Why is my order summary code invalid in Flow?

[NOMADCT]

I'm trying to have an order summary: Order name, number, line items with variant purchased, quantity and image for said variant. 

{{order.customer.email}}
{{order.name}}
{% for li in order.lineItems %}
{% for li in line_item.variant %}
{{ line_item.image | img_url: 'small' | img_tag }}
{{ li.title }}
{% endfor %}

[Dan-From-Ryviu]

Your code is missing another {% endfor %} at the end

[paul_n]

It's also using {% for li in line_item.variant %} when line_item is not defined as a variable

[NOMADCT]

So something like this? 

{{order.customer.email}}
{{order.name}}
{% for li in order.lineItems %}
{item.variant}
{{ line_item.image | img_url: 'small' | img_tag }}
{{ li.title }}
{% endfor %}

{% endfor %}

[paul_n]

No. When you loop over a list, that "li" part is the single item for that iteration of the loop. So if you want to access line item info, you need to use that li. You also have a second closing {% endfor %} for no reason. To learn the basics, I definitely recommend you read up on liquid more here

I'll add that I'm guessing you copy/pasted this code... Flow does not support the exact same liquid as themes, so when you use tags like "img_url" and "img_tag" make sure to confirm they work, because I don't think they are supported in the variant of liquid that Flow uses. I substituted the "URL" field for those tags. This at least passes validation:

{{order.customer.email}}
{{order.name}}
{% for li in order.lineItems %}
{li.variant}
{{ li.image.url }}
{{ li.title }}
{% endfor %}