Print valid, non-escaped JSON in a view with Rails

Question

I've tried everything. Every combination of the helpers `raw`, `html_safe` `to_json` including some attempts with `::JSON.encode` and `CGI.unescape`. The issue is that regardless of what I do, I can't print well-formed JSON in a view. It's always HTML escaped. Here's the code in my view: `var campaignData<%= "=" + (raw @campaign.to_json) if @campaign %>;` In my case, it's always the quotes that are escaped as ". I would just do a gsub on the quotes, but that is a terrible solution to what IMO ought to be a very simple, well documented use case.

Accepted Answer

The problem here is with the "=" string. As it's considered unsafe, it taints the other string.

You can probably do either:

```
raw("=" + @campaign.to_json)
```

or

```
"= #{@campaign.to_json}".html_safe
```

which are roughly the same.

Print valid, non-escaped JSON in a view with Rails

Solution

Problem