On Feb 14, 2010, at 1:29 PM, Greg Ma wrote:
Hi,
I added a textarea to my edit student form, to be able to add tags to
this student. I did the simple code below, and this is the error i
get.
I can't see what i did wrong...
#Error message
Processing StudentsController#update (for 127.0.0.1 at 2010-02-14
10:13:22) [PUT]
Parameters: {"commit"=>"Submit",
"authenticity_token"=>"PNvzBi6Ro1XJg0c6CfgKsEw+wfg6DwZfnV2FUpRgqPs=",
"id"=>"1", "student"=>{"full_name"=>"Gregory ", "cb_id"=>"68",
"tag_attributes"=>"greg,toto", "description"=>"voila une jolie
description"}}
Student Columns (12.8ms) SHOW FIELDS FROM `students`
Student Load (0.3ms) SELECT * FROM `students` WHERE
(`students`.`id`
= 1)
WARNING: Can't mass-assign these protected attributes: tag_attributes
#Html form
<% form_for @student do |f| %>
<%= f.error_messages %>
<p>
<%= f.label :cb_id %><br />
<%= f.text_field :cb_id %>
</p>
<p>
<%= f.label :full_name %><br />
<%= f.text_field :full_name %>
</p>
<p>
<%= f.label :description%><br />
<%= f.text_area :description %>
</p>
<p>
<%= text_area_tag "student[tag_attributes]" %>
<p><%= f.submit "Submit" %></p>
<% end %>
#END
#Student Class
class Student < ActiveRecord::Base
has_and_belongs_to_many :data_files
has_and_belongs_to_many :tags
attr_accessible :cb_id, :full_name, :description
You either need to add :tag_attributes to this list to make it
accessible for mass updates...
Or, in the controller code that you didn't show, pluck the
tag_attributes out:
tag_attributes = params[:student].delete('tag_attributes')
before you call @student.update_attributes(params[:student])
and add a call to:
@student.tag_attributes = tag_attributes
-Rob
validates_uniqueness_of :cb_id
def tag_attributes=(tags)
splits = tags.split(',')
splits.each do |tag|
Tag.build(tag)
end
end
end
#END
Thanks for your help
Greg
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Rob Biedenharn http://agileconsultingllc.com
[email protected]
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