In a controller I call a service like:
MyService.call
In the MyService.call method I want to use a url helper:
Rails.application.routes.url_helpers.something_url
However, I get the error:
Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true
in config/environments/development.rb I have:
config.action_mailer.default_url_options = { host: 'localhost:3000' }
config.action_controller.default_url_options = { host: 'localhost:3000' }
What should I set not to get the error?
You could set the host in the config files as:
Rails.application.routes.default_url_options[:host] = 'your_host'
This will set the default host not just for action_mailer and action_controller, but for anything using the url_helpers.
According to this thread, whenever using route helpers, they don't defer default_url_options to ActionMailer or ActionController config and it is expected that there will be a default_url_options method in the class. This worked for me:
class MyService
include Rails.application.routes.url_helpers
def call
something_url
end
class << self
def default_url_options
Rails.application.config.action_mailer.default_url_options
end
end
end
Note that you can use action_mailer or action_controller config depending which you've configured.
Related
Missing host to link to! Please provide the :host parameter, set
default_url_options[:host], or set :only_path to true
I randomly get this error at time, generally restarting the server fixes the issue for a while, and then it shows up again.
I have added
config.action_mailer.default_url_options = "localhost:3000", in the development and test.rb files.
Also, I have used include Rails.application.routes.url_helpers
in one module to get access to the routes, I read this could be the reason I get these errors but removing it will leave me with no access to the routes.
The module is for the datatables gem.
For Rails 5, use:
Rails.application.routes.default_url_options[:host] = "XXX"
You can put this in a config/environments/ file (or any other initializer), or e.g. at the beginning of config/routes.rb.
You should write in the following way
For Development(development.rb)
config.action_mailer.default_url_options = { :host => "localhost:3000" }
In production (production.rb)
config.action_mailer.default_url_options = { :host => "myproductionsite.com" }
I had a similar error. The problem is in your configuration.
Try rewriting your configuration for your development.rb and test.rb like this:
config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
Also check that your configuration in production.rb is written correctly like this:
config.action_mailer.default_url_options = { host: 'myherokuapp.herokuapp.com' }
You have updated the default url options for action mailer.
URL helpers will take the option from action_controller settings.
config.action_controller.default_url_options = .....
BR
In my production.rb I set my asset_host to CloudFront like so:
config.action_controller.asset_host = 'http://xxxxxxxx.cloudfront.net'
Now I'm finding that in some circumstances (specifically, outputting JavaScript to be embedded into another site) I need to set the asset_host in the development environment too, the default null won't cut it. Ideally I want to set:
config.action_controller.asset_host = 'http://localhost:3000'
but this port can't be guaranteed, and I'm reluctant to hard-code it. Is there a way to set asset_host to the current domain and port?
Thanks!
You can make use of environment variables or Rails initializer parameters
config.action_controller.asset_host = ENV[ASSET_HOST].empty? ? 'http://' + Rails::Server.new.options[:Host] + ':' + Rails::Server.new.options[:Port] : ENV[ASSET_HOST]
This way if you set the environment variable you use that address otherwise it will use the default.
In Rails 4 we use a dynamic asset_host setting with a proc:
# in /config/environments/development.rb
Rails.application.configure do
config.action_controller.asset_host = Proc.new { |source, request|
# source = "/assets/brands/stockholm_logo_horizontal.png"
# request = A full-fledged ActionDispatch::Request instance
# sometimes request is nil and everything breaks
scheme = request.try(:scheme).presence || "http"
host = request.try(:host).presence || "localhost:3000"
port = request.try(:port).presence || nil
["#{scheme}://#{host}", port].reject(&:blank?).join(":")
}
# more config
end
This code ensures that requests from localhost:3000, localhost:8080, 127.0.0.1:3000, local.dev and any other setup just work.
This value is available during startup and might help:
Rails::Server.new.options[:Port]
Try adding it to the asset_host variable of your development.rb file.
Based on this answer: https://stackoverflow.com/a/13839447/1882605
Try:
class ApplicationController < ActionController::Base
before_filter :find_asset_host
private
def find_asset_host
ActionController::Base.asset_host = Proc.new { |source|
if Rails.env.development?
"http://localhost:3000"
else
{}
end
}
end
Devise confirmation_url is producing just a relative url with no domain such as:
http://users/confirmation?confirmation_token=...
I tried changing
confirmation_url(#resources, :confirmation_token => #resource.confirmation_token)
to
confirmation_url(:confirmation_token => #resource.confirmation_token)
but it produces the same url. I upgraded to devise 2.2.3 but same outcome. Rails 3.1.4
Update:
I have set in my production.rb:
config.action_mailer.default_url_options = { :host => 'mysubdomain.mysite.com' }
and I tried setting
before_filter set_actionmailer_host
def set_actionmailer_host
ActionMailer::Base.default_url_options[:host] = request.host_with_port
end
to no avail in application controller (https://github.com/plataformatec/devise/issues/1567)
Update:
This occurs in both development and production.
Update
I can't understand why Devise isn't using the template in app/views/devise/mailer/confirmation_instructions.html.haml If I could edit that I could append the host manually: 'http://mysite.com/' + confirmation_url(...
