Function call fails with an error from reflect.

[justinas]

Using this code:

package main

import (
    "log"
    "os"

    "github.com/eknkc/amber"
)

func hasData() bool {
    return true
}

var tmpl = `p
    .has-data ? hasData()`

func main() {
    amber.FuncMap["hasData"] = hasData

    compiler := amber.New()
    compiler.Parse(tmpl)
    c, err := compiler.Compile()
    if err != nil {
        log.Fatal(err)
    }
    err = c.Execute(os.Stdout, nil)
    if err != nil {
        log.Fatal(err)
    }
}

Results in this error:

reflect: call of reflect.Value.Type on zero Value

I've been looking at this for days. Am I plugging the function in wrong? Are (non-builtin) functions disallowed in conditional argument conditions? Or is this just a bug?

[zserge]

I have a similar issue. Seems like Amber compiles function call foo() as {{call .foo}}. However, there is no method foo() in the data bound (you pass nil as your template data), thus the error.

I was able to work around this by passing a map of interface{} into c.Execute like c.Execute(os.Stdout, map[string]interface{}{"hasData": hasData})