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comicgeekspeak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

2006-Nov-07 16:44 UTC

Read cookies in application_helper.rb?

Hi there,

I am trying to write a simple function that checks if a user is logged
in based on a cookie value.

def isLoggedIn()

		if cookies[:userid] != ""
			isLoggedIn = true
		else
			isLoggedIn = false
		end

end

however, when I call this function from my application-wide view, I get
the following error:

undefined local variable or method `cookies'' for
#<#<Class:0xb6e0e920>:0xb6e0e86c>

Can anyone help me understand how I can access my cookies from anywhere
other than an action in a controller?

Thanks,

Bryan


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2006-Nov-07 16:52 UTC

head link

Re: Read cookies in application_helper.rb?

comicgeekspeak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
wrote:> Hi there,
> 
> I am trying to write a simple function that checks if a user is logged
> in based on a cookie value.
> 
> def isLoggedIn()
> 
> 		if cookies[:userid] != ""
> 			isLoggedIn = true
> 		else
> 			isLoggedIn = false
> 		end
> 
> end
> 
> however, when I call this function from my application-wide view, I get
> the following error:
> 
> undefined local variable or method `cookies'' for
> #<#<Class:0xb6e0e920>:0xb6e0e86c>
> 
> Can anyone help me understand how I can access my cookies from anywhere
> other than an action in a controller?
> 
> Thanks,
> 
> Bryan
What you are wanting is to use the session hash. So something like 
session[:blah] . This way the cookie is only a pointer to the session. 
Never trust storing important data in a cookie since it can be modified.

Do a bit of reading up on the session hash.


-- 
Posted via http://www.ruby-forum.com/.

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comicgeekspeak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

2006-Nov-07 16:58 UTC

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Re: Read cookies in application_helper.rb?

But how long is a session active for in Rails?  Is ASP it''s good for 20
minutes.

I don''t want the user to have to log in every time they come to the
site.  So I wouldn''t think a session variable is the way to go.

Let''s table the discussion of cookie vs session.  Where am I allowed to
read cookies and why?

Bry
>
> What you are wanting is to use the session hash. So something like
> session[:blah] . This way the cookie is only a pointer to the session.
> Never trust storing important data in a cookie since it can be modified.
>
> Do a bit of reading up on the session hash.
> 
> 
> -- 
> Posted via http://www.ruby-forum.com/.

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Mark Reginald James

2006-Nov-07 17:34 UTC

head link

Re: Read cookies in application_helper.rb?

comicgeekspeak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:
> I am trying to write a simple function that checks if a user is logged
> in based on a cookie value.
> 
> def isLoggedIn()
> 
> 		if cookies[:userid] != ""
> 			isLoggedIn = true
> 		else
> 			isLoggedIn = false
> 		end
> 
> end
> 
> however, when I call this function from my application-wide view, I get
> the following error:
> 
> undefined local variable or method `cookies'' for
> #<#<Class:0xb6e0e920>:0xb6e0e86c>
> 
> Can anyone help me understand how I can access my cookies from anywhere
> other than an action in a controller?
Add to your ApplicationController class (in application.rb)

      helper_method :cookies

-- 
We develop, watch us RoR, in numbers too big to ignore.


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comicgeekspeak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

2006-Nov-07 18:23 UTC

head link

Re: Read cookies in application_helper.rb?

Awesome!  This worked like a charm.  Thank you.

Now, I have another problem.  My function is always returning true.
Even if I change it and force it return something else.  For example:

def isLoggedIn()

		isLoggedIn = "bob"

end

so when I do this:

<%= isLoggedIn %>

I am seeing: true

How do I get my function to actually return "bob"

Bry
> Add to your ApplicationController class (in application.rb)
>
>       helper_method :cookies
> 
> -- 
> We develop, watch us RoR, in numbers too big to ignore.

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Dr J

2006-Nov-07 21:11 UTC

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Re: Read cookies in application_helper.rb?

Why not just do something like this

def isLoggedIn()

    cookies[:userid] ? true : false

end

On Nov 7, 1:23 pm,
"comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Awesome!  This worked like a charm.  Thank you.
>
> Now, I have another problem.  My function is always returning true.
> Even if I change it and force it return something else.  For example:
>
> def isLoggedIn()
>
>                 isLoggedIn = "bob"
>
> end
>
> so when I do this:
>
> <%= isLoggedIn %>
>
> I am seeing: true
>
> How do I get my function to actually return "bob"
>
> Bry
>
> > Add to your ApplicationController class (in application.rb)
>
> >       helper_method :cookies
> 
> > --
> > We develop, watch us RoR, in numbers too big to ignore.

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Comic Geek Speak

2006-Nov-07 21:13 UTC

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Re: Read cookies in application_helper.rb?

I don''t understand that syntax at all?  Question mark? colon?

Also, when I try to call a function in my view <% if isLoggedIn() =true 
%>  I receive an "undefined method" error.

