Use nimja without wrapping code in a proc for `result` variable

[ajusa]

One thing I've noticed about Nimja is that it assumes there is a result variable defined that is of a string type. It'd be nice if I could use this in places without needing to define a wrapper proc, eg inline with a Jester route definition. In that case, the variable result is already declared by the framework.

I'd like to be able to do

resp compileTemplateStr("some nimja code {{someParam}}")

or

var a = compileTemplateStr("some nimja code {{someParam}}")

in any arbitrary block of code without it relying on a result variable. I think it is possible to add this without any breaking changes, but if it isn't then I believe you'd need some sort of overload.

[enthus1ast]

yes good point.
What do you think about this? Could add this to Nimja.
If you have a good name for these functions, please share :)

import nimja


proc tmpls*(str: static string): string {.inline.} =
## compiles a Nimja template string and returns directly.
compileTemplateStr(str)

proc tmplf*(path: static string): string {.inline.} =
## compiles a Nimja template file and returns directly
compileTemplateFile(path)


when isMainModule:
var baa = 1337
echo tmpls("foo {{baa}}")

[ajusa]

Sorry for the late response - this doesn't quite work in Jester due to scoping issues. Eg, if I declare a variable that isn't global the tmpls proc can't see it for interpolation. I have code that looks like this

    var post = postById(@"id")
    resp tmpls """
    <textarea placeholder="Write here" name="text">{{post.text}}</textarea>
    <button hx-get="/posts/{{post.id}}">Cancel</button>
    <button hx-put="/posts/{{post.id}}">Update</button>""" 

which doesn't work as it is being ran within a Jester route, and post isn't a global variable.

[enthus1ast]

I'll have a look again, thanks for reporting.

[enthus1ast]

@ajusa please have a look if this works for you know.
in my tests this works now:

import jester
settings:
  port = 8989.Port

routes:
  get "/hello/@name":
    var nimjaTmplsVar = 1.3 # only here to show we do not shadow this
    resp tmpls"""<h1>{{@"name"}}</h1>"""

[ajusa]

Yes, thank you so much for fixing it!