Found it. Use #{}, eval and '"'
e.g. foo = '#{ bar }'
then eval( '"' + foo + '"' ) will interpolate bar
Freshmeat has a great write-up on templates in Ruby at
http://freshmeat.net/articles/templates-in-ruby, including other
approaches
Needless to say, this code is *not safe*. A user can run anything in
that eval. In my application, only trusted users have access to
building templates.
We love Ruby :)
Craig
On Feb 27, 1:17 pm, Dudebot <[email protected]> wrote:
> I'm no expert at Rails, Craig, but I've been writing working Rails
> code for about 8 months now on more than a few projects. I've read
> Agile Development more than once, and have over the course of time
> watched scores of Rails webcasts.
>
> If you have a solution to my question, I'd appreciate it. I don't
> think you understand the question. I need the user to generate their
> own templates. If I was hard coding all the templates for them, this
> would be cake.
>
> On Feb 27, 12:47 pm, Craig White <[email protected]> wrote:
>
> > On Sat, 2010-02-27 at 10:12 -0800, Dudebot wrote:
> > > Thanks, Colin! I'd like to give the user the flexibility to make a
> > > template that interpolates objects within it. Sort of like a mail
> > > merge. The templates are stored as text entries in a database. The
> > > idea is, say you have something like this as a text entry in the
> > > database
>
> > > Dear Mr. <%= @person.lastname %>,
> > > We understand that your favorite programming language is <%=
> > > @person.language %>.
>
> > > Then, if the user was accessing the person show form for @person 2
> > > with lastname Smith and language Ruby, it would display
>
> > > Dear Mr. Smith,
> > > We understand that your favorite programming language is Ruby.
>
> > > I am so open to ideas :) Right now I'm imagining building an XML
> > > parser, and identifying the fields as tags, then replacing them with
> > > the appropriate objects, but I was wondering if there was a more
> > > direct (or better) way.
>
> > ----
> > I think you need to start with another rails beginner tutorial because
> > this is very beginner stuff and easily accomplished just as you said and
> > without any need for xml parsers or sophisticated methods at all.
>
> > Craig
>
> > --
> > This message has been scanned for viruses and
> > dangerous content by MailScanner, and is
> > believed to be clean.
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