Rails - Jul 2009 - link_to, how do you combine url options and html_options?

I have a link-to that I wish to look somewhat like this:


link_to "link here", new_object_path,
                    :method => :post, :confirm => ''Press
OK'', #url
options
                    :class => "css_class", :id =>
"css_id"    #html
options

In any case I can either get the url_for options to work or the html
options to work, but no matter how I arrange () or {} I cannot get both
to work together.  As far as I can determine, the api documents do not
explicitly show this case either.

What I want link_to to generate is:

<a href="/objects/new"
  class="css_class"
  id="css_id"
  onclick="if (confirm(''Press OK''))
   {
    var f = document.createElement(''form'');
    f.style.display = ''none'';
    this.parentNode.appendChild(f);
    f.method = ''POST'';
    f.action = this.href;
    f.submit();
  };
    return false;">link here</a>

 How is this done?
-- 
Posted via http://www.ruby-forum.com/.

Based on the documentation:

link_to(name, options = {}, html_options = nil)

I would expect this is what you are looking for (note haven''t tested
it):

link_to "link here", {new_object_path,
                    :method => :post, :confirm => ''Press
OK''), #url
options
                    :class => "css_class", :id =>
"css_id"    #html
options

HTH,
Nicholas

On Jul 7, 3:12 pm, James Byrne
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> I have a link-to that I wish to look somewhat like this:
>
> link_to "link here", new_object_path,
>                     :method => :post, :confirm => ''Press
OK'', #url
> options
>                     :class => "css_class", :id =>
"css_id"    #html
> options
>
> In any case I can either get the url_for options to work or the html
> options to work, but no matter how I arrange () or {} I cannot get both
> to work together.  As far as I can determine, the api documents do not
> explicitly show this case either.
>
> What I want link_to to generate is:
>
> <a href="/objects/new"
>   class="css_class"
>   id="css_id"
>   onclick="if (confirm(''Press OK''))
>    {
>     var f = document.createElement(''form'');
>     f.style.display = ''none'';
>     this.parentNode.appendChild(f);
>     f.method = ''POST'';
>     f.action = this.href;
>     f.submit();
>   };
>     return false;">link here</a>
>
>  How is this done?
> --
> Posted viahttp://www.ruby-forum.com/.

Nicholas Henry wrote:
> Based on the documentation:
> 
> link_to(name, options = {}, html_options = nil)
> 
> I would expect this is what you are looking for (note haven''t
tested
> it):
> 
> link_to "link here", {new_object_path,
>                     :method => :post, :confirm => ''Press
OK''), #url
> options
>                     :class => "css_class", :id =>
"css_id"    #html
> options
> 
> HTH,
> Nicholas
> 
> On Jul 7, 3:12�pm, James Byrne
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
Presuming that you actually meant the closing ) to be a } I had already 
tried that.  This is what happens:


<%=link_to(''link here'',
        { new_object_path,
          :method    =>  :post,
          :confirm   =>  "Press OK"},
        :id => "css_id")
%>


compile error
index.html.erb:86: syntax error
          :method    =>  :post,
                       ^
index.html.erb:87: syntax error
          :confirm   =>  "Press OK"},

index.html.erb:89: syntax error
).to_s); @output_buffer.concat "\n"
                                   ^

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

James Byrne wrote:
On Jul 7, 3:12�pm, James Byrne
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
> 
> Presuming that you actually meant the closing ) to be a } I had already 
> tried that.  This is what happens:
> 
> 
> <%=link_to(''link here'',
>         { new_object_path,
>           :method    =>  :post,
>           :confirm   =>  "Press OK"},
>         :id => "css_id")
> %>
> 
>
But we were sooooo close. The actual code has to be this:

<%=link_to(''link here'',
         { new_object_path,
           { :method    =>  :post,             # note hash within block
             :confirm   =>  "Press OK"
           }
         },
         :id => "css_id")
%>

Obscure does not do this sort of thing justice.
-- 
Posted via http://www.ruby-forum.com/.

