Is this a correct way of hiding a page from search engines?

[Loftop]

I want to hide a whole theme from search engines, the theme name is qrcode, I used this code in theme.liquid

{% if template contains 'page.qrcode.json' %}
      <meta name="robots" content="noindex">
    {% endif %}

Here are some screenshots

[pooja_d_92]

Hello,

Please try this form:

<form action="{{ routes.search_url }}">
<input type="text"
placeholder="Search"
name="q"
value="{{ search.terms | escape }}"
/>
<input type="hidden" name="type" value="product" />
<input type="submit" value="Search" />
</form>

Thanks