Active Scaffold + Ruby 2.3.5 not working - ruby-on-rails

I have an application with Rails 2.3.5. And Im trying to use AS latest version, I have used it previously but cant make it work here.
I have my ingredient_categories Controller, where i put
class Administration::IngredientCategoriesController < ApplicationController
layout "default"
active_scaffold :ingredient_categories
end
I have this set up on routes to be :active_scaffold=>true
I have a model also called ingredient_category, and in the views folder (inside administration/ingredient_categories, and /ingredient_categories) i have nothing as it is usual.
And Im getting over and over again:
Template is missing
Missing template ingredient_categories/list.html in view path themes/aqueouslight:app/views
I had an error before asking me for a list.erb, which I created and put
'ingredient_categories', :label => 'Categorias' %>
And now this error of the list.thml...
Cant make it work! dont know whhy really... whould be SO simple and its burning my head now..
Thanks!

Make sure you have the render_component plugin installed, as it was deprecated from rails 2.3.x and is used by active scaffold
This may not be the cause of your particular problem but you will have trouble with it if you combine AS+Rails2.3.x
I hope it helps

Related

Getting "Uninitialized constant" routing error when loading a view

I'm a beginner to both ruby and rails, and using Rails 5.17 to develop a web app for a class.
Creating the empty Rails project was successful, but something is going wrong when creating a new controller. I generated a new controller named cars from the root of the project, which was successful. There was a file in app/controllers named cars_controller.rb which looks like this:
class CarsController < ApplicationController
end
I added a method to this file named hello that does nothing.
I then created a file named cars.html.erb in the app/views/layouts directory. This file is a basic page of html code.
In config/routes.rb, I added the following:
get '/cars', to:: 'cars_controller#hello'
resources: cars
After all of this, I ran rails server, and opened localhost:3000 in a browser. This brings up the normal Ruby on Rails welcome page.
But when I go to localhost:3000/cars, I get the following:
Routing Error
uninitialized constant CarsControllerController
I've tried changing the name of the cars_controller.rb file. I've tried changing the name of the class in the controller file from CarsController to Cars. I've tried many different routes in routes.rb. I finally tried uninstalling Rails 5.17 and installing Rails 5.13.
I'm very confused, and I'd be grateful for any advice I can get. Thanks in advance!
One of the great things about Rails is its preference for convention over configuration. However, for this to really benefit you, you need to stick to doing things “The Rails Way” rather than your own way, wherever possible.
In this case, start by getting rid of your custom get route, and just use resources :cars.
From the command line, run rake routes (you might be able to run rails routes on your rails version too) and see the routes that it has created for you.
Now, rename the method you added to your CarsController from hello to index.
Move your hello.html.erb file from app/views/layout to app/views/cars/index.html.erb.
Finally, start the rails server (rails start) and load the url http://localhost:3000/cars in your browser.
—-
Note that templates in app/views/layout have a special purpose. These are used to apply a general template to your views. Look up the use of layout within a controller for more details
I think you have an error in how you had defined your route - you don't need _controller.
Instead, try this:
get '/cars', to: 'cars#hello'
Also, keep in mind that in your cars directory you need the view: hello.html.erb

rails current_teacher keyword not set

I'm new to Ruby on Rails and I'm looking at an application that has a variable called current_teacher. I cannot seem to find where this is set. Everywhere I look the code seems to read from it but where is it set. Is this one of those things that Rails does for you. There is a mode and a table called teachers, so I'm sure this has something to do with it.
I'm very confused by statements like the following, can someone tell me how Rails does this?
if current_teacher.can_request_fieldtrip
Suppose you have a controller like :
class ClientsController < ApplicationController
  def new
if current_teacher.can_request_fieldtrip
# code
end
  end
end
Here is debugging tips :
(a) put this in your Gemfile and do bundle install :
`gem 'pry-rails', :group => :development`
(b) Put the line binding.pry just before the if statement.
(c) Start rails server using rails s.
(d) Hit the browser like http://localhost:3000/new
(e) Now you will be in the Pry console. Just do in the console,
method(:current_teacher).source_location
And the above line tell you where the method has been defined.
Documentation of Method#source_location
Returns the Ruby source filename and line number containing this method or nil if this method was not defined in Ruby (i.e. native)
Rails does not support authentication by itself, however there are a lot of 'add-ons' that rails can use. These 'add-ons' are called gems. This can be a little confusing because you can't actually see their code inside your project folder.
If you open a file called "Gemfile" (it should be in your project folder) you can see a list of gems that you use. Try searching their names on google, you will probably find official web page that contains it's documentation. That way can learn what they do and how to use them.
current_teacher method smells like "Devise" gem
https://github.com/plataformatec/devise
I'm not sure about can_request_fieldtrip, this could be a custom method defined in Teacher model.

