Render with handlebars a HTML select element with option selected

Question

I render a HTML select with Handlebars, but I cannot set the selected value, if such value is itself already a rendered data attribute. I found other solutions in SO not satisfactory since they do not address this particular issue.

I tried

<select>
    {{#each countriesList}}
    <option value="{{@key}}" {{{isSelected ./setCountry @key}}}>
        {{this}}
    </option>
    {{/each}}
</select>

I have the following helper to try to set the selected value

isSelected: function (Country, key) {
    return Country === key ? 'selected' : ''; 
}

I render in expressjs

var countries = {'en': 'England', 'fr': 'France', 'de' : 'Germany'};
var data = {'countriesList':countries, 'setCountry': 'fr'};
res.render('home', data);

It should have set the France option as the selected option, but it doesn't work! I also tried to get the rendered attribute from the helper function, but without success. Any ideas?

Answer 1

I found the solution. Apparently it has to do with the dot. Instead of ./ it should be ../ to make reference to the main data variable. Now it works

<select>
    {{#each countriesList}}
    <option value="{{@key}}" {{{isSelected ../setCountry @key}}}>
        {{this}}
    </option>
    {{/each}}
</select>

helper:

isSelected: function (Country, key) {
    return Country === key ? 'selected' : ''; 
}

expressjs:

var countries = {'en': 'England', 'fr': 'France', 'de' : 'Germany'};
var data = {'countriesList':countries, 'setCountry': 'fr'};
res.render('home', data);