I am using a rails mountable engine called 'Child' inside the application called 'Parent'.
I have a partial 'child/user/_index.html.erb'
Now I want to render this child's partial in parent controller. Is it possible?
Means I want to do something like
render :partial => 'child/user/index.html.erb'
Thanks
Ref this
render :file => 'child/user/index.html.erb'
###or try '/child/user/index.html.erb'
I think you can just render user/index
ref http://edgeguides.rubyonrails.org/engines.html
The engine is unable to find the partial required for rendering the
comments. Rails looks first in the application's (test/dummy)
app/views directory and then in the engine's app/views directory. When
it can't find it, it will throw this error. The engine knows to look
for blorgh/comments/comment because the model object it is receiving
is from the Blorgh::Comment class.
This what worked for me:
render file: 'child/user/_index.html.erb'
Related
I am aware that I can override an applications view from within an engine by simply creating the same file within the engine and removing it from the application (eg: 'users/show.html.erb').
However, what I want is to be able to extend the applications view, not override.
Lets say I have a yield inside 'users/show.html.erb' of the main application:
yield :foo
What I want is for the engine to specify the same file 'users/show.html.erb' and to have a content_for block
content_for :foo {}
Thereby, injecting some template data from the engines view, into the applications view.
Obviously, the above won't work as once it has found the template file in the application, it won't look for one in the engine.
Is there a way to make this work?
There is no way to extend views that way in Rails. You can however, accomplish this by using partials. In your engine, write a partial view file users/_show.html.erb and then render it in your app's view:
# app/views/users/show
# will look for a partial called "_show.html.erb" in the engine's and app's view paths.
render partial: 'show'
It's just as easy as your suggestion.
This gem tries to implement partial extension of views, but it works similarly to what I just described: https://github.com/amatsuda/motorhead#partially-extending-views-in-the-main-app
When I try to render a partial from a helper, it fails with this (condensed) error message:
Missing partial /_cube_icon with [...]. Searched in:
Note that the list of searched directories is empty!
In contrast, when using render in a view, it knows where to look:
Searched in: * "/Users/Lars/GitHub/algdb/app/views"
In the helper code, I use ActionController::Base.helpers.render(). Should I use some other render function? How do I tell it where to look for partials? Could I have set up the project wrong somehow?
This is Rails 4.2.4 · Ruby 2.3.1
OK, I figured it out:
I was calling render from code in the helper directory, but not from a function in a standard SomethingHelper module.
When following that convention, things started working.
Partial files normally reside within the app/views directory and are not located in the helpers directory in Rails as you can see from the error message you are receiving. To solve your problem, I would move the _cube_icon file into the app/views directory and organize your code there. I recommend reading this section of the Rails documentation for views Layouts and Rendering
Additionally, it sounds like you may be new to rails so I would take a look at the conventions that rails offers. Rails, as you may or may not know, is an opinionated framework which means certain things need to go in certain locations in order for it to work. Here is another resource on just the view part of Rail's MVC framework Action View Overview. Hope this helps.
---Updated-----
If you really want to render a partial from a helper file, there are a few ways to do so but the best one to use is outlined below:
In app/helpers
module MyHelper
def custom_render
concat(render(:partial => 'cube_icon'))
end
end
Here are some links from stackoverflow to help you out.
Rendering a partial from helper #1
Rendering from a partial from herlper #2
Using concat rails
I am using rails 4 from Suspenders and need to include content from a middleman-blog rack app from a subfolder in a view. In my app, I have the blog content in:
rails root > my_blog > source > index.html.erb.
I have created the view as:
rails root > app > views > welcomes > index.html.haml
The code in my view is:
%h1 Welcome
= render "my_blog/source/index.html.erb"
But when I access the page I get a Missing Partials error and the message says it only looked in the views folder.
How can I render content from a folder outside views?
