Template with JSON parameter

[PayasKrishna]

Hi,

Thanks for the awesome library. I had been looking for underscore.js functionality in java when I found this! However, I have been trying to use underscore-java to get a functionality similar to following:

.template(_.each(items, function(item) { <Tag> ${item.name} <\Tag> }),
where items is a JSON, for example: "{name: 'ABC', name: 'PQR'}"

The output should be "<Tag> ABC </Tag> <Tag> PQR </Tag>"

Is it possible to achieve this?

Regards
Payas

[javadev]

Hi, Payas.

Thank you for your question. I will try to prepare a unit test and pull request with support json for the template method.

Best regards
Valentyn

[javadev]

        $.templateSettings(new HashMap<String, String>() { { put("interpolate", "\\$\\{([\\s\\S]+?)\\}");
            put("evaluate", "\\{\\{([\\s\\S]+?)\\}\\}"); } });
        String list = "{{ _.each(items, function(item) { }} <li>${ item }</li> {{ }); }}";
        Template<Set<Map.Entry<String, Object>>> compiled3 = $.template(list);
        assertEquals(" <li>moe</li>  <li>curly</li>  <li>larry</li> ",
            compiled3.apply((new LinkedHashMap<String, Object>() { {
                put("items", asList("moe", "curly", "larry")); } }).entrySet()));

I prepared an example with ${} wrapper for the variable in template.

[PayasKrishna]

Hi Valentyn,

Thanks for the quick response! The test case for ${ .. } works.

However, I was wondering if something like ${item.property} works as well. We note that ${item} works, where item is a String. What if item is a more complex object, with some item.property as well?

In one case, items can be a JSON: {property: "something", property: "somethingElse"}. Can we use Template class now? This idea can be arbitrarily expanded: with any level of nesting via a JSON string.

I tried to look into the source code but couldn't conclude. Can you please help?

Best,
Payas

[javadev]

Hi Payas,

What if item is a more complex object, with some item.property as well?

No, it will not work. Template replacer checks for the variable name inside function() and changes it inside function's body.

As I know JSON is not allowed to use the key duplicates.

Best regards, Valentyn

[PayasKrishna]

Hi Valentyn,

I guessed as much, but thanks for confirming. And another thanks for such quick replies. :)

Best,
Payas