Created on 24 July, 2015 | Updated on 29 April, 2021
Add Structured Data to Opencart 1.5x & 2x for Google Merchant (JSON-LD & Microdata)

Add Structured Data to Opencart 1.5x & 2x for Google Merchant (JSON-LD)

In this article we will cover in a very simple way how to add the correct structured data for Opencart 1.5x and 2.x using JSON-LD

Opening the correct file

First we will need to locate the correct template file to add the structured data. Open up your FTP or IDE and source the file in the following location.

When you are in the theme folder please select your theme, in this example my theme is uber.

catalog > view > theme > uber > template > product > product.tpl

Before editing always make a copy of the original file for backup purposes. I simple copy it to product.php

Adding the code

OpenCart 1.5x

Once you have opened up product.tpl, the first two lines you should see the following code

<?php echo $header; ?><?php echo $column_left; ?><?php echo $column_right; ?>
<div id="content"><?php echo $content_top; ?>

Paste the below code just under the id element content

<script type="application/ld+json">
{
  "@context": "http://schema.org/",
  "@type": "Product",
  "name": "<?php echo $heading_title; ?>",
    "offers": {
    "@type": "Offer",
    "priceCurrency": "<?php echo $this->currency->getCode();?>",
	"price": "<?php if (!$special) { echo preg_replace('/[^0-9.]+/','',$price);}else{echo preg_replace('/[^0-9.]+/','',$special);} ?>",
	"itemCondition" : "http://schema.org/NewCondition",
	"availability" : "<?php if ($stock >= 1){echo 'In Stock';}else{echo $stock;} ?>"
  }
}
</script>

OpenCart 2.x

The first line you should see

<?php echo $header; ?>

Paste below the header variable paste the below code

<?php foreach ($_SESSION as $key => $value){$currency = $value['currency'];}?>
<script type="application/ld+json">
{
  "@context": "http://schema.org/",
  "@type": "Product",
  "name": "<?php echo $heading_title; ?>",
    "offers": {
    "@type": "Offer",
    "priceCurrency": "<?php echo $currency; ?>",
	"price": "<?php if (!$special) { echo preg_replace('/[^0-9.]+/','',$price);}else{echo preg_replace('/[^0-9.]+/','',$special);} ?>",
	"itemCondition" : "http://schema.org/NewCondition",
	"availability" : "<?php if ($stock >= 1){echo 'In Stock';}else{echo $stock;} ?>"
  }
}
</script>

To add microdate to OpenCart 3x click here

Now save your file and upload. Check a product page to ensure nothing went wrong.

If you have existing schema data then you need to delete the old schema data. If you don’t do this then Google will see two product listings which will result in errors.

Checking The Results

You can use Google’s Structured data testing tool, to check if everything is done correctly. The below image shows an example of a correct listing.

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Çapulcu Emmi
Çapulcu Emmi
3 years ago

Hi Emmanuel,Thank you for the great help. I’m trying your way to microdata for Facebook. But I’m still getting these errors below the screenshot. Any advise for that ?Thanks already. https://uploads.disquscdn.c

CB
CB
3 years ago

I have added the Json-LD but what do I do with the micro data? Thanks

Digiwebin
Digiwebin
3 years ago

I just updated suggested code into my website, but whenever i do a test in Structured Data Testing Tool it return me an Error “The URL timed out. Make sure it is responding in a timely fashion to requests from Google.”

George Kunev
George Kunev
4 years ago

OK. Thanks for all!!!

George Kunev
George Kunev
4 years ago

HI! Added the updated coding – no issues with Google-testing now :)Re price – resolved the issue by changing the decimal symbol to ‘dot’ in catalog/language/mylanguage/mylanguage.phpCan we ‘strech’ a bit by adding image? Also shall Google show this structured data as rich snippet is search results?

George Kunev
George Kunev
4 years ago

Hi again and thanks for quick reply!!! Indeed opencart is 2.1.0.1, sorry. Applied the fix and product pages are OK now. Checking with Google’s structured data testing tool I have mistake for the field ‘name’ – Google requires value for this field.Another minor issue is related with decimal point (I have decimal ‘comma’ and the price was showing 1490 instead of 14,90) – changed a bit the coding (“price” section replaced the ‘dot’ with ‘comma’) and now shows 14,90, but Google warns about this. Obviously need to do it the other way around – to make the site working with ‘dot’, but not with ‘comma’ or it is something related with regional settings.Anyway, I will be thankful for your advice about the field ‘name’.