James Byrne wrote:
> But we were sooooo close. The actual code has to be this:
That code does not work either. It does not generate an error but now I 
am back to having the id and class attributes set in the <a> tag, but 
not the onclick.

Arrrgggh

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

On Jul 7, 2009, at 3:12 PM, James Byrne wrote:
>
> I have a link-to that I wish to look somewhat like this:
>
>
> link_to "link here", new_object_path,
>                    :method => :post, :confirm => ''Press
OK'', #url
> options
>                    :class => "css_class", :id =>
"css_id"    #html
> options
>
> In any case I can either get the url_for options to work or the html
> options to work, but no matter how I arrange () or {} I cannot get  
> both
> to work together.  As far as I can determine, the api documents do not
> explicitly show this case either.
>
> What I want link_to to generate is:
>
> <a href="/objects/new"
>  class="css_class"
>  id="css_id"
>  onclick="if (confirm(''Press OK''))
>   {
>    var f = document.createElement(''form'');
>    f.style.display = ''none'';
>    this.parentNode.appendChild(f);
>    f.method = ''POST'';
>    f.action = this.href;
>    f.submit();
>  };
>    return false;">link here</a>
>
> How is this done?
What''s wrong with keeping it simple?

<%= link_to(''link here'', "/url", :method =>
:post, :confirm => "Press
OK", :id => "css_id", :class => "css_class")
%>

<a href="/url" class="css_class" id="css_id"
onclick="if
(confirm(''Press OK'')) { var f =
document.createElement(''form'');
f.style.display = ''none''; this.parentNode.appendChild(f);
f.method =
''POST''; f.action = this.href;var s =
document.createElement(''input'');
s.setAttribute(''type'', ''hidden'');
s.setAttribute(''name'',
''authenticity_token'');
s.setAttribute(''value'', ''1R/
dpXEMn3tUvmXCbVQtdHAnSw9YU36T9n2lDtZ8WlQ='');  
f.appendChild(s);f.submit(); };return false;">link here</a>


Surely, you can also replace "/url" with a named route as in your  
original example. Did you say what version of Rails you have? My  
example uses 2.3.2.

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob-xa9cJyRlE0mWcWVYNo9pwxS2lgjeYSpx@public.gmane.org

If this is taking too much of your time, why don''t just wrap your link
in a span or div then control the class from there? Just a thought.

And I can confirm this works in 2.3.2 too, as per Nicholas post
link_to "link here", new_object_path, :method => :post, :confirm
=>
''Press OK'', :class => "css_class", :id =>
"css_id"

