I''m trying to create links that have classes using link_to. The only
problem is I can''t figure out the syntax from the Rails API. It says
this:
link_to(name, options = {}, html_options = nil,
*parameters_for_method_reference)
But I know that''s not what you really need to type in because I tried:
<%= link_to "Downloads", :controller =>
''downloads'',
html_options={class="here"} -%>
and got an error. I even tried putting a colon in front of html_options
to make it look like a symbol like the rest of them. No dice.
I''m pretty sure this just comes back to a fundamental inability to read
the api correctly. I''ve been doing this for a year but I still
don''t
know what "options = {}" translates into, for example. Obviously it
isn''t meant to be typed in as it is.
Can anybody explain this for me?
Thanks!
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Hi Sean,
this works:
<%= link_to "Downloads", {:controller =>
''downloads''}, :class =>
''myclass'' -%>
Regards,
Andreas
On 31 Aug., 10:40, Sean Colquhoun
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> I''m trying to create links that have classes using link_to. The
only
> problem is I can''t figure out the syntax from the Rails API. It
says
> this:
>
> link_to(name, options = {}, html_options = nil,
> *parameters_for_method_reference)
>
> But I know that''s not what you really need to type in because I
tried:
>
> <%= link_to "Downloads", :controller =>
''downloads'',
> html_options={class="here"} -%>
>
> and got an error. I even tried putting a colon in front of html_options
> to make it look like a symbol like the rest of them. No dice.
>
> I''m pretty sure this just comes back to a fundamental inability to
read
> the api correctly. I''ve been doing this for a year but I still
don''t
> know what "options = {}" translates into, for example. Obviously
it
> isn''t meant to be typed in as it is.
>
> Can anybody explain this for me?
>
> Thanks!
> --
> Posted viahttp://www.ruby-forum.com/.
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On Aug 31, 9:40 am, Sean Colquhoun <rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> I''m trying to create links that have classes using link_to. The only > problem is I can''t figure out the syntax from the Rails API. It says > this: > > link_to(name, options = {}, html_options = nil, > *parameters_for_method_reference) > > But I know that''s not what you really need to type in because I tried: > > <%= link_to "Downloads", :controller => ''downloads'', > html_options={class="here"} -%> > > and got an error. I even tried putting a colon in front of html_options > to make it look like a symbol like the rest of them. No dice. > > I''m pretty sure this just comes back to a fundamental inability to read > the api correctly. I''ve been doing this for a year but I still don''t > know what "options = {}" translates into, for example. Obviously it > isn''t meant to be typed in as it is. > > Can anybody explain this for me? > > Thanks! > -- > Posted viahttp://www.ruby-forum.com/.Hi Sean, I think the code you''re after is: <%= link_to "Downloads", {:controller => ''downloads''}, {:class => "here"} -%> Here''s my take on the API''s spec, but I''m fairly new to Ruby / Rails, so I might be wrong: link_to takes a name argument. In the example above, this is "Downloads". It also takes a hash of options. If no options are specified, it defaults to the empty hash, denoted by {}. In the example above, options is the hash: {:controller => ''downloads''} It also takes a second hash of html_options, which defaults to nil, if no hash is supplied. In the example above, html_options is {:class => "here"} A source of confusion is that if a hash is the last argument to a Ruby method, the brackets may be omitted. Therefore the following is equivalent to the example above: <%= link_to "Downloads", {:controller => ''downloads''}, :class => "here" -%> Finally, the following is *not* equivalent to the first example, and will result in options containing both controller and class entries; meanwhile html_options will be nil: <%= link_to "Downloads", :controller => ''downloads'', :class => "here" - %> Hope this helps some. Cheers, Louis. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
OK. Let me just rephrase to make sure I get it: the API gives only the
order of arguments, not their syntax? Because their syntax is usually
similar (:something => ''something'' or {:something =>
''something''}), so
it has simply been omitted?
Anyway, thanks!
sean
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On Aug 31, 10:24 am, Sean Colquhoun <rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> OK. Let me just rephrase to make sure I get it: the API gives only the > order of arguments, not their syntax? Because their syntax is usually > similar (:something => ''something'' or {:something => ''something''}), so > it has simply been omitted? > > Anyway, thanks! > sean > -- > Posted viahttp://www.ruby-forum.com/.The snippet from the API that you''re looking at is the method signature. So to answer your question, yes this part of the API only specifies the order of the arguments (and their names, but that''s not too important to you.) To get a complete picture of what a method does, consider also the description of the method. For the link_to method, that description includes the following text: "The html_options will accept a hash of html attributes for the link tag. It also accepts 3 modifiers that specialize the link behavior. * :confirm => ''question?'': This will add a JavaScript confirm prompt with the question specified. If the user accepts, the link is processed normally, otherwise no action is taken. * :popup => true || array of window options: This will force the link to open in a popup window. By passing true, a default browser window will be opened with the URL. You can also specify an array of options that are passed-thru to JavaScripts window.open method. * :method => symbol of HTTP verb: This modifier will dynamically create an HTML form and immediately submit the form for processing using the HTTP verb specified." This explains precisely what are considered valid contents for the html_options hash (i.e. the third argument to link_to). For reference, a complete description of the link_to method, check out: http://www.noobkit.com/actionpack-actionview-helpers-urlhelper-link_to Hope this helps. Cheers, Louis. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---