George Kunev
George Kunev
4 years ago

Hi Emmanuel,I tried it, but I got followin on a product page Warning: Illegal string offset ‘currency’ in /home/podazzp8/public_html/catalog/view/theme/default/template/product/product.tpl on line 2Warning: Illegal string offset ‘currency’ in /home/podazzp8/public_html/catalog/view/theme/default/template/product/product.tpl on line 2Notice: Undefined index: currency in /home/podazzp8/public_html/catalog/view/theme/default/template/product/product.tpl on line 2Warning: Illegal string offset ‘currency’ in /home/podazzp8/public_html/catalog/view/theme/default/template/product/product.tpl on line 2Any advice?Kind regards,Georgi

Жоро Ш. Даскалов
Жоро Ш. Даскалов
4 years ago

I have some problems with both codes for my Opecart 2 website ( https://promocionalnik.bg/ ) – on line 5 (currency) Is there any update of the codes?

Cotswold Tours/Taxis
Cotswold Tours/Taxis
5 years ago

Nice Article.

Peter Vida
Peter Vida
5 years ago

great, working.

Emmanuel Flossie
Reply to  Peter Vida
5 years ago

Pleasure

Svetly
Svetly
5 years ago

It will be good if you show us how to add microdata for rating for Opnecart 2.x for example

Emmanuel Flossie
Reply to  Svetly
5 years ago

Currently Google Shopping does not require reviews to be added as microdata, hence the reason there is no mention of this. I recommend hiring a web developer for this or ask info on OpenCart forum. I wish you the best of luck.

ianhaneyit
ianhaneyit
5 years ago

Hi, I tried this code in my opencart 2.0.3.1 product.tpl file and it messed it up, nothing would load after the menu, the errors in the log are below

2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 674
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 675
2017-07-13 13:28:56 – PHP Notice: Undefined variable: reviewss in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 678
2017-07-13 13:28:56 – PHP Warning: Invalid argument supplied for foreach() in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 678
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 762
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 763
2017-07-13 13:28:56 – PHP Notice: Undefined variable: reviewss in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 766
2017-07-13 13:28:56 – PHP Warning: Invalid argument supplied for foreach() in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 766
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 863
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 864
2017-07-13 13:28:56 – PHP Notice: Undefined variable: reviewss in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 867
2017-07-13 13:28:56 – PHP Warning: Invalid argument supplied for foreach() in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 867
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 954
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 955
2017-07-13 13:28:56 – PHP Notice: Undefined variable: reviewss in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 958
2017-07-13 13:28:56 – PHP Warning: Invalid argument supplied for foreach() in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 958
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 1040
2017-07-13 13:28:56 – PHP Notice: Undefined variable: product in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 1041
2017-07-13 13:28:56 – PHP Notice: Undefined variable: reviewss in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 1044
2017-07-13 13:28:56 – PHP Warning: Invalid argument supplied for foreach() in /home/forsweetsake/public_html/vqmod/vqcache/vq2-system_modification_catalog_view_theme_shovelhead_template_product_product.tpl on line 1044

Emmanuel Flossie
Reply to  ianhaneyit
5 years ago

Sorry for the inconvenience, this is actually for OpenCart 1.5x I will check next week what to do for OpenCart 2 and OpenCart 3. Check this website again late next week.

ianhaneyit
ianhaneyit
Reply to  Emmanuel Flossie
5 years ago

ok thank you, appreciate it

Emmanuel Flossie
Reply to  ianhaneyit
5 years ago

Article has been updated for OpenCart 2.3x

ianhaneyit
ianhaneyit
Reply to  Emmanuel Flossie
5 years ago

OK great, so will it work on opencart 2.0.3.1 now?

