Ruby/Rails 3.1: Given a Url String, Remove Path

Ruby/Rails 3.1: Given a URL string, remove path

With URI::join:

require 'uri'
url = "http://foo.example.com:8080/whatsit/foo.bar?x=y"
baseurl = URI.join(url, "/").to_s
#=> "http://foo.example.com:8080/"

Remove controller_name from URL in Rails 3 and use custom string instead of id

To define that route, try adding the following to your routes.rb:

match '/:id' => 'your_controller#your_action'

This will pretty much match everything to the id of your model. And that's not very nice... You don't want to route youe_host/pages to the pages controller, with an id equal to 'pages'... To prevent that from happening, make sure to put that line on the end of the routes.rb file. The router uses the first route that matches the path received, so putting that line on the end of it will make sure that it will only match your route after it ran out of other meaningful options.

A better practice would be to pass regexp constraints to the router, so that it will only match ids with a specific format, like that:

match '/:id' => 'your_controller#your_action', :constraints => { :id => /your_regexp/ }

Refer to the guides if you have doubts about the rails rounting system. It is pretty well written and covers lots of important things.

Rails rounting - Official Guides

edit: to create a named route, one that you can call in your controllers and override the normal routes that you are probably creating with resource, you have to provide the :as => parameter in your routes.rb

match '/:id' => 'your_controller#your_action', :as => some_name

Then you'll be able to call it in your controller/views like this:

link_to some_name_path(@my_string_id)

Hope this helps. And take a time to read the guides, it has really lots of useful info, including more details about creating named routes.

How to call a certain path in delete method Rails

You can pass arguments to the path helper:

someother_path(first_argument: 'whatever')

Also, if you want the full path of the link (including domain host + port), use this:

someother_url(first_argument: 'whatever')

The last option is to write the path as a string, for example:

link_to 'Destroy', "/posts/#{post.id}/destroy" # etc.

But this last option should not be used as it is complicated to maintain.

How to get URL of a delete method off resource?

I don't think this is the right place to pass the {method: :delete} params. That would go in your helper, like link_to.

link_to('Yum', potato_url(obj), data: { method: :delete })

If you inspect the output of that you'll see something like:

<a data-method="delete" href="/potatos/1" rel="nofollow">Yum</a>

Similarly if you're using a form_for or form_tag. That's where you specify the http method, not the named path or url.

Redirect all break url to a specific method - In Ruby on Rails

duplicate question

Rails catch-all route

put

match '*path' => 'your_controller#your_action' at the end of the
routes.rb file. This is important, since the routes are stepped
through top down.

See also http://guides.rubyonrails.org/routing.html -> 3.10

all routes that are not catched prior to this one will be dispatched to your_controller#your_action

Converting to valid urls which can be opened by open-uri

uri = URI("www.google.com")
if uri.instance_of?(URI::Generic)
    uri = URI::HTTP.build({:host => uri.to_s}) 
end
content_file = open(uri)

There are other ways as well see ref: http://www.ruby-doc.org/stdlib-2.0.0/libdoc/uri/rdoc/URI/HTTP.html

Deleting an entire entry from your databse

You are missing a comma between 'Delete' recipes in the arguments list:

<%= link_to 'Delete', recipes, method: :delete %>

Which solves the syntax error. However placing an <a> inside a <button> tag is invalid HTML.

Permitted content
Phrasing content but there must be no Interactive content

- MDN Web Docs: The Button element

Either just style a regular <a> with CSS to look like a button or create a discrete form with button_to:

<%= button_to 'Delete', recipes, method: :delete %>

Since you seem to be just flailing around you can get an example of the how to actually code this by running the scaffold generator.

$ rails g scaffold recipe title:string

Which generates:

# config/routes.rb
Rails.application.routes.draw do
  resources :recipes
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

---

# app/controllers/recipes_controller.rb
class RecipesController < ApplicationController
  before_action :set_recipe, only: [:show, :edit, :update, :destroy]

  # GET /recipes
  # GET /recipes.json
  def index
    @recipes = Recipe.all
  end

  # ...

  # DELETE /recipes/1
  # DELETE /recipes/1.json
  def destroy
    @recipe.destroy
    respond_to do |format|
      format.html { redirect_to recipes_url, notice: 'Recipe was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_recipe
      @recipe = Recipe.find(params[:id])
    end

    # ...
end

---

# app/views/recipes/index.html.erb
<table>
  <thead>
    <tr>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @recipes.each do |recipe| %>
      <tr>
        <td><%= link_to 'Show', recipe %></td>
        <td><%= link_to 'Edit', edit_recipe_path(recipe) %></td>
        <td><%= link_to 'Destroy', recipe, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

Note that in Rails proper pluralization is very important as it ties in with the whole convention over configuration approach.

Parse a URL and remove end portion

What kind of output you have after processing your code?

Edited

Your problem is that you convert element to_i and it is 0. But you want to compare index of element, but can normally get index of element in that situation using Array#index method.

Correct approach:

@request_path.drop_while { |i| @request_path.index(i) >= @comment_index }

You can parse path without drop_while.

My solution:

def resource_details(path)
    resource_array = path.downcase.split("/").reject!(&:empty?)
    key = resource_array.index("comments")
    return key.present? ? (resource_array - resource_array[key..key + 1]).last(2) : resource_array.last(2)
 end

It will cut out ["comments"] or ["comments","2"] for your path.

Invoke that method:

1.9.3p0 :051 > resource_details("/locations/1/buildings/3/comments")
 => ["buildings", "3"] 

1.9.3p0 :052 > resource_details("/locations/1/comments/2")
 => ["locations", "1"] 

How to parse url to get base url? -- Rails 3.1

Try to use 'uri' library:

require 'uri'
address = 'http://www.1800contacts.com/productlist.aspx?dl=P&source=cj&ac=8.2.0007'
uri = URI.parse(address)
puts "#{uri.scheme}://#{uri.host}"  # => http://www.1800contacts.com

How can I remove the question mark ? in JS and CSS path to files in Ruby on Rails 2.3.5

This is a asset cache breaking mechanism in Rails. You can disable it in your environment.rb or the environment specific file with

ActionView::Helpers::AssetTagHelper.cache_asset_timestamps = false

See https://github.com/rails/rails/blob/2-3-stable/actionpack/lib/action_view/helpers/asset_tag_helper.rb#L517 as well.

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