https://github.com/jmurphyau/ember-truth-helpers

Ember HTMLBars Helpers for {{if}} & {{unless}}: not, and, or, eq & is-array
https://github.com/jmurphyau/ember-truth-helpers

Last synced: about 2 months ago
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Ember HTMLBars Helpers for {{if}} & {{unless}}: not, and, or, eq & is-array

• Host: GitHub
• URL: https://github.com/jmurphyau/ember-truth-helpers
• Owner: jmurphyau
• License: mit
• Created: 2015-01-08T22:55:43.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2024-04-18T20:30:20.000Z (5 months ago)
• Last Synced: 2024-07-24T17:16:19.814Z (2 months ago)
• Language: JavaScript
• Homepage:
• Size: 1.03 MB
• Stars: 707
• Watchers: 13
• Forks: 96
• Open Issues: 19
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE.md

Awesome Lists containing this project

• awesome-ember - ember-truth-helpers - Ember.js HTMLBars Helpers for `{{if}}` & `{{unless}}`: not, and, or, eq & is-array. (Packages / Helpers)

README

        
# Ember Truth Helpers [![CI](https://github.com/jmurphyau/ember-truth-helpers/actions/workflows/ci.yml/badge.svg)](https://github.com/jmurphyau/ember-truth-helpers/actions/workflows/ci.yml)

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

## Compatibility

- Ember.js v3.28 or above

- Embroider or ember-auto-import >= 2 (this is [v2 addon](https://emberjs.github.io/rfcs/0507-embroider-v2-package-format.html))

## 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)                       | `{{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                              |

## API

### is-equal

`is-equal` uses [`Ember.isEqual`](https://api.emberjs.com/ember/3.14/functions/@ember%2Futils/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](https://github.com/jmurphyau/ember-get-helper)

* [ember-composable-helpers](https://github.com/DockYard/ember-composable-helpers)

## Usage with Glint

`ember-truth-helpers` is a glint enabled addon. Add this to your

`types/global.d.ts` file:

```ts

import '@glint/environment-ember-loose';

import type EmberTruthRegistry from 'ember-truth-helpers/template-registry';

declare module '@glint/environment-ember-loose/registry' {

  export default interface Registry extends EmberTruthRegistry, /* other addon registries */ {

    // local entries

  }

}

```

For the entire guide, please refer to [Using

Addons](https://typed-ember.gitbook.io/glint/environments/ember/using-addons#using-glint-enabled-addons)

section on the glint handbook.

Types are made available through package.json `exports` field. In order for TS

to recognize this (beginning from TS 4.7), you must set

[`moduleResolution`](https://www.typescriptlang.org/tsconfig#moduleResolution)

to `node16` or `nodenext`.

## Usage in Single File Components

For usage in `gts` or `gjs` files, all helpers are exported from the index:

```gts

import { or } from 'ember-truth-helpers';

  {{#if (or @admin @user)}}

    Admin Controls are going here

  {{/if}}

```

## Contributing

See the [Contributing](CONTRIBUTING.md) guide for details.

## License

This project is licensed under the [MIT License](LICENSE.md).