Cheers!
Arzumy

On Jul 8, 6:21 am, Nicholas Henry
<nicholas.he...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> OK, James, I have tested the following in Rails 2.3.2:
>
> link_to "link here", new_object_path, :method => :post,
:confirm =>
> ''Press OK'', :class => "css_class", :id =>
"css_id"
>
> and this does work as you would expect.
>
> What version are you on?
>
> On Tue, Jul 7, 2009 at 4:33 PM, Rob
>
> Biedenharn<R...-GBZH0y1GwQfnZcttdmLDtcI/UQi/AW5J@public.gmane.org>
wrote:
>
> > On Jul 7, 2009, at 3:12 PM, James Byrne wrote:
>
> >> I have a link-to that I wish to look somewhat like this:
>
> >> link_to "link here", new_object_path,
> >>                    :method => :post, :confirm =>
''Press OK'', #url
> >> options
> >>                    :class => "css_class", :id =>
"css_id"    #html
> >> options
>
> >> In any case I can either get the url_for options to work or the
html
> >> options to work, but no matter how I arrange () or {} I cannot get
> >> both
> >> to work together.  As far as I can determine, the api documents do
not
> >> explicitly show this case either.
>
> >> What I want link_to to generate is:
>
> >> <a href="/objects/new"
> >>  class="css_class"
> >>  id="css_id"
> >>  onclick="if (confirm(''Press OK''))
> >>   {
> >>    var f = document.createElement(''form'');
> >>    f.style.display = ''none'';
> >>    this.parentNode.appendChild(f);
> >>    f.method = ''POST'';
> >>    f.action = this.href;
> >>    f.submit();
> >>  };
> >>    return false;">link here</a>
>
> >> How is this done?
>
> > What''s wrong with keeping it simple?
>
> > <%= link_to(''link here'', "/url",
:method => :post, :confirm => "Press
> > OK", :id => "css_id", :class =>
"css_class") %>
>
> > <a href="/url" class="css_class"
id="css_id" onclick="if
> > (confirm(''Press OK'')) { var f =
document.createElement(''form'');
> > f.style.display = ''none'';
this.parentNode.appendChild(f); f.method > > ''POST'';
f.action = this.href;var s = document.createElement(''input'');
> > s.setAttribute(''type'', ''hidden'');
s.setAttribute(''name'',
> > ''authenticity_token'');
s.setAttribute(''value'', ''1R/
> > dpXEMn3tUvmXCbVQtdHAnSw9YU36T9n2lDtZ8WlQ='');
> > f.appendChild(s);f.submit(); };return false;">link
here</a>
>
> > Surely, you can also replace "/url" with a named route as in
your
> > original example. Did you say what version of Rails you have? My
> > example uses 2.3.2.
>
> > -Rob
>
> > Rob Biedenharn          http://agileconsultingllc.com
> > R...-xa9cJyRlE0mWcWVYNo9pwxS2lgjeYSpx@public.gmane.org

<%= link_to(''Your Link'', your_controller_path, :confirm
=> ''Are you
sure?'',
  :method => :post, :id => "css_id", :class =>
"css_class") %>

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

Älphä Blüë wrote:
> <%= link_to(''Your Link'', your_controller_path,
:confirm => ''Are you
> sure?'', :method => :post, :id => "css_id", :class
=> "css_class") %>
Thank you to all who replied.  I am on Rails 2.3.2 and yes, the code 
above does work for me as well.  I cannot gather from the API documents 
that this should work however, which is why I never tried it.
-- 
Posted via http://www.ruby-forum.com/.

I think what was confusing you was the difference between url_options
and html_options. They are not named in the most descriptive format,
but the source is much clearer. The only things that end up in
url_options are things that you can pass to url_for: so
neither :method nor :confirm belong there. You''d pass a hash in that
position if you were, for instance, using old-style routes
(passing :controller and :action explicitly).

All the stuff that ends up producing HTML bits ends up in the last
option.

The example that I think several of the previous posters were thinking
of (splitting the two arrays with {}) is typically encountered with
form_for; but note that form_for takes URL parameters with the :url
key.

--Matt Jones

On Jul 8, 8:50 am, James Byrne
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> Älphä Blüë wrote:
> > <%= link_to(''Your Link'', your_controller_path,
:confirm => ''Are you
> > sure?'', :method => :post, :id => "css_id",
:class => "css_class") %>
>
> Thank you to all who replied.  I am on Rails 2.3.2 and yes, the code
> above does work for me as well.  I cannot gather from the API documents
> that this should work however, which is why I never tried it.
> --
> Posted viahttp://www.ruby-forum.com/.

Matt Jones wrote:
> 
> The example that I think several of the previous posters were thinking
> of (splitting the two arrays with {}) is typically encountered with
> form_for; but note that form_for takes URL parameters with the :url
> key.
I think that this is what happened to me.  I encountered a similar hell 
when trying (eventually successfully) to get html attributes properly 
assigned to a select method inside a forms_for method.  Given the 
similarity of usage and signatures, I extrapolated that (unpleasant) 
previous experience into this method as well.

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