I tried setting the scoped views setting but it didn't have any effect
This is a disaster, users can't confirm their registration :(
You might have missed to add the default url hosts to your environment config-files. When you run the rails g devise:install command you usually receive those instructions.
# config/environments/development.rb
# Default actiomailer url host (required by devise)
config.action_mailer.default_url_options = { host: 'myapp.dev' }
You need this setting for all your environments.
# config/environments/production.rb
# Default actiomailer url host (required by devise)
config.action_mailer.default_url_options = { host: 'myproductionapp.com' }
I have a Sidekiq worker that is intended to perform social actions (e.g.: like pages on Facebook). Part of this requires knowing the URL for the object being liked.
Fortunately, Rails 3 makes it easy to access app-specific routes by including Rails.application.routes.url_helpers in whatever class or module needs access to the path/url helper method.
The problem I'm running into is that my default url/port are not accessible from within my Sidekiq worker despite various attempts to define them in my development.rb or production.rb.
class Facebook::LikeRecipeWorker
include Sidekiq::Worker
include Rails.application.routes.url_helpers
sidekiq_options queue: :facebook
def perform(recipe_id, user_id)
recipe = Recipe.find(recipe_id)
user = User.find(user_id)
if user.facebook_token
api = Koala::Facebook::API.new(user.facebook_token)
api.put_connections 'me', 'my_namespace:like', object: recipe_url(recipe)
end
end
end
When the recipe_url method is access, an ArgumentError is raised with the message:
ArgumentError: Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true
I know that I can specify default_url_options for ActionController or ActionMailer in the environment-specific config files, e.g.:
config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
config.action_controller.default_url_options = { host: 'localhost', port: 3000 }
However, these (rightfully) appear to have no influence on my Sidekiq worker classes. How should I go about defining default_url_options for these classes?
What we did was this:
In your config file(s) (e.g. config/application.rb, config/production.db, etc.), have a line that sets the default:
routes.default_url_options = { host: 'www.example.org' }
I found a potential solution to this, though it feels like a little bit of a hack. I'm definitely open to better answers.
First, in my environment files (e.g.: config/environments/development.rb), I specify the default_url_options for my controllers:
config.action_controller.default_url_options = { host: 'localhost', port: 3000 }
Then in my worker class, I define a default_url_options instance method there:
class Facebook::LikeRecipeWorker
# ...
private
def default_url_options
ActionController::Base.default_url_options
end
end
I would like to do something like this
config.default_host = 'www.subdomain.example.com'
in some of my configuration files, so that object_url helpers (ActionView::Helpers::UrlHelper) produce links beginning with http://www.subdomain.example.com
I have tried to search the docs but I did not find anything except ActionMailer docs and http://api.rubyonrails.org/classes/Rails/Configuration.html which is not useful for me, because I do not know in which pat to look. Is there a place which describes the whole structure of Rails::Initializer.config?
asset_host doesn't work for urls
You need to override default_url_options in your ApplicationController (at least in Rails 3)
http://edgeguides.rubyonrails.org/action_controller_overview.html#default-url-options
class ApplicationController < ActionController::Base
def default_url_options
if Rails.env.production?
{:host => "myproduction.com"}
else
{}
end
end
end
Define the default host in your environment config:
# config/environments/staging.rb
MyApp::Application.configure do
# ...
Rails.application.routes.default_url_options[:host] = 'preview.mydomain.com'
# ...
end
Then you can create a URL anywhere in your app:
Rails.application.routes.url_helpers.widgets_url()
Or include the URL helpers in your class:
class MyLib
include Rails.application.routes.url_helpers
def make_a_url
widgets_url
end
end
If you don't define the default host, you will need to pass it as an option:
widgets_url host: (Rails.env.staging? ? 'preview.mydomain.com' : 'www.mydomain.com')
It's also useful to specify things like the protocol:
widgets_url protocol: 'https'
Another way is to set it like this
# config/production.rb
config.action_controller.default_url_options = { host: 'myproduction.com' }
You can easily set :host or/and :only_path parameter for every url_helper.
yours_url(params, :host => "http://example.com", :only_path => Rails.env.test?)
This way you are not setting global default_url_options in your environments, unless you want that.
In Rails 6.1 (at least), application-wide default_url_options can be set as follows:
# config/environments/development.rb
Rails.application.default_url_options = { host: 'localhost', port: 3000 }
Rails.application.configure do
# ...
end
See: https://github.com/rails/rails/issues/29992#issuecomment-761892658
As far as I know, the *_url helpers use the server's configured host name. So for example if my Apache installation is accepting requests for this Rails app at http://www.myapp.com/ then Rails will use that address. That's why the *_url methods in a development environment point to http://localhost:3000 by default.
The asset host suggested in the previous answer will only affect the image_tag, stylesheet_link_tag and javascript_link_tag helpers.
NSD's solution is how I do it, but I had to add a block to make it work with https:
config.action_controller.asset_host = Proc.new { |source, request|
(request ? request.protocol : 'http://') + "www.subdomain.example.com"
}
There's this, but I'm not terribly sure if they're the helpers you're referring to:
ActionController::Base.asset_host = "assets.example.com"
http://api.rubyonrails.org/classes/ActionView/Helpers/AssetTagHelper.html