Simple_form bootstrap style inline-form not working properly - ruby-on-rails

Question

I have a working twitter bootstrap install and simple form generates the following:
<form accept-charset="UTF-8" action="/find_map" class="simple_form form-inline" id="new_location" method="post" novalidate="novalidate"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="✓" /><input name="authenticity_token" type="hidden" value="p5CSoidWaoGMfHY0/3ElWi0XJVg6Cqi9GqWRNlJLBQg=" /></div>
<div class="control-group string required"><div class="controls"><input class="string required" id="location_address" name="location[address]" placeholder="Address" size="50" type="text" /></div></div><input class="btn" name="commit" type="submit" value="Find!" />
</form>
Somehow the "Find!" button won't appear on the same line as the search box. Any ideas?
Thanks!
UPDATE:
Sorry I should have mentioned that all the markup is generated by simple_form based on the following:
<%= simple_form_for #location, :url => find_map_path, :html => { :class => 'form-inline' } do |f| %>
<%= f.input :address, :label => false, :placeholder => "Address" %>
<%= f.submit "Find!", :class => 'btn' %>
<% end %>
So, really, there seems to be an issue with the generated markup, even though I have run the bootstrap install for simple_form, etc.
The above image shows a straight html form
<form class="form-inline">
<input type="text" class="input-small" placeholder="Email">
<button type="submit" class="btn">Sign in</button>
</form>
...above the one generated by simple_form.

Answer 1

I think there are a couple issues here. One is the formatting, and the way simple_form adds a <div> around the input field. #Ron's suggestion of using input_field works for me with simple_form 2.0.1. My example is searching for name in a Contacts table. The following makes the text box and button appear side by side:
<%= simple_form_for :contact, :method => 'get',
:html => { :class => 'form-search' } do |f| %>
<%= f.input_field :search, :placeholder => "Name",
:class => "input-medium search-query" %>
<%= f.submit "Find!", :class => "btn" %>
<% end %>
The other issue is that it seems simple_form usually assumes you want to work with model and field names. The example above uses a :symbol instead of a #model as the first argument as suggested here. But that still generates an input field named contact[search] so you'd have to tell your controller how to deal with that.
I think in this case it may be simpler to not use simple_form and instead use something like the form near the beginning of Ryan Bates' Railscast #240, Search, Sort, Paginate with AJAX:
<%= form_tag contacts_path, :method => 'get', :class => "form-search" do %>
<%= text_field_tag :search, nil, :placeholder => "Name",
:class => "input-medium search-query" %>
<%= submit_tag "Find!", :name => nil, :class => "btn" %>
<% end %>
Now the field is just named "search" and I can consume it in my controller's #index method something like this:
#contacts = #contacts.search(params[:search])
assuming I have this in my model:
def self.search(search)
if search
where('lower(name) LIKE ?', "%#{search.downcase}%")
else
scoped
end
end

Answer 2

It's creating subforms because you're passing input to simple_form. Use input_field instead. (BTW, this also works with simple_fields_for).

Answer 3

You need to customize the control-group and controls div classes to display as inline-block when they are under a form-inline form:
form.form-inline div.control-group { display: inline-block; }
form.form-inline div.control-group div.controls { display: inline-block; }

Answer 4

Adding to Mark's reply:
So, input_field exists to create the input component only, it won't give you any sort of label/error/wrapper. That means you won't get any or tag wrapping the field, you should do that manually in case you want to.
Now about using the form with an object, SimpleForm is a FormBuilder, which means it was created to work with a namespace, either an object or a symbol. SimpleForm's simple_form_for == Rails' form_for, you always need an object namespace to work with.
For such a simple case as a search form, you're better off with simple form helpers such as form_tag, as you've pointed out. There's no need to rely on simple_form_for or form_for for that, I agree and I usually go down that path.
I hope that helps, let me know if you still have doubts.

Answer 5

Change the :html => { :class => 'form-inline' } to :html => { :class => 'form-horizontal' }

Answer 6

can't you move the input button next to input address? I think it will solve the problem
<form accept-charset="UTF-8" action="/find_map" class="simple_form form-inline" id="new_location" method="post" novalidate="novalidate">
<div style="margin:0;padding:0;display:inline">
<input name="utf8" type="hidden" value="✓" />
<input name="authenticity_token" type="hidden" value="p5CSoidWaoGMfHY0/3ElWi0XJVg6Cqi9GqWRNlJLBQg=" />
</div>
<div class="control-group string required">
<div class="controls">
<input class="string required" id="location_address" name="location[address]" placeholder="Address" size="50" type="text" />
<!-- move the button to here -->
<input class="btn" name="commit" type="submit" value="Find!" />
</div>
</div>
</form>

Answer 7

Please, all people with this problem, don't use fluid layout and be sure you are specifying the HTML5 doctype to the documents.