Access a map value using a variable key in a Go template
A simpler way would be to do: {{.Amap.key1}}
. However, this will only work if the key is alphanumeric. If not, you'll need to access it using index
.
From the documentation:
- The name of a key of the data, which must be a map, preceded
by a period, such as
.Key
The result is the map element value indexed by the key.
Key invocations may be chained and combined with fields to any
depth:
.Field1.Key1.Field2.Key2
Although the key must be an alphanumeric identifier, unlike with
field names they do not need to start with an upper case letter.
Keys can also be evaluated on variables, including chaining:
$x.key1.key2
You use the index
function:
{{index .Amap "key1"}}
index
Returns the result of indexing its first argument by the
following arguments. Thus "index x 1 2 3" is, in Go syntax,
x[1][2][3]. Each indexed item must be a map, slice, or array.
https://golang.org/pkg/text/template#hdr-Functions