Form_for tag and :id symbol issue


#1

Hi

I am new to RoR and practice some ruby/rails language feathers on my
toy application. Here is a question about form_for tag in rails.

== the story
People profile can be modified by end user, so there is method called
“update_profile” in the controller.

== the view

<% form_for :person,@person, :url => …do |f|%>
<%f.hidden_field :id %>
<%f.text_field :ppl_name%>

<% end%>

== the controller
def update_profile
person = Person.new(params[:person])
puts person.id

person.new_record = false;
person.save
end

When I print person.id out, the value is nil. However, i can set the
id using below code
person.id = params[:ppl_id]
Can someone explain why so weird? Thanks

–jack


#2

On Feb 9, 2:35 am, “jack.tang” removed_email_address@domain.invalid wrote:

person.new_record = false;
person.save
end

When I print person.id out, the value is nil. However, i can set the
id using below code
person.id = params[:ppl_id]
Can someone explain why so weird? Thanks

–jack

I think if you are using form_for you need to use update_attributes()
to update the record


#3

On Feb 9, 1:35 am, “jack.tang” removed_email_address@domain.invalid wrote:

Hi

== the controller
def update_profile
person = Person.new(params[:person])
puts person.id

person.new_record = false;
person.save
end

You don’t want to create a new Person, do you? You want to just find
the existing person and update it:

person = Person.find(params[:id])
person.update_attributes(params[:person])

And also, new_record is generally something you don’t want to touch -
rails will control it automatically.

Jeff
softiesonrails.com