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POUsing Javascript to Add/Remove Users in Rails Admin Interface
 

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  1. POUsing Javascript to Add/Remove Users in Rails Admin Interface
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    <p>In a Ruby on Rails application, I want to be able to place a User's username in a input text box, press an 'Add' button, and have them appear underneath with their details. Then, I can simply remove them from the list if I want using another button.</p> <p>How does one connect Javascript and Rails database to complete such a task specifically with those buttons? While Javascript isn't a strength of mine, I'm more puzzled by how to extract and modify the Rails database using Javascript. For reference, I'm also using MongoDB.</p> <p>What would be the best way to approach this?</p> <p><img src="https://i.stack.imgur.com/Xdem3.png" alt="Popular::User UI Add/Remove"></p> <p>Here is the jQuery and AJAX code that I'm using to 'POST' to the server endpoint 'admin/popular/users.json', but I'm not sure how to get Rails to create a new user in the database using my Popular::User model.</p> <pre><code>$(document).ready(function() { $('.add-to-popular-users-button').click(function(event){ event.preventDefault(); var addToPopularUsersBtn = $(this); var userToBeAdded = $('input[name=popular_user]').val(); var data = { 'popular_user': {'username': userToBeAdded, 'category': 'popular'} }; var url = "/admin/popular/users.json"; $.ajax({ url: url, data: data, dataType: 'json', type: 'POST', success: function(e) { alert('Great success!'); } }); }); }); </code></pre> <p>Here's my Popular::User model:</p> <pre><code>class Popular::User include Mongoid::Document include Mongoid::Timestamps POPULAR = 'popular' field :category, default: POPULAR index :user_id belongs_to :user validates_presence_of :user_id validates_uniqueness_of :user_id def self.popular user_ids = self.where( :category =&gt; POPULAR ).map(&amp;:id) User.where(:_id.in =&gt; user_ids) end </code></pre>
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    1. COI have the UI set up which is a table and standard button layout. I'll edit with an image. I also have the database querying for the right users with a particular 'category' attribute.
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