Referencing a JavaScript source in the vendor file in Rails 4: Tips and Tricks

After realizing that my GMaps for Rails setup needs amendment, I've decided to insert javascript files directly into my app. Rails 4 - Gmaps4Rails - map won't render

I've downloaded the infobox and markerclusterer repositories and now find myself struggling to reference these necessary files in my application.

The folders containing the required files are located within my vendor directory.

The javascript files I need to use are: infobox.js and markerclusterer.js

You can locate them here:

 vendor/js-marker-clusterer/src/makerclusterer.js
vendor/v3-utility-library/src/infobox.js

My goal is to replace the code in this view with these files:

<script src="//maps.google.com/maps/api/js?v=3.18&sensor=false&client=&key=&libraries=geometry&language=&hl=&region="></script> 
<script src="//google-maps-utility-library-v3.googlecode.com/svn/tags/markerclustererplus/2.0.14/src/markerclusterer_packed.js"></script>
<script src='//google-maps-utility-library-v3.googlecode.com/svn/tags/infobox/1.1.9/src/infobox_packed.js' type='text/javascript'></script> <!-- only if you need custom infoboxes -->

Should I reference these javascript files in app/application.js? If so, where should I start in the path since these files are not within the vendor/assets/javascripts folder?

Furthermore, I understand that I also need to incorporate the markerclusterer images. These images have been included in the cloned repository and are stored in the vendor/js-markerclusterer/images folder. How can I properly reference these images in the view for them to function correctly?

Answer №1

The most efficient approach would be to store the folders js-marker-clusterer and v3-utility-library within the vendor/assets/javascripts directory so that you can easily access the required files in application.js like this:

//= js-marker-clusterer/src/makerclusterer
//= v3-utility-library/src/infobox

If, for any reason, you are unable to do so, you have the option of adding a custom path to the config.assets.paths array to enable the autoloader to locate them.

// application.rb
config.assets.paths << Rails.root.join("vendor", "js-marker-clusterer")
config.assets.paths << Rails.root.join("vendor", "v3-utility-library")

Subsequently, you can reference them as follows:

//= src/makerclusterer
//= src/infobox

Answer №2

Utilizing content delivery networks (CDNs) or Googlecode servers can enhance the loading speed of your files, making it beneficial to do so without causing any harm.

<script src="//maps.google.com/maps/api/js?v=3.18&sensor=false&client=&key=&libraries=geometry&language=&hl=&region="></script> 
<script src="//google-maps-utility-library-v3.googlecode.com/svn/tags/markerclustererplus/2.0.14/src/markerclusterer_packed.js"></script>
<script src='//google-maps-utility-library-v3.googlecode.com/svn/tags/infobox/1.1.9/src/infobox_packed.js' type='text/javascript'></script> <!-- only if you need custom infoboxes -->

If you wish to load them using the manifest file (i.e., application.js), you can place markerclusterer.js and infobox.js in your app/assets/javascripts folder and include them in application.js as shown below:

//application.js file's content
//= markercluster
//= infobox

To ensure that these files load after the Google Maps API file, it is advisable to add application.js after calling for the maps API. This ensures that the Google Maps API is loaded first, making the google.maps object available for use.

<script src="//maps.google.com/maps/api/js?v=3.18&sensor=false&client=&key=&libraries=geometry&language=&hl=&region="></script>
<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>

Furthermore, you can organize all images in folders within app/assets/images directory and access them similarly to other images within the application.

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