fix: Make render available as global function

jinja2_ext_test.go

@@ -77,9 +77,13 @@ func TestGetVarAndRender(t *testing.T) {
 		{tmpl: "{% set loc = 'l1' %}{{ get_var('loc') }}", result: "l1"},
 		// TODO test for this when https://github.com/pallets/jinja/issues/1478 gets fixed
 		// {tmpl: "{% for e in list %}{{ get_var('e.x') }}{% endfor %}", result: ""},
+		// same is before, but with a workaround to make 'e' a local variable
+		{tmpl: "{% for e in list %}{% set e=e %}{{ get_var('e.x') }}{% endfor %}", result: "i1i2"},
 		{tmpl: "{% set loc = 'l1' %}{{ '{{ loc }}' | render }}", result: "l1"},
 		// TODO test for this when https://github.com/pallets/jinja/issues/1478 gets fixed
-		// {tmpl: "{% for e in list %}{{ '{{ e }}' | render }}{% endfor %}", result: ""},
+		// {tmpl: "{% for e in list %}{{ render('{{ e }}') }}{% endfor %}", result: ""},
+		// same is before, but with a workaround to make 'e' a local variable
+		{tmpl: "{% for e in list %}{% set e=e %}{{ render('{{ e.x }}') }}{% endfor %}", result: "i1i2"},
 	}
 
 	for i, tc := range tests {

python_src/go_jinja2/ext/kluctl_ext.py

@@ -41,6 +41,7 @@ def from_yaml(s):
 
 @jinja2.pass_context
 def render(ctx, string):
+    # TODO we should deprecate render being available as filter, as filters seem to not have access to local variables
     t = ctx.environment.from_string(string)
     return t.render(ctx.get_all())
 
@@ -116,6 +117,8 @@ def add_jinja2_filters(jinja2_env):
     jinja2_env.filters['to_yaml'] = to_yaml
     jinja2_env.filters['to_json'] = to_json
     jinja2_env.filters['from_yaml'] = from_yaml
+    # render is available as filter and as global function. The filter should be deprecated in the future as it is
+    # unable to access local variables
     jinja2_env.filters['render'] = render
     jinja2_env.filters['sha256'] = sha256
     jinja2_env.filters['slugify'] = slugify
@@ -126,3 +129,4 @@ def add_jinja2_filters(jinja2_env):
     jinja2_env.globals['raise'] = raise_helper
     jinja2_env.globals['debug_print'] = debug_print
     jinja2_env.globals['load_sha256'] = load_sha256
+    jinja2_env.globals['render'] = render