the $title header is missing, although the <title> tag is there, i.e. the title bar of my browser is displaying the page title correctly. The contents of <title> and $title are similar. Excep that <title> has the site name added to the end of the node title.

I've viewed page source it shows that h1 isn't printed. I've never written any code to hide any h1 tags. I'm using Display suite on that page and I've disabled it on that content type and it didn't help. I am not using Context on that page. Please advise me on how I should proceed, thanks!

Update: Devel->load shows that the title is set correctly, but when I created a template for that node (page--node--42.tpl.php), and tested if it worked by hiding the header and footer, I added this line of code

<h1 class="page--title title" id="page-title"><?php print $title; ?></h1>

but all I got is am empty $title

Update 2: I've inserted a block using [current-page:title] and it works, however I'd prefer not to stick with this duct-tape solution if possible

Answer 1

Check the content types display tab. It may be set to hide the title.

Answer 2

Product Reference module pulls fields from the product entity to your product display (node), this naming has been simplified in Commerce Kicsktart and you can find the product displays as simply products and your products as product variations, more on this here: product vs product type vs product display in drupal commerce

So in your kickstart installation, the product title is coming from the product entity, if you go to admin/commerce/config/product-variation-types you'll see all your product types and then you can configure your field for each view mode to control the title display.

Hope this is what's troubling you.

Answer 3

After 5 to 6 hours of searching for the answer with Emko, we found that commenting out line 67 to 76 of this module fixed the problem.

profiles\commerce_kickstart\modules\commerce_kickstart\commerce_kickstart_product_ui
\commerce_kickstart_product_ui.module


/**
* Override or insert variables into the page template.
*/
function commerce_kickstart_product_ui_preprocess_page(&$vars) {
$product_display_types = commerce_product_reference_node_types();
if (isset($vars['node']->type) && isset($product_display_types[$vars['node']->type])) {
$vars['title'] = "";
}
}