I'm writing a Rails 3.2 app with backbone, and since I only need rails to render one page, I have no need for a controller to back the index page.
Is there a way to render the layout (application.html.erb) without a controller? I imagine it would be a configuration in the routes.rb file?
My first thought was to move it to index.html in the /public directory, but I need to take advantage of erb for javascript includes and CSRF helpers, etc.
I get that you don't need the controller to do anything, but Rails is "opinionated" software; it expects a controller and a view, because that is the way it was designed, and trying to work around that is going to give you a lot of trouble.
Just
create an empty controller class in /app/controllers/main_controller.rb
create an empty view file /app/views/main/index.html.erb
set up a route like :root => 'main#index'
Easy peasy.
Related
Is there a way to render a partial view with accompanying code in rails?
For instance: I want to be able to create a partial view which will show the top 5 foobars on my site. This partial needs accompanying code to retrieve some foobars from the database, rank them according to an algorithm, and then output the view with the top 5.
I want to be able to include this partial on any page I fancy, preferably just by using something like
<%= render :action => "top_five_foobars" %>
Is this doable? I'm used to asp.net mvc where you can create an action that runs some code and returns a partial, but it seems like in rails it returns simply the template...
If google get you here, you might be looking for cells
Cells are view components for Rails. They are mini-controllers with
their own MVC stack, can invoke logic and render views. They bring
back OOP to Rails' view layer and make writing reusable portlets for
your applications fun.
You need something like a shopping cart, which appears on almost
every page of your app.
You wouldn't use a partial and a helper, would you?
It might not be the cleanest way, but what I did is that I created a helper method in the Application Controller that retrieves the top 5 foobars. Then I call this method in the views. I also cached the part of the view that shows the results.
I have a problem and I dont know how to solve it.
I have a user that log in a web site, and I identify them by session[:user_id] and user has a status page that is defined in user_controller and in status view.
So, I would like to make one page for admin, to see all the statuses from all users on one page, using already written controller and view.
Is that possible?
I could rewrite some of the code, so that I could call with params, like ?user_id=70 and then set session[:user_id]=params[:user_id], but it would be painful if I will have to rewrite whole statuses, beside i would have to maintain same code on 2 different places.
Thank you.
Dorijan
If you need more functionality in your controller, you can add more actions to it. You can also do that in a resourcefull way.
On the other hand it usually is best practice to keep controllers thin.
See: ActionController
In order to make your views reusable, you should use partials.
You could make a _user_status partial.html.erb and render a single partial for a user render all of them for an admin.
Checkout: Layouts and Rendering in Rails
I have a Users controller and a layout called 'users.html.haml'. The problem I'm having is that Rails does not seem to find the users layout automatically. I have to tell every action in the Users controller to render the layout. If I don't tell the action which layout to use, it renders no layout at all.
Currently, the layout renders only if the controller action has this line:
render :layout=>'users.html.haml'
Any ideas? Thanks in advance.
UPDATE:
I'm an idiot. I overwrote the "initialize" method in application controller, and it was causing all layouts to be loaded improperly unless I specifically told the action which layout to use. Didn't have anything to do with haml after all. Thanks for all your answers.
You havev the users.html.haml in your
app/views/layouts
directory right? And not your app/views/users directory?
Try using this:
render :layout=>'users'
NOTE: I have removed the .haml.html part, because that isn't necessary
Other this you can do is to have the layout in top of the controller, like
layout 'users'
Edit: and like #Noli said, your layouts should be in app/views/layouts path
I have a nested resource, setup like this:
resources :chickens do
resources :eggs
end
The views for the EggsController are under views/eggs, but:
describe "eggs/index.html.erb" do
gives a "No route matches {:action => "create", :controller => "eggs"} error on calling render. How do I get RSpec to find the correct (nested) route for view specs?
As a side note, is there any way to specify a nested resource to the Rails 3 controller scaffold generator?
The test looks ok to me...
By any chance do you have a form on your eggs/index.html.erb for creating new eggs that might not yet be wired up correctly? It seems it may be trying to render the index view but failing because the view is trying build a route that doesn't exist? You'd want to make sure that the form is using the correct nested resource route. Does the view render when you load it up in the browser?
Am currently using Rails 3.0 to develop my app.
How to handle a form in the public/index.html file which I'm planning to use as my Home page.
Usually a view's action buttons gets paired with the corresponding method of its controller.
But how to handle this in case the index file in public directory?
This is possible, so long as the form's action attribute is pointing at an action of a Rails controller. However, it is not the norm in Rails to use a static HTML page to capture data. The norm is to use the MVC architecture of Rails.
I have to ask: Have you read the documentation provided on the Ruby on Rails website? Check out http://edgeguides.rubyonrails.org and read the Getting Started section.
Now, I think you might be using public/index.html because you don't know how to use a controller to serve the root of your website. Here's a quick example of how to use a controller instead of public/index.html:
Create a controller (i.e., home via rails g controller Home index)
Modify routes.rb and add root :to=>"home#index"
Delete public/index.html
The above is actually in the Edge Guides, Getting Stated section. So again, I strongly recommend you read the documentation. It will honestly save you a lot of trouble.