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copied!<p>You can implement this in a way similar to this:</p> <h2>Your view:</h2> <pre><code><div data-shipment-mode="A" style="display:none;"> fields that should only be shown for shipment mode A </div> <div data-shipment-mode="B" style="display:none;"> fields that should only be shown for shipment mode B </div> </code></pre> <h2>Your JavaScript:</h2> <pre><code>$(document).ready(function() { $('id-of-shipment-select-menu').change(function() { var successHandler = function(data) { var mode = data.mode; $("div[data-shipment-mode!=" + mode + "]").hide(); $("div[data-shipment-mode=" + mode + "]").show(); }; var shipmentId = $(this).val(); /* replace service_url with the appropriate controller/action */ $.getJSON("/service_url/" + shipmentId, successHandler); }); }); </code></pre> <p>Initially all mode-dependent fields are hidden. Then when you select a shipment, the <code>change</code> callback will be invoked. It sends a request to a service (controller action) that returns the mode for the given shipment. And you use this mode and only show those divs that their <code>data-shipment-mode</code> has the same value.</p> <p>You can even expand this, and when you hide a div, you can clear the values of all the inputs (and selects, etc.) within it as well as disabling them.</p> <p>You can avoid sending the request to the server, if you embed the mode for each shipment in its option tag:</p> <h2>View:</h2> <pre><code><option id="A_SHIPMENT_ID" data-shipment-mode="SHIPMENT_MODE_FOR_THIS_SHIPMENT"> Shipment A </option> </code></pre> <h2>JavaScript:</h2> <pre><code>$(document).ready(function() { $('id-of-shipment-select-menu').change(function(e) { var mode = $(e.target).data("shipment-mode"); $("div[data-shipment-mode!=" + mode + "]").hide(); $("div[data-shipment-mode=" + mode + "]").show(); }); }); </code></pre>

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