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🔼🔽 Provides thumbs up/thumbs down functionality for Symfony project

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tomasliubinas/LtUpvoteBundle

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LtUpvoteBundle

LtUpvoteBundle is upvote and downvote (thumbs up and thumbs down) component for Symfony 3.0 project

Features

  • Configurable vote permissions
  • Automatically limit unauthenticated upvotes/downvotes by IP
  • Optionally hide upvote/downvote button
  • Pure JavaScript frontend component implementation
  • Unit tested

System requirements

  • Symfony 3.0
  • Doctrine bundle with configured database connection

Installation

  • Require LtUpvoteBundle over composer in your existing Symfony project:
composer require liubinas/upvote-bundle
  • Initialize it in the app/AppKernel.php file:
$bundles[] = new Lt\UpvoteBundle\LtUpvoteBundle();
  • Import LtUpvoteBundle routing:
# app/config/routing.yml
lt-upvote:
    resource: "@LtUpvoteBundle/Resources/config/routing.xml"
  • Create required database tables:
$ bin/console  doctrine:schema:update

Configuration

The following is an example configuration defining basic context types blog-post and comment:

    # app/config/config.yml
    lt-upvote-bundle:
        types:
            blog-post: # Custom context type
                show_upvote: true
                show_downvote: true
                allow_unauthenticated_upvote: true
                allow_unauthenticated_downvote: false
            comment # Custom context type having the default values all true

Test run

Start web server:

$ bin/console server:start

Test page could be accessed by navigating to http://<dev-host>/lt-upvote-test on your dev environment.

Front-end

Front-end functionality is implemented in a single dependency free JavaScript file. Styles are defined in CSS file which could be used out of the box or adopted according to custom requirements.

JavaScript

  • Include JavaScrip module file (Twig syntax):
<script src="{{asset('/bundles/ltupvote/js/lt-upvote.js')}}"></script>
  • Initialize JavaScript module in your HTML page:
<script language="JavaScript"><!--
    ltupvote.init();
    //-->
</script>

CSS

  • Include basic CSS file in your html <head> section:
<link rel="stylesheet" type="text/css" href="{{ asset('/bundles/ltupvote/css/lt-upvote.css') }}">

Twig

  • Include one or more front end components into your page rendered over Controller
{{ render(
    controller(
        'lt_upvote_bundle.controller.default:renderVoteComponent',
        {
            'subjectType': '[TYPE]',
            'subjectId': '[ID]',
            'css_class': '[CLASS]' 
        }
    )
) }}

Where:

  • [TYPE] is context type value.
  • [ID] is Subject ID value.
  • [CLASS] is component specific styling CSS class. Predefined styles are Style1, Style2.

See test.html.twig file for example implementation.

JavaScript Custom Event handling

On each upvote/downvote action JavaScript event is dispatched. This action could be handled by adding custom event listener for ltu event type.

An example code for unauthenticated downvote handling:

addEventListener('ltu', function(event) {
    if (event.detail.unauthenticatedError) {
        alert('This action is permitted for the logged in visitors only.');
    }
})

The following properties describing performed action could be accessed from even.detail data object: id, type, counter, action, unauthentificated, unauthentificatedError.

License

This bundle is under the MIT license. See the complete license in LICENSE file. f

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🔼🔽 Provides thumbs up/thumbs down functionality for Symfony project

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