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Helpers for Handlebars.js
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/** | |
* Helpers for Handlebars. | |
* @author Lee, SeongHyun (Kevin) | |
* @version 0.0.1 (2014-03-15) | |
*/ | |
/** | |
* e.g.) | |
* {{{#cond this.isEnabled "<b>Enabled</b>" "<div class='alert-danger'>Disabled</div>"}}} | |
* equivalent to | |
* {{{#if this.isEnabled}}} | |
* <b>Enabled</b> | |
* {{{else}}} | |
* <div class='alert-danger'>Disabled</div> | |
* {{{/if}}} | |
*/ | |
Handlebars.registerHelper('cond', function(condition, trueValue, falseValue) { | |
return condition ? trueValue : falseValue; | |
}); | |
/** | |
* e.g.) | |
* {{#andCond somethingTrue somethingElseTrue}} | |
* <div>Do something if somethingTrue && somethingElseTrue.</div> | |
* {{else}} | |
* <div>Otherwise something else.</div> | |
* {{/andCond}} | |
*/ | |
Handlebars.registerHelper('andCond', function(condition1, condition2, options) { | |
return condition1 && condition2 ? options.fn(this) : options.inverse(this); | |
}); | |
/** | |
* e.g.) | |
* {{#orCond somethingTrue somethingElseFalse}} | |
* <div>Do something if somethingTrue || somethingElseFalse.</div> | |
* {{else}} | |
* <div>Otherwise something else.</div> | |
* {{/orCond}} | |
*/ | |
Handlebars.registerHelper('orCond', function(condition1, condition2, options) { | |
return condition1 || condition2 ? options.fn(this) : options.inverse(this); | |
}); | |
/** | |
* e.g.) | |
* {{{#ifTrueWrapTag "b" user.isVerified user.name}}} | |
* | |
* result) | |
* if user.isVerified and user.name is "Kevin" | |
* <b>Kevin</b> | |
* if !user.isVerified and user.name is "Kevin" | |
* Kevin | |
*/ | |
Handlebars.registerHelper('ifTrueWrapTag', function(tag, condition, value) { | |
var tagOpen = "<" + tag + ">"; | |
var tagClose = "</" + tag + ">"; | |
return condition ? tagOpen + value + tagClose : value; | |
}); | |
/** | |
* e.g.) | |
* {{{#ifFalseWrapTag "b" user.isVerified user.name}}} | |
* | |
* result) | |
* if user.isVerified and user.name is "Kevin" | |
* Kevin | |
* if !user.isVerified and user.name is "Kevin" | |
* <b>Kevin</b> | |
*/ | |
Handlebars.registerHelper('ifFalseWrapTag', function(tag, condition, value) { | |
var tagOpen = "<" + tag + ">"; | |
var tagClose = "</" + tag + ">"; | |
return !condition ? tagOpen + value + tagClose : value; | |
}); | |
/** | |
* ## HTML: | |
* <select> | |
* {{#select theValue}} | |
* <option value="someValue1">Value 1</option> | |
* <option value="someValue2">Value 2</option> | |
* <option value="someValue3">Value 3</option> | |
* {{/select}} | |
* </select> | |
* | |
* ## Handlebars: | |
* template({ | |
* "theValue":"someValue2" | |
* }); | |
* | |
* ## Result: | |
* <select> | |
* <option value="someValue1">Value 1</option> | |
* <option value="someValue2" selected="selected">Value 2</option> | |
* <option value="someValue3">Value 3</option> | |
* </select> | |
*/ | |
Handlebars.registerHelper('select', function( value, options ){ | |
var $select = $('<select />').html( options.fn(this) ); | |
$select.find('[value=' + value + ']').attr({'selected':'selected'}); | |
return $select.html(); | |
}); |
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