Bry

On 11/7/06, Dr J <cpjolicoeur-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> Why not just do something like this
>
> def isLoggedIn()
>
>     cookies[:userid] ? true : false
>
> end
>
> On Nov 7, 1:23 pm,
"comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
> <comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > Awesome!  This worked like a charm.  Thank you.
> >
> > Now, I have another problem.  My function is always returning true.
> > Even if I change it and force it return something else.  For example:
> >
> > def isLoggedIn()
> >
> >                 isLoggedIn = "bob"
> >
> > end
> >
> > so when I do this:
> >
> > <%= isLoggedIn %>
> >
> > I am seeing: true
> >
> > How do I get my function to actually return "bob"
> >
> > Bry
> >
> > > Add to your ApplicationController class (in application.rb)
> >
> > >       helper_method :cookies
> >
> > > --
> > > We develop, watch us RoR, in numbers too big to ignore.
>
>
> >
>

-- 
Comic Geek Speak
Uniting the world''s mightiest heroes, one listener at a time.

http://www.comicgeekspeak.com

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Dr J

2006-Nov-07 21:34 UTC

head link

Re: Read cookies in application_helper.rb?

To make it easier for your to read try this

def isLoggedIn()

    return true unless cookies[:userid].nil?
    return false

end

that should return true only if the cookie[:userid] value is set.

then in your view just do  <% if isLoggedIn() %>

you dont need <% if isLoggedIn() == true %>  since isLoggedIn() is by
nature either true or false.

On Nov 7, 4:13 pm, "Comic Geek Speak"
<comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> I don''t understand that syntax at all?  Question mark? colon?
>
> Also, when I try to call a function in my view <% if isLoggedIn() =>
true  %>  I receive an "undefined method" error.
>
> Bry
>
> On 11/7/06, Dr J
<cpjolico...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>
>
>
>
> > Why not just do something like this
>
> > def isLoggedIn()
>
> >     cookies[:userid] ? true : false
>
> > end
>
> > On Nov 7, 1:23 pm,
"comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
> > <comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > Awesome!  This worked like a charm.  Thank you.
>
> > > Now, I have another problem.  My function is always returning
true.
> > > Even if I change it and force it return something else.  For
example:
>
> > > def isLoggedIn()
>
> > >                 isLoggedIn = "bob"
>
> > > end
>
> > > so when I do this:
>
> > > <%= isLoggedIn %>
>
> > > I am seeing: true
>
> > > How do I get my function to actually return "bob"
>
> > > Bry
>
> > > > Add to your ApplicationController class (in application.rb)
>
> > > >       helper_method :cookies
>
> > > > --
> > > > We develop, watch us RoR, in numbers too big to ignore.--
> Comic Geek Speak
> Uniting the world''s mightiest heroes, one listener at a time.
> 
> http://www.comicgeekspeak.com

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Dr J

2006-Nov-07 21:37 UTC

head link

Re: Read cookies in application_helper.rb?

btw

the tertiary operator ( ? : ) is just a more succinct way of doing an
if .. then .. else statement

On Nov 7, 4:13 pm, "Comic Geek Speak"
<comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> I don''t understand that syntax at all?  Question mark? colon?
>
> Also, when I try to call a function in my view <% if isLoggedIn() =>
true  %>  I receive an "undefined method" error.
>
> Bry
>
> On 11/7/06, Dr J
<cpjolico...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>
>
>
>
> > Why not just do something like this
>
> > def isLoggedIn()
>
> >     cookies[:userid] ? true : false
>
> > end
>
> > On Nov 7, 1:23 pm,
"comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
> > <comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > Awesome!  This worked like a charm.  Thank you.
>
> > > Now, I have another problem.  My function is always returning
true.
> > > Even if I change it and force it return something else.  For
example:
>
> > > def isLoggedIn()
>
> > >                 isLoggedIn = "bob"
>
> > > end
>
> > > so when I do this:
>
> > > <%= isLoggedIn %>
>
> > > I am seeing: true
>
> > > How do I get my function to actually return "bob"
>
> > > Bry
>
> > > > Add to your ApplicationController class (in application.rb)
>
> > > >       helper_method :cookies
>
> > > > --
> > > > We develop, watch us RoR, in numbers too big to ignore.--
> Comic Geek Speak
> Uniting the world''s mightiest heroes, one listener at a time.
> 
> http://www.comicgeekspeak.com

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snacktime

2006-Nov-07 21:39 UTC

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Re: Read cookies in application_helper.rb?

On 11/7/06, Comic Geek Speak
<comicgeekspeak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> I don''t understand that syntax at all?  Question mark? colon?
It''s called a ternary operator.  The expression before the ? is
evaluated, and if true whatever is between the ? and : is returned.
If the expression before ? is false, then whatever is after the : is
returned.

Chris

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Dr J

2006-Nov-07 21:41 UTC

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Re: Read cookies in application_helper.rb?

my mistake, you are right.  its the "ternary" not the
"tertiary"
operator.  don''t know what i was thinking of.  haha

On Nov 7, 4:39 pm, snacktime
<snackt...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> On 11/7/06, Comic Geek Speak
<comicgeeksp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>
>
> > I don''t understand that syntax at all?  Question mark?
colon?It''s called a ternary operator.  The expression before the ? is
> evaluated, and if true whatever is between the ? and : is returned.
> If the expression before ? is false, then whatever is after the : is
> returned.
> 
> Chris

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Rails - Nov 2006 - Read cookies in application_helper.rb?

Read cookies in application_helper.rb?

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