Rails & Refinery CMS: Determine the Controller class name from view?

I'm working with an existing Refinery CMS app for a client that has many controllers in many different places. If you are n00b to Refinery CMS, you can nest entire rails apps INSIDE the vender folder and they act like plugins. Its complex how it works and even worse a lot of the models/controllers are embedded in the refinery gem so a controller might exist but theres not file for it.
I wanted to extend a controller by following this example:
http://refinerycms.com/edge-guides/extending-controllers-and-models-with-decorators
which I did but my code was not firing. I did actually fix this so my problem is solved but in the future it would be useful to know what controller called this view I have. The view is tucked away in the gem HOWEVER a partial that it references was already overridden so I could throw something like:
<%= raise self.class.to_yaml %>
The problem with this I get the following error:
can't dump anonymous class: #<Class:0x000000061f5850>
Which isn't very helpful.
My question is this: How can I output the class name of the controller that calls any given view/partial ?
Thanks!
You can use params[:controller]
And params[:action] for current action

TinyMCE Filemanager - Plugin

NOTE: ORIGINAL PROBLEM WAS FIXED, but there's still some issues using the plugin on rails 3.0.3 with ruby 1.8.7, the maintainers have been notified of this. Thanks for everyone's help.
Hi All, I am using the plugin located at https://github.com/galdomedia/tinymce_filemanager
and i have followed the instructions, and the editor does load.
However I am getting the following error when trying to insert an image and use the file browser.
Unknown action
The action 'tinymce_filemanager' could not be found for PagesController
Is this something someone has come across before?
In my controller for pages I have included the following before my methods
include TinymceFilemanager
which is what it said in the instructions.
BTW I am using rails 3.0.3 and ruby 1.9.2
Any help would be greatly appreciated.
Cheers,
Matenia
2nd January 2010 - Update
I have worked out how to avoid this error ... comment out the
# match ':controller(/:action(/:id(.:format)))'
this is due to tinymce_filemanager declaring it's routes after the initial application routes have been loaded and it is trying to match the controller and actions on the above line instead of moving forward.
Now I have a new issue:
NoMethodError in PagesController#tinymce_filemanager_upload_image
undefined method `type' for #<ActionDispatch::Http::UploadedFile:0x00000101ac45e8>
it's saying that the error is in
vendor/plugins/tinymce_filemanager/lib/galdomedia/tinymce_filemanager.rb:249:in upload_base'
vendor/plugins/tinymce_filemanager/lib/galdomedia/tinymce_filemanager.rb:123:intinymce_filemanager_upload_image'
which is (method on line 123)
def tinymce_filemanager_upload_image
upload_base(images_folder, "tinymce_filemanager/list_images", accept_image_mime, image_size_limit)
end
and method on line 249
see: https://github.com/galdomedia/tinymce_filemanager/blob/rails3/lib/galdomedia/tinymce_filemanager.rb#L243
it seems to not find file.type ... hhhmmm ....
going to also try cloning another repo that seems to be using this plugin in a CMS to see where I have gone wrong.
Thank you so far to the stackoverflow community.
Cheers, Matenia
For Rails 3 it looks like the include module is include Galdomedia::TinymceFilemanager, not include TinymceFilemanager, are you using the rails3 branch?
See comments below

