On Sat, 20 Oct 2012 06:17:54 GMT, Sönke Ludwig wrote:

As for the actual problem ;) - I'm pretty sure that req.params["username"] throws a RangeError there (maybe it should be req.form[]?). If you setLogLevel(LogLevel.Debug), you should get a stack trace on the console that gives more certainty.

Still does not work. Here is an example:

	void defaultHandler(HttpServerRequest req, HttpServerResponse res)
	{
		auto answ = conn.exec("select 12345");
		string cell = answ[0,0].as!PGtext;
		render!("test.dt", req, cell, answ)(res);
	}

extends layout

block content
    h3 this is a form:
    form(method='get')
        fieldset
            legend General
                label(for='username') Username:
                    input( type='text', name='username', value='vasya22' )
                    p #{cell} // done
                    p #{answ[0,0].as!PGtext} // error

cell variable passes to temlate parser, but answ[0,0].as!PGtext causes error:

Compiling diet template 'test.dt'...
test.dt(7): Error: undefined identifier PGtext, did you mean template text(T...)?
test.dt(7): Error: cannot resolve type for (*answ.opIndex(0LU,0LU)).as!(error)
test.dt(7): Error: template vibe.templ.diet.toString does not match any function template declaration
diet.d(912): Error: template vibe.templ.diet.toString(T) cannot deduce template function from argument types !()(error)

(answ[0,0].as!PGtext is actually a string type)

Apparently, I do not understand what types of variables supports templates parser. It would be convenient to show result of sql query in the template, but at the moment I can't.

On Sun, 21 Oct 2012 02:21:13 GMT, denizzzka wrote:

(...)

Compiling diet template 'test.dt'...
test.dt(7): Error: undefined identifier PGtext, did you mean template text(T...)?
test.dt(7): Error: cannot resolve type for (*answ.opIndex(0LU,0LU)).as!(error)
test.dt(7): Error: template vibe.templ.diet.toString does not match any function template declaration
diet.d(912): Error: template vibe.templ.diet.toString(T) cannot deduce template function from argument types !()(error)

(answ[0,0].as!PGtext is actually a string type)

Apparently, I do not understand what types of variables supports templates parser. It would be convenient to show result of sql query in the template, but at the moment I can't.

For most external symbols, you need to add an appropriate import statement, as the compiled template file has it's own scope:

- import module.containing.pgtext;

Btw. (I know I need to change the documentation at some places) render!() is still suspicious for linker errors, or worse, memory corruption, because the corresponding DMD issue was never fully resolved (although marked as such). I still need to do a dustmite run at some day. But for now renderCompat!() is the safer choice.

Where? At the point where renderer called "import" already added (and
assignment to a variable "cell" works well)

Think of the template like it is a separate module, it needs its own
list of imports. Just accessing the passed-in variables will work
regardless of imports, but as soon as something is to be referenced by
name, it must be imported first.

A possible place would be right at the beginning of the block:

extends layout

block content
   - import xyz;
   h3 this is a form:
   form(method='get')
       fieldset
           legend General
               label(for='username') Username:
                   input( type='text', name='username', value='vasya22' )
                   p #{cell} // done
                   p #{answ[0,0].as!PGtext} // error