Partial
The problem is Rails is trying to call a partial, which is not what you're trying to call. A partial should have its name preceded with an _underscore, indicating to Rails that it's a partial, hence why you're receiving your error
The reason this is important is because although you're just calling render, you will actually call the partial too
--
Convention
One of the issues you have is that you'll be going against convention in several ways:
MVC dictates the "view" will be loaded per request (so Rails will expect it to just be present whenever you use it)
The "partials" functionality of your system needs to add to the views you're showing the users. This means you have to be sure you
have a view already showing on screen
This means you need to be certain if you're meant to be using a partial or other element in this part of your app. From the looks of it, whilst you may be doing something right, you need to be sure you're able to load the partial correctly:
<%= render "your/partial/path/_partial_name.html.erb %>
--
View Path
Further to your view path issue, although I've never encountered this issue directly, there is a function called append_view_path, which allows you to add another "path" to look at for your app:
#app/controllers/welcome_controller.rb
Class WelcomeController < ApplicationController
append_view_path(File.join(RAILS_ROOT, "app/themes/#{#current_theme}"))
end
Try this is in your view file:
%h1 Welcome
= render :partial => "my_blog/source/index"
Note: You must have _index.html.erb partial file in the above specified path.
Also, try to change the name from _index.html.erb to _someothername.html.erb, because index.html.erb is usualy a view file for index action. You can avoid the unwanted confusions.
This may help you..!
Thanks!!
Added Lines (Edited):
Please change your file name from
rails root > my_blog > source > index.html.erb.
to
rails root > my_blog > source > _index.html.erb.
Have you tried the full path?
= render "#{Rails.root}/my_blog/source/index.html.haml"
Is there a way to open .html.erb files by themselves in the browser. The Rails app I am trying to have a look at is in rails 2.3 and will not run locally on the rails server nor will it run when I give the command script/server.
I would just like to open the individual views in the browser by themselves...is this possible?
You can open them in the browser, but the <% %> and <%= %> tags will get shown as-is instead of executing the Ruby code. These are template files that need to get processed by Rails to fill in data at runtime. Your best bet is TsaiKoga's answer, making a controller action render the template in question.
In rails4 you can do it like this:
erb a.html.erb > a.html
Maybe it doesn't work in rails 2.3. If you want to render that view, maybe you can use an action just like users#index and change the code to render it:
render "devise/mailer/a.html.erb", :layout => false
I have two RoR3 applications (APP1 and APP2)
www.subdomain1.example.com
www.subdomain2.example.com
and I want to show on APP1 some views from APP2.
I tried to do that using a 'Net::HTTP' request (code in APP1)
Net::HTTP.get( URI.parse("http://www.subdomain2.example.com/users/new") )
but the response is not evaluated as HTTP code. Among other things I do not know if there are other techniques to do what I want in more easy way.
So, is it possible to render partials from APP1 to APP2 using the common and easy approach of rendering partials in the same RoR application?
Example:
render :partial => "/users/new"
If so, how can I do that?
Here, try this:
module ApplicationHelper
require 'open-uri'
def render_url(url)
open url do |f|
f.read.html_safe # remove the 'html_safe' if you're on Rails 2.x
end
end
end
In your view:
<%= render_url 'http://ilikestuffblog.com/' %>
It will work. Just one problem, though: if the site contains relative links to images, other pages, or anything else, those links will not be shown correctly. Try this to see a bunch of blank images:
<%= render_url 'http://www.ducklet.com/' %>
Also, BE WARNED that if you don't own the URL you're including, you will be subject to cross-site scripting weirdness.
If the two applications share a filesystem or have access to a shared filesystem, then you can reference a partial directly by file path. From the Rails guide on rendering:
2.2.4 Rendering an Arbitrary File
The render method can also use a view
that’s entirely outside of your
application (perhaps you’re sharing
views between two Rails applications):
render
"/u/apps/warehouse_app/current/app/views/products/show"
Rails determines that this is a file
render because of the leading slash
character. To be explicit, you can use
the :file option (which was required
on Rails 2.2 and earlier):
render :file =>
"/u/apps/warehouse_app/current/app/views/products/show"
The :file option takes an absolute
file-system path. Of course, you need
to have rights to the view that you’re
using to render the content.
It might be more prudent to create a gem that has any shared code (ie. partials) in it so both apps can use it.