Accessing the app name from inside a rails template when generating rails app

I'm messing around with rails 2.3 templates and want to be able to use the app name as a variable inside my template, so when I use...
rails appname -m path/to/template.rb
...I want to be able to access appname inside template.rb. Anyone know how to do this?
Thanks
I was looking for an answer to this question. unfortunately the answer above (#root) doesn't seem to work in Rails 3.
Here's the variables you can access in Rails 3 app templates (even easier):
#app_name
#app_path
Thanks for the answers. Mike Woodhouse, you were so close. Turns out, all you need to do to access the appname from inside your rails template is...
#root.split('/').last
The #root variable is the first thing created when initializing templates and is available inside your rails templates. RAILS_ROOT does not work.
In Rails 3, use the app_name attribute.
See the documentation for the Rails::Generators::AppGenerator.
I ran into a similar problem, none of the variables listed above were available to me in Rails 4. I found that #name was available while running
rails plugin new engines/dummy -m my_template.rb
There are other useful variables available from within the template. You can see for yourself and play around by utilizing pry. Inside my template I added
require 'pry'; binding.pry
and then ran ls to show a list of available instance variables
ls -i
instance variables:
#_initializer #app_path #behavior #destination_stack #extra_entries #name #output_buffer #shell
#_invocations #args #builder #dummy_path #gem_filter #options #rails_template #source_paths
#after_bundle_callbacks #author #camelized #email #in_group #original_name #shebang
There's probably a more straightforward way, but this seems to work:
RAILS_ROOT.split('/').last
EDIT: Bleah - this got voted down once, and the voter was right. If I'd read the question more carefully, I'd have noticed the 2.3 and template.rb elements. Apologies.
I suspect that RAILS_ROOT won't have been created at the point that you need the app name. Looking at ruby\lib\ruby\gems\1.8\gems\rails-2.2.2\bin\rails, however, almost the first thing that happens is this:
app_path = ARGV.first
It's used at the end of the script to allow a chdir and freeze to be done if needed - I didn't know I could insta-freeze at creation, so I learned something new at least. ARGV then gets used here:
Rails::Generator::Scripts::Generate.new.run(ARGV, :generator => 'app')
which quickly gets us to the place where ARGV is really handled:
rails-2.3.1\lib\rails_generator\scripts.rb
where I see
Rails::Generator::Base.instance(options[:generator], args, options).command(options[:command]).invoke!
Somewhere below here is probably where the templating gets handled. I'm afraid I'm at a very early stage with 2.3 and templating is an area that I haven't looked at yet.
Does that help any better than my first effort?
RAILS_ROOT will give you the absolute path to your root directory. Your app name will be the portion of the string after the final '/' which you can grab in any number of ways.
EDIT: Not quite enough to get the job done. Mike and Dan iron it out below.
I believe the preferred way now is to call Rails.root and no longer RAILS_ROOT. Apparently someone on planet rails has an aversion to uppercase or some similar important reason. As of 2.3.5 they both appear to work.
I was getting error
`template': undefined local variable or method `app_name'
ruby 1.9.2p290, rails 3.2.11, thor 0.18.0, Windows
but with rails 2.3 generator:
class DynanavGenerator < Rails::Generators::Base
(can't be sure whether this error happened under rails 3.0.9 or earlier)
changed class definition to be:
class DynanavGenerator < Rails::Generators::NamedBase
which then gave:
No value provided for required arguments 'name'
I then added a 'name' ("something" below):
rails generate dynanav something --force
which gave the original error, so I then added:
def app_name
#name.titleize
end
to the class and all was well.
As of Rails 4 (maybe earlier versions?), use Rails.application.class to get the application name. For example, if your app is named Fizzbuzz, here are a few ways you might access it:
rails(development)> Rails.application.class
=> Fizzbuzz::Application
rails(development)> Rails.application.class.name
=> "Fizzbuzz::Application"
rails(development)> Rails.application.class.parent
=> Fizzbuzz
rails(development)> Rails.application.class.parent.to_s
=> "Fizzbuzz"

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