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POHow to have a checkbox fire an ajax call when checked or unchecked in Rails3?
 

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  1. POHow to have a checkbox fire an ajax call when checked or unchecked in Rails3?
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    <p>In my Rails3 application, I have a group of check boxes for a list of tasks. I'd like to fire off an ajax call back to the server whenever one of the check boxes are checked or unchecked. </p> <p>This code is part of a much larger form:</p> <pre><code>&lt;% @provider.tasks_assigned.each do |task_assigned| %&gt; &lt;%= form_for :task_assigned, :url =&gt; { :controller =&gt; "tasks_assigned", :action =&gt; 'update' }, :remote =&gt; true do |t|%&gt; &lt;%= t.hidden_field :id, :value =&gt; task_assigned.id %&gt; &lt;%= t.check_box :provider_completed, { :checked =&gt; task_assigned.provider_completed, :onclick =&gt; "$(this).parent().trigger('submit.rails');" } %&gt; &lt;%= t.label :provider_completed, task_assigned.task_desc.gsub(/(\n\r|\r\n|\n)/, '&lt;br&gt;').html_safe, :style =&gt; "color: #666666; margin-top: 0px;" %&gt; &lt;br /&gt; &lt;% end %&gt; &lt;% end %&gt; </code></pre> <p>This is the generated html:</p> <pre><code>&lt;form accept-charset="UTF-8" action="/tasks_assigned/update" data-remote="true" method="post"&gt; &lt;div style="margin:0;padding:0;display:inline"&gt;&lt;input name="utf8" type="hidden" value="&amp;#x2713;" /&gt; &lt;input name="authenticity_token" type="hidden" value="jECJ4FkV48T5EgCEE0hhPvsbWjG+WGXn59L2knMv7No=" /&gt; &lt;/div&gt; &lt;input id="task_assigned_id" name="task_assigned[id]" type="hidden" value="25" /&gt; &lt;input name="task_assigned[provider_completed]" type="hidden" value="0" /&gt; &lt;input id="task_assigned_provider_completed" name="task_assigned[provider_completed]" onclick="$(this).parent().trigger('submit.rails');" type="checkbox" value="1" /&gt; &lt;label for="task_assigned_provider_completed" style="color: #666666; margin-top: 0px;"&gt;abc&lt;/label&gt; &lt;br /&gt; &lt;/form&gt; &lt;form accept-charset="UTF-8" action="/tasks_assigned/update" data-remote="true" method="post"&gt; &lt;div style="margin:0;padding:0;display:inline"&gt; &lt;input name="utf8" type="hidden" value="&amp;#x2713;" /&gt; &lt;input name="authenticity_token" type="hidden" value="jECJ4FkV48T5EgCEE0hhPvsbWjG+WGXn59L2knMv7No=" /&gt; &lt;/div&gt; &lt;input id="task_assigned_id" name="task_assigned[id]" type="hidden" value="24" /&gt; &lt;input name="task_assigned[provider_completed]" type="hidden" value="0" /&gt; &lt;input id="task_assigned_provider_completed" name="task_assigned[provider_completed]" onclick="$(this).parent().trigger('submit.rails');" type="checkbox" value="1" /&gt; &lt;label for="task_assigned_provider_completed" style="color: #666666; margin-top: 0px;"&gt;Provider completed&lt;/label&gt; &lt;br /&gt; &lt;/form&gt; &lt;form accept-charset="UTF-8" action="/tasks_assigned/update" data-remote="true" method="post"&gt; &lt;div style="margin:0;padding:0;display:inline"&gt; &lt;input name="utf8" type="hidden" value="&amp;#x2713;" /&gt; &lt;input name="authenticity_token" type="hidden" value="jECJ4FkV48T5EgCEE0hhPvsbWjG+WGXn59L2knMv7No=" /&gt; &lt;/div&gt; &lt;input id="task_assigned_id" name="task_assigned[id]" type="hidden" value="22" /&gt; &lt;input name="task_assigned[provider_completed]" type="hidden" value="0" /&gt; &lt;input id="task_assigned_provider_completed" name="task_assigned[provider_completed]" onclick="$(this).parent().trigger('submit.rails');" type="checkbox" value="1" /&gt; &lt;label for="task_assigned_provider_completed" style="color: #666666; margin-top: 0px;"&gt;a&lt;br&gt;b&lt;br&gt;c&lt;/label&gt; &lt;br /&gt; &lt;/form&gt; </code></pre> <p>If I add a submit button in the form it works without any problem but this doesn't look very appealing.</p> <p>The 'onclick="$(this).parent().trigger('submit.rails');"' is my vain attempt to trigger the rails submit code when the check box is checked. The parent (the form) is never found. A javascript error is generated "Object # has no method 'parent'".</p> <p>I believe I am very close to getting it figured out, but I'm obviously missing something.</p>
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    1. USDaniel A. White
    1. USRuss Petersen
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    1. COAre you sure you're running jquery and not prototype? Also, you should just be able to do .submit() instead of trigger('submit.rails')... I'm doing the same thing on my own site.
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      1. POHow to have a checkbox fire an ajax call when checked or unchecked in Rails3?
      1. USJohn Gibb
    2. COI'm at least trying to do jQuery. I've tryed a simple submit() and it does a regular post of the whole page, not a ajax post.
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      1. POHow to have a checkbox fire an ajax call when checked or unchecked in Rails3?
      1. USRuss Petersen
 

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