Rails - May 2008 - f.checkbox?

Okay so I have a typical search page where a keyword is entered and
results are retrieved that match the keyword.  What I want to do now is
have checkboxes to search for results in specific areas (my site is a
big events calendar with "streams" and "audiences") I want
to use the
checkboxes to look for results in ''streams'',
''audiences'', or both. I
want to be able to return either true or false from a method depending
on whether or not a box is checked.  I have no idea how to do this,
I''ve
only used checkboxes with a database before, and I don''t want to use
columns in a database for this.

This is my setup so far:

in search view:

[code=]<% form_for :event do |f| %>
  <label for="stream_search">Search Streams</label> <%=
f.check_box
:search_streams, {:class=> "check"} %><br />
  <label for="aud_search">Search Audiences</label> <%=
f.check_box
:search_auds, {:class=> "check"} %> <br />
<% end %>[/code]


and I want to be able to somehow get these methods in the event model to
return either true or false depending on the checkboxes so I can use
them in if-statements in my search method:
[code=] def search_streams
  true

  end

  def search_auds
  true

  end[/code]

Thanks in advance for any help!
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> [code=]<% form_for :event do |f| %>
>   <label for="stream_search">Search Streams</label>
<%= f.check_box
> :search_streams, {:class=> "check"} %><br />
>   <label for="aud_search">Search Audiences</label>
<%= f.check_box
> :search_auds, {:class=> "check"} %> <br />
> <% end %>[/code]
> 
if you use them this way, Rails may complain about missing columns, 
since the form _for is bound to the events model.
You could use simple check_box_tag here:

<%= check_box_tag("Search Streams", "search_streams")
%>

or
<%= check_box_tag("Search Streams",
"event[search_streams]") %>

the second version would (if I got the syntax right) add the param to 
params[:event] instead creating it''s own.

the return value would be in params[:search_streams] and be "0" for 
false or "1" for checked. (As a string, not number)

So you could do
if params[:search_streams] == "1" then
...
end
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Thorsten Mueller wrote:
> if you use them this way, Rails may complain about missing columns, 
> since the form _for is bound to the events model.
> You could use simple check_box_tag here:
> 
> <%= check_box_tag("Search Streams",
"search_streams") %>
> 
> or
> <%= check_box_tag("Search Streams",
"event[search_streams]") %>
> 
> the second version would (if I got the syntax right) add the param to 
> params[:event] instead creating it''s own.
> 
> the return value would be in params[:search_streams] and be "0"
for
> false or "1" for checked. (As a string, not number)
> 
> So you could do
> if params[:search_streams] == "1" then
> ...
> end
Should this still work if I want to be able to use the result of the 
checkboxes from the Search view in my Event model? I have this now:


<% form_tag({:controller => ''search'', :action =>
''keyword''}, {:method =>
''post''}) do -%>
  <%= text_field_tag ''text'' -%><%= submit_tag
''Search'' -%> <br /> <br />

  <%= check_box_tag("Search Streams",
"event[search_streams]") %>Search
Streams<br />
  <%= check_box_tag("Search Audiences",
"event[search_auds]") %>Search
Audiences<br />

in my search index, and in my Event model I have:



def self.search_streams
  return params[:search_streams] == "1"
  end

  def self.search_auds
     return params[:search_auds] == "1"
  end


def self.search(keywords, options = {}, *args)
...
if search_streams
   for cal in streams
...


if search_auds
    for cal in audiences

It''s telling me "undefined local variable or method
`params'' for
Event:Class"
with this, I probably just did something wrong with what you said.

Thanks so much for your help!
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> 
> Should this still work if I want to be able to use the result of the 
> checkboxes from the Search view in my Event model? I have this now:
> 
> 
no, you can''t access the params hash from within the model
(You could handle that by passing it to a method, but that''s not the
way
to go)

In case you want to access in in te model just do that:
Add an attr_accessor for those fields to your model like

attr_accessor :search_streams
attr_accessor :search_aud

Then you can continue with yor original code:

<%= f.check_box :search_streams, {:class=> "check"} %>

That way the fields can be handled like db columns in the model, without 
having to actually have them in db

(Sorry, should have thought about that option)
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Thorsten Mueller wrote:
>
> attr_accessor :search_streams
> attr_accessor :search_aud
> 
> Then you can continue with yor original code:
> 
> <%= f.check_box :search_streams, {:class=> "check"} %>
> 
> That way the fields can be handled like db columns in the model, without 
> having to actually have them in db
> 
> (Sorry, should have thought about that option)
okay so i put the attr_accessor statements in the Event model, and i 
changed my boxes back how I had them, but the methods don''t seem to be 
getting a value because my searches give no results no matter what I 
check:

methods in the Event model:

  def self.search_streams
  return :search_streams == 1
  end

  def self.search_auds
     return :search_auds == 1
  end
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So now I have another question to add to this thread! Is there a way to 
get one of these checkboxes to become inactive if the other is checked?
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