How to access parent data properties in JsRender nested templates

Question

http://jsfiddle.net/tQnVt/621/

This fiddle illustrates my problem.

Say I am binding a JSON onto view with the help of jsrender templates.

v         


        

Answer 1

You need to write

{{if xxx.foo.color===color}}

where xxx is the parent data - in your case the vm you passed in as root data.

(It's all about the 'view hierarchy' - see: http://www.jsviews.com/#views. See also the specific topic Accessing parent data)

Here are several different ways to get to the data on the parent view:

Access ~root which is a shortcut helper for the root data:

{{for testData}}
   {{if ~root.foo.color===color}} 
     
index: {{>color}} (match)
   {{else}}
     
index: {{>color}}
   {{/if}}
{{/for}}

Create a contextual template parameter ~foo to pass the foo property from parent data through to the nested template contexts:

{{for testData ~foo=foo}}
   {{if ~foo.color===color}}
     
index: {{>color}} (match)
   {{else}}
     
index: {{>color}}
   {{/if}}
{{/for}}

Step up through the parent view objects, and get the data view:

{{for testData}}
   {{if #parent.parent.data.foo.color===color}}
     
index: {{>color}} (match)
   {{else}}
     
index: {{>color}}
   {{/if}}
{{/for}}

Use the view.get() helper to find the parent of view of type "data"

{{for testData}}
   {{if #get("data").data.foo.color===color}}
     
index: {{>color}} (match)
   {{else}}
     
index: {{>color}}
   {{/if}}
{{/for}}

I added all of them to your jsfiddle: http://jsfiddle.net/tQnVt/625/

See also this related reply: https://stackoverflow.com/a/34441881/1054484