Ember Truth Helpers

HTMLBars template helpers for additional truth logic in if and unless statements.

Installation

ember install ember-truth-helpers

Usage

Helper	JavaScript	HTMLBars	Variable argument count allowed
eq	if (a === b)	{{if (eq a b)}}	No
not-eq	if (a !== b)	{{if (not-eq a b)}}	No
not	if (!a)	{{if (not a)}}	Yes
and	if (a && b)*	{{if (and a b)}}	Yes
or	if (a || b) *	{{if (or a b)}}	Yes
xor	if (a && !b || !a && b)*	{{if (xor a b)}}	No
gt	if (a > b)	{{if (gt a b)}}	No
gte	if (a >= b)	{{if (gte a b)}}	No
lt	if (a < b)	{{if (lt a b)}}	No
lte	if (a <= b)	{{if (lte a b)}}	No
is-array	if (Ember.isArray(a))	{{if (is-array a)}}	Yes
is-empty	if (Ember.isEmpty(a))	{{if (is-empty a)}}	No
is-equal	if (Ember.isEqual(a, b))	{{if (is-equal a b)}}	No

^{* Unlike their JavaScript counterparts, these expressions do not short circuit. For example, with (or a b), even if a is truthy, b will still be evaluated. See this explanation.}

API

is-equal

is-equal uses Ember.isEqual helper to evaluate equality of two values. eq should be sufficient for most applications. is-equal is necessary when trying to compare a complex object to a primitive value.

Other Helpers

• ember-get-helper
• ember-composable-helpers

Contributing

Installation

• git clone https://github.com/jmurphyau/ember-truth-helpers.git
• cd ember-truth-helpers
• yarn

Linting

• yarn lint:hbs
• yarn lint:js
• yarn lint:js -- --fix

Running tests

• ember test – Runs the test suite on the current Ember version
• ember test --server – Runs the test suite in "watch mode"
• ember try:each – Runs the test suite against multiple Ember versions

Running the dummy application

• ember serve
• Visit the dummy application at http://localhost:4200.

For more information on using ember-cli, visit https://ember-cli.com/.

License

This project is licensed under the MIT License.