Emmanuel Flossie
Reply to  ianhaneyit
5 years ago

It should do, I can’t test it now. But the coding is changed for version 2.3 so it should be solved for 2 too.

ianhaneyit
ianhaneyit
Reply to  Emmanuel Flossie
5 years ago

I have done a test as well and it has the following errors/warnings

quantity
In Stock (The property quantity is not recognized by Google for an object of type Product.) – think this is because rather than having stock figures displayed on the product page, I got text instead saying In stock or out of stock

price
£0.45 (The property £0.45 is not a valid price specification. Learn more about http://schema.org/price.)
warningpriceCurrency
The priceCurrency field is recommended. Please provide a value if available.

JSON-LD
Syntax error: value, object or array expected.

Can you help please?

Emmanuel Flossie
Reply to  ianhaneyit
5 years ago

Please contact me [email protected] for further assistance. I will be back in office on Monday.

ianhaneyit
ianhaneyit
Reply to  Emmanuel Flossie
5 years ago

No problem, have just sent you a email

Baskar Rao
Baskar Rao
5 years ago

Hi Emmanuel,
I have sorted out the currency Issue in my google base feed, i am facing a similar issue Yogesh had, can i use your code in Journal theme ? I believe that Journal theme already has microdata enabled ! can you advise me please !comment image

Emmanuel Flossie
Reply to  Baskar Rao
5 years ago

If you already have microdata you must ether edit the existing code to match my examples in the tutorial or to remove it and place my code in your theme.

Baskar Rao
Baskar Rao
5 years ago

Hi , I am getting this error ” Insufficient match of microdata price information” in my GMC Diagnostics, Our website is built on OC 2.0.3,1 and default currency is INR, but the feeds are showing the prices in USD, what could be the problem please ?

Emmanuel Flossie
Reply to  Baskar Rao
5 years ago

When you are targeting USA with a dedicated data feed, than both the data feed and landing page must be USD. You can not have INR prices when targeting USA. To resolve this make sure the landing page is USD. Hope it helps

Baskar Rao
Baskar Rao
Reply to  Emmanuel Flossie
5 years ago

Thank you Emmanuel, But my Target Country is India and Currency is INR !comment image comment image

Emmanuel Flossie
Reply to  Baskar Rao
5 years ago

Than you must make sure the data feed is also in INR. Check with your plugin tool or management system that you are using. As Google requires both landing page and data feed to have the same language and currency. Along the accurate representation of the product info such as title, image, description etc… Also for landing page and data feed.

Baskar Rao
Baskar Rao
Reply to  Emmanuel Flossie
5 years ago

Thank you Emmanuel, i will check, i think Opencart feed does not support INR ! thanks for your help 🙂

yogesh gupta
yogesh gupta
5 years ago

Hi,

I have am facing error in price section .comment image

Thanks

Emmanuel Flossie
Reply to  yogesh gupta
5 years ago

In the coding you added where you see ‘/[^0-9,.]+/’ remove the comma after the 9
Alternatively copy the updated code In this article. Let me know if you continue having an issue.

MarioOO
MarioOO
5 years ago

Thanks EMMANUEL, it works like charm.
Now google will like our page even more 😀 ( http://www.misaron.si/ )
Thanks, grazie, danke, hvala!

Emmanuel Flossie
Reply to  MarioOO
5 years ago

Pleasure, if you need assistance with any other Google Shopping related tasks, let me know. Such as Google Merchant, Adwords improvements etc…

Cedric D
6 years ago

Hi,
How to present correct product microdata for product you have not fixed price (On quote). If set the price to 0.00 in the SERP it shows : “Free”, but it isn’t free, I would “on quote” or something like this (in french).

Thanks

Emmanuel Flossie
Reply to  Cedric D
6 years ago

I do not understand your question. If you want to show the correct price in the microdata please follow the tutorial. If you are saying it is not showing the correct price, than let me know.

Cedric D
Reply to  Emmanuel Flossie
6 years ago

If it is not a regular product page, but a solution page. There is no fixed price (the price can vary depending on needs), so how can I use microdata to show something like “on quote” instead of a price.

