Usually the 'edit' action is the one that creates the page with the 
form, and the form calls the 'update' action.  Usually there is no 
update view, the update action will usually redirect to the show page 
for that object or the index page for all objects of that type, or will 
re-render the edit page if the object couldn't be saved (because it 
fails validations, most commonly).

So, your links should go to the 'edit' action, not to 'update'.

The reason the form doesn't work is you're putting attributes in that it 
doesn't know about, like controller: form tags just take an 'action' 
attribute, which is the url to submit the form to.  However, hard coding 
forms is bad.  Use form_for to make your form, which should look like 
this:

<%= form_for @your_object do |f|%>
  <% f.text_field :name %>
  ..etc
<% end %>

This will submit to the update action automatically




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