How do I render a view within another view... in rails... is it possible?
#hotdog_controller
def show
# by default renders template hotdog/show.html.erb
end
#hotdog/show.html.erb
<%= render :template => 'ketchup' -%>
Use view partials
See section 3.4 http://guides.rubyonrails.org/layouts_and_rendering.html
A complete view inside another a view? Normally the way you would handle something like this in rails would be with partials.
Create a set of shared partials, and then just render them in each of the views.
I do the same thing a few times, but I load the sub views in through AJAX. And that AJAX is instantiated within the partial.
Related
Within views/layouts/application.html I have the line <%= yield %>. This line is ultimately replaced by views directly corresponding to controller actions without any problems.
In one of my controllers, I am trying to render a partial instead of the default behaviour:
def show
#service_groups = ServiceGroup.where(deleted_at: nil)
render partial: 'table', locals: {rows: #service_groups, headers: service_group_headers}
end
I'm using a partial in this way so that I can use the same basic table structure for various different database tables (across different controllers).
This render partial code doesn't seem to work with the <%= yield %> line in the application layout. The partial code is just rendered on its own without the surrounding layout.
Why is this?
How do I rectify the problem?
Please let me know if I should be handling this a different way.
Thanks.
(migrating from comments)
What if you created a show.html.erb for that controller and placed render :partial there? It should work.
Explanation: Partials are to be used from "big" views. So, they are not wrapped in the layout on purpose!
I understand this is a bad idea, but from what I've seen in ApplicationControllers, using:
render :layout => "something" ...
Should render using a layout located at views/layouts/something.html.erb
However, when I am making this call from inside of a view, it errors out with:
Missing partial my_controller_name/something with ...
Searched in:
* "{path here}/app/views"
Which seems to me its looking for a partial, instead of a layout as I specified. Does anyone know what is going on with that?
A sufficient example small enough to reproduce it:
<%= render :layout => 'something' do %>
<div>Hello</div>
<% end %>
This is all under Rails vs 4.0.2
render works differently in controllers than it does in views. In controllers, it's primarily for rendering action templates, while in views, it's primarily for rendering partial templates. When you want to render a specific layout for an action, you have a few options, but all of them are in the controller.
If you want every action in a particular controller to use that layout, you can either specify layout 'something' in that controller (usually near the top) or for a ApplesController, you can create a new layout in app/views/layouts/apples.html.erb and this will automatically be used as the default layout for the ApplesController.
If you want just a single action in a controller to use that layout, you can use your render layout: 'something' inside of a controller action, where the action to render is implied to be the current action.
Links from the Rails docs:
Action Rendering
Partial Rendering
Nested Layouts
Probably a newbie question, but when my user visits job#index I want to show a partial that is stored in my views/layouts called _subnav.html.erb.
This only needs to render when the user is at jobs#index.
Can someone help me with this but also understand how it works.
I'd suggest you use content blocks.
Within your layout file, such as layout/application.haml, place this code where you want the subnav to be rendered:
= content_for :subnav
..and within your view file (jobs/index.haml)
- content_for :subnav
= render partial: 'layouts/subnav'
Couple of alternatives:
Check controller#action in layout file and only show for jobs#index
Add a simple #show_sub_nav instance variable and set to true within your controller. In your layout file: = render partial: 'layouts/subnav' if #show_sub_nav
You can see how to achieve (2) with my answer here.
What I want to do is have 2 different controllers, client and test_client. The client controller is already built and I want to create a test_client controller that i can use to play around with the UI of the client and adjust it as needed. I am mainly trying to get around the validation i have built into the client and its dependence on an admin controller that loads the data.
so i want the test_client controller to load a sample data set and then render the client controller's index view so i can adjust the clients UI. That is all.
I tried this in the test_clients index method:
class TestClient
def index
render :template => 'client/index'
end
end
but i get an error because it cannot find the client partials as it is looking in the current controllers view for them...
So I have looked into this already and most people say that you should never make such a call but i think that this case is a reasonable usage...I just need to figure out how to get it to work.
You will need to adjust your view so that the path to the partial you need is in the form 'controller/partial'. In this case probably 'client/partial'. Then you can simply use render 'client/index' as before.
So say somewhere in your view you have this:
<%= render :partial => 'info' %>
You will want to change it to this:
<%= render :partial => 'client/info' %>
Convert your client controller views to partials, create empty views for all actions in test_client controller, render client partials for respective test_client views.
Example:
client view
index.html.erb to _index.html.erb
test_client view
index.html.erb
in this view, <%=render :partial => 'clients/index', :locals =>{ }%>
You could do this in a number of ways and everyone is different. One way you could do it, is by putting your finders into a presenter. Then turn some data in the index view into a partial or you can render the template with layout set to false.
Then in the client_test view you can render that index with the presenter associated with it.
I have 2 controllers: articles and comments. For each articles I need to display comments.
Both of them work fine on their own, but how can I get the comments/index inside the controller/show without messing everything up ?
In your show view you would do something like this (assuming you have a app/view/comments view folder and a _comment.html.erb inside):
render :partial => 'comments/comment', :collection => #articles.comments
You can make each comment render as a partial. So, from your comments index page, just render partial on all of the comments.
Then, from your articles show page, render the comments partial for the comments related to that article.
Take a look at using partials in Rails.