Adding conditional content guidance to tutorials

[harrythompsondwp]

Suggestion

Using condition content

As far as I can see there's no good guidance on using conditional content, using nunjucks syntax. But I've used and seen it used in quite a few GDS prototypes, and had to teach myself how to do it. I've written the attached guide for colleagues at Opencast, but I figure this would be a useful addition to the tutorials section of the kit. Happy for any of it to be adapted, but something along these lines would be helpful to include! Conditional content.pdf

[harrythompsondwp]

Updated version attached with better guidance on data notation. i.e. {{data['name']}} is better than {{data.name}} as it allows for hyphens in the name tag. Conditional content v2.pdf

[joelanman]

related: #110

[joelanman]

I think we now have most of this in our guides:

• https://prototype-kit.service.gov.uk/docs/conditional-content
• https://prototype-kit.service.gov.uk/docs/pass-data

Thanks @harrythompsondwp for the issue and the content!