Implement ANCHORED-DOT pragma

[fish520]

I got mustache today and it amazed me !
but when I'm trying to generate a tree, I went a problem.

this is the code that leads a max stack exceeded error:

var data = [
      {
        nodeName: "1-11111",
        list: [
          {
            nodeName: "2-11111",
            list: [
              {
                nodeName: "3-11111",
                isLeaf: true
              },
              {
                nodeName: "3-22222",
                isLeaf: true
              }
            ]
          }
        ]
      }
    ];
var tpl = '<ul>{{#.}}\n\
  <li>\n\
    <a href="javascript:;">{{nodeName}}</a>\n\
    {{#list}}{{>rec}}{{/list}}\n\
  </li>\n\
{{/.}}</ul>\n';

var output = Mustache.render(tpl, data, {rec: tpl});
console.log(output);

after digging into the source, I found out that it's the context lookup which leads the error.
In my test, the available way is to add a list: [] property to every leaf node, but that's not what the server will return.
how to solve the problem ?

the following syntax is what make it good:

var tpl = '<ul>{{#.}}\n\
  <li>\n\
    <a href="javascript:;">{{nodeName}}</a>\n\
    {{#.list}}{{>rec}}{{/.list}}\n\
  </li>\n\
{{/.}}</ul>\n';

by using .list as a block tagname, it's meaning lookup just the current context, and also, it's reasonable sematically.

as to make it work, just add a few code around line 383: names = name.split('.'), since '.list'.split('.') we get ["", "list"], just remove the empty one and we can get it work !

[bobthecow]

This should do it for you:

<ul>
  {{#.}}
    <li>
      <a href="javascript:;">{{nodeName}}</a>
      {{^isLeaf}}
        {{#list}}{{>rec}}{{/list}}
      {{/isLeaf}}
    </li>
  {{/.}}
</ul>

The {{.list}} functionality you're asking for was suggested in mustache/spec#52 and implemented by Mustache.php in v2.9.0 as the ANCHORED-DOT pragma.

[fish520]

thks for help !

[bobthecow]

No problem.

[dasilvacontin]

We still haven't started working into having a Plugin API or any kind of support for pragmas, but we'll take ANCHORED-DOT into account once we do so. Thanks for reporting! And thanks @bobthecow!