CODEWITHSUNDEEP
ruby-on-railsobserver-pattern
Jay
Jay

Reputation: 6244

rails observe_field

i have used observed_field for arrays of data... but i am having trouble making a simple, one field application of it work. i must be missing a very simple detail. have searched extensively for basic syntax and cannot find anything that applies. when i change the selection, the change is not saved and there is no error msg.

<% form_for :team, :url => update_item_leader_group_path do |f| %>

    <%= f.select :item_id, @selection_collection %>  

    <span id="trigger_spinner" style="visibility: hidden;">
        <img src="/images/spinner.gif" alt="Loading..." />
    </span>

    <%= observe_field 'group_item_id',  
        :url => { :controller => :group, :action => :update_item },  
        :method => :put,  
        :with => "'trig=' + $('group_item_id').value" %>
        :loading => "$('trigger_spinner').setStyle({visibility: 'visible'});",
        :complete => "$('trigger_spinner').setStyle({visibility: 'hidden'});" %>

<% end %>

Upvotes: 0

Views: 837

Answers (3)

Jay
Jay

Reputation: 6244

corrected syntax above 1. form path 2. observer "url" 3. observer "with"

there was also a routing problem. i had to move update_item from a map.resources member to collection

Upvotes: 0

hurikhan77
hurikhan77

Reputation: 5930

The onchange event may not be observed until you leave the focus of the select field. To watch some field changes instantly your only option is to use a form observer.

BTW: The dom id of your field is probably not item_id due to usage of the form builder. @Swards already pointed that out.

Upvotes: 2

Mark Swardstrom
Mark Swardstrom

Reputation: 18080

The id of the field is usually something like id='group_item_id', could this be the issue?

Upvotes: 1

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