Emmanuel Flossie
Reply to  Cedric D
6 years ago

Hello Cedric, thanks for the explanation. I fully understand now. This article is written for Google Shopping, where fixed prices are required. Microdata is read server side, meaning that the price needs to be there when the page is first loaded. So what you are trying to do would not work due to the way Google crawls pages. It can not select forms thus making a dynamic microdata non beneficial. However if you do want to do this, than you need to look at client side scripting such as javascript to input the correct price. But again this would be pointless as Google does not interact with javascript nor forms. So your solution has to be a base price needs to be pre selected server side. I recommend contacting your web developer. Hope it helps.

Cedric D
Reply to  Emmanuel Flossie
6 years ago

Thanks Emmanuel for your reply 🙂

Selina Destefano
Selina Destefano
6 years ago

Thank you for your time and advice.
All working fine.
Regards
Selina D

Emmanuel Flossie
Reply to  Selina Destefano
6 years ago

Glad to see this all sorted now. Have fun!

Selina Destefano
Selina Destefano
6 years ago

Think I have found the error….your code as sent to me reaads….

I suspect “&it;” and “>” should have been “”‘

Just a guess !! But it has fixed that error.

HOWEVER NOTE THAT THE PRICE HAS NO DECIMAL POINT…..SHOWS 15975 but should be 159.75 !!
(see Srceenshot)
SD

Emmanuel Flossie
Reply to  Selina Destefano
6 years ago

Hi, yes I removed that from my comment as the comments system removes any coding. I have added the updated code in this article. It strips out the currency and keeps both the comma and dot is present.

Selina Destefano
Selina Destefano
Reply to  Emmanuel Flossie
6 years ago

Can’t see the code you refer to.
Code above is still the original code you had up earlier.
Still produces the $ sign and gives an error……

$59.95 (The property $59.95 is not a valid price specification. Learn more about http://schema.org/price.)

Emmanuel Flossie
Reply to  Selina Destefano
6 years ago

Hi, the code in this article is updated, as the preg_replace code is not the same. If you do not see an updated code in this article, please refresh. This is tested now and correct. Reference to line 5

Selina Destefano
Selina Destefano
6 years ago

Hello again.
Thanks for getting back to me. Have done as suggested.
This code is giving me an error message. See screenshot.
SD

Selina Destefano
Selina Destefano
6 years ago

Forgot to add the other screenshot for you !!

Emmanuel Flossie
Reply to  Selina Destefano
6 years ago

Thanks for the screenshot, I have updated the article to strip out the currency symbol.

Selina Destefano
Selina Destefano
6 years ago

Hi Emmanuel,
Did as you suggested and imported the changes to product.tpl
Then ran STructured Data Testing Tool.
On website’s url it came back as “DETECTED”
Running specific Product Landing Pages I get the same WARNING

warningprice
$299.00 (The property $299.00 is not a valid price specification. Learn more about http://schema.org/price.) See ScreenShot.

Looks as if it does not like the “$” sign. Seems to be picking it up from OpenCart through (I assume) this line of code…..

<meta itemprop="price" content="”>

…….may be causing it !

The other ScreenShot reflects the DATA page for OpenCart where PRICE is entered simply as NUMBERS (but as text) with no $ sign……

Any suggestions for correcting this.

Regards
SD

By the way…..Thanks for your response on GOOGLE Forum !!

Emmanuel Flossie
Reply to  Selina Destefano
6 years ago

Hi Selina, I have just updated the code to strip out the currency code for the price. Please check and replace the updated code in this article.

Natalia Farías
Natalia Farías
6 years ago

Hello, I got this error with your code “La propiedad php if (!$special) { echo $price;}else{echo $special;} no es una especificación de precio válida.” on validator. “the property php if (!$special) { echo $price;}else{echo $special;} is not a valid price specification” I’m using Opencart 2.2

Emmanuel Flossie
Reply to  Natalia Farías
6 years ago

Can you email me your template file, so I can have a [email protected]

Adam
Reply to  Emmanuel Flossie
6 years ago

What was the outcome, I have the same issue. I believe its because it adds the £(Currency Symbol), to the price.

Emmanuel Flossie
Reply to  Adam
6 years ago

The initial comment had a for each loop which is for variant products, while the example is for single products. Simply replace the variable to an array value.

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