In my header page app.html.eex I have this link:
<%= gettext "English" %>
If a user is on any other path other than the root / , the user will be redirected to the root path, obviously because I send them there with ... Routes.page_path(#conn, :index ... .
So how can I form a link where it sends the user to the page he is on but with the parameter locale: "en" as I am processing this parameter in a browser plug and setting it as a language cookie and then return the user to the page the user was on.
Something like this:
<%= Routes.go(#conn.current_path, locale:"en")
The only way I know to make this happen requires you write the query string yourself (instead of passing a map, which is nicer). It looks like this:
<%= gettext "English" %>
This link will take you to the same page but you will only have the locale=en query params (any other ones will be gone). That, is you will only have %{"locale" => "en"} for your #conn.query_params.
If you want to investigate further yourself, you should try to understand the source code for the router helpers. It lives in $PROJECT/deps/phoenix/lib/phoenix/router/helpers.ex. I find this code very hard to understand. The unquote magic is new to me.
Related
I'm writing what is currently a very inelegant program to generate fitness plans, and have an issue with the routing. I want buttons on my index page linking to certain bodyparts and a plan generator, and the pages themselves are working when I navigate to them directly. However, the buttons on my index view won't work, kicking out a routing error: 'No route matches [POST] "/exercises/index"'.
For example, dropping the URL for '/exercises/legs' or '/exercises/generator' into my browser loads the page as it should be, though <%= button_to "Legs", 'exercises/legs' %> (as well as redirecting to exercises_legs_path and every other option I've thought of) gives the error.
Sure this is something pretty straightforward I'm missing (very new to this), and any advice would be great!
The database currently contains columns for the :id, ':move' (i.e. press up) and ':bodypart' (i.e. legs).
Here are my routes:
Helper HTTP Verb Path Controller#Action
GET /exercises/:bodypart(.:format) exercises#bodypart
exercises_generator_path GET /exercises/generator(.:format) exercises#generator
exercises_index_path GET /exercises/index(.:format) exercises#index
root_path GET / exercises#index
exercises_path GET /exercises(.:format) exercises#index
POST /exercises(.:format) exercises#create
new_exercise_path GET /exercises/new(.:format) exercises#new
edit_exercise_path GET /exercises/:id/edit(.:format) exercises#edit
exercise_path GET /exercises/:id(.:format) exercises#show
PATCH /exercises/:id(.:format) exercises#update
PUT /exercises/:id(.:format) exercises#update
DELETE /exercises/:id(.:format) exercises#destroy
And my routes.rb file:
Rails.application.routes.draw do
get '/exercises/:bodypart', to: 'exercises#bodypart'
get '/exercises/generator', to: 'exercises#generator'
get 'exercises/index'
root :to => 'exercises#index'
resources :exercises
end
Thanks in advance, and let me know if there's anything else I've got that would help with this.
Rails.application.routes.draw do
get '/exercises/:bodypart', to: 'exercises#bodypart', as: 'exercises_bodypart'
get '/exercises/generator', to: 'exercises#generator'
get 'exercises/index'
root :to => 'exercises#index'
resources :exercises
end
instead of
Rails.application.routes.draw do
get '/exercises/:bodypart', to: 'exercises#bodypart'
get '/exercises/generator', to: 'exercises#generator'
get 'exercises/index'
root :to => 'exercises#index'
resources :exercises
end
Usage:
exercises_bodypart_path('legs')
Let's say I have a Ruby files structure like this:
app.rb
/views/index.erb
/views/layout.erb
app.rb is the main app file that contains the routes. Let's say I have one route as this:
get "/" do
erb :index
end
In layout.erb I have my html head and closing </body> and </html> and etc. It is also where I have <head>..</head> and where I can put that scope for some JavaScript methods.
Let's say now that I have my Ruby logic in index.erb. I get a value somehow from my logic (index.erb) and I want to pass that value to my layout.erb. Is it possible? If so, how we do that?
I have checked the #variable_name to pass it as argument from the route definition:
get "/" do
#variable_name = ??? -> this do not works since I did not get the logic yet from index.erb, no?
erb :index
end
I also have tried to use simply <%= variable_name %> or #{variable_name} directly in the layout.erb but without any success.
I actually found out that I was able to transport my "code" to view the widgets I wanted to populated in the index.erb so by that I resolve my problem of accessing the value that was define from a variable declared in index.erb.
Problem solved and a better way to work with Ruby as this issue makes me read more about how to structure myself (Thx to Dave).
So I'm a bit of a Rails n00b, so I'll apologize if this is really simple. When I access my server from another computer, I get this message:
No route matches [GET] "/"
And if I try to go to my subpages (Well, currently I only have one), I get something along these lines:
Unknown action
The action 'index' could not be found for AwebpageController
But here's the catch: this only happens sometimes. The rest of the time, the standard RoR homepage loads, and going to wwww.mydomain.com/awebpage serves up the page fine.
My Routes.rb looks like this:
Wobsite::Application.routes.draw do
resources :awebpage
end
And awebpage_controller.rb looks like this:
class AwebpageController < ApplicationController
end
And yes, index.html.erb for Awebpage does exist. It's all so simple that I don't understand what's going wrong. Oh, and my webserver is Thin (Not sure if that matters). Thanks in advance for any help!
You might want to add this to the top of your routes file to set the default controller and page for your site (i.e. http://www.mysite.com/):
root :to => "AwebpageController#index"
To remove the default Ruby on Rails webpage you'll also want to delete the index.html file in your /public/ directory.
Also, although not required, in your controller you're missing the function definition for index.
class AwebpageController < ApplicationController
def index
end
end
Normally you'd do application logic and serve up a view in this function; however if you do nothing RoR automatically loads the view associated with the page (index.html.erb).
If after all this you're still having a problem perhaps explicitly add index to the AwebpageController in your routes file; perhaps rails is only mapping www.mysite.com/Awebpage/ to Awebpage/index and not www.mysite.com/Awebpage/index.
Im working with Rails 3.0.9 and Ruby 1.9.2.
I have a search page that will display a list of results in grid format. However, I want to be able to give the user an option to display them in list format.
Could anyone please advise me about how I can offer a change view option,and still keep the search results?
As you have not specified where query is stored,
I will hope that in url, like example.com/search?query=mylookupstring
So in this case all we need is to place somewhere on a page, link_to search path and pass your query + some parameter back to controller to prepare new view
<%= link_to "List", search_some_thing_path(:query=>params[:query],:list=>true) %>
nice & easy
Post your details if i show bad skills with telepathy today.
UPDATE:
Pay attention to params & url. Yours & my example. You shouldn't just copy
as your controller expects params[:search] not params[:query]
So fix error in you link_to & move_on!
PS Great tip to find out how rails really work is to use debugger.
You may attach it in view
<% debugger %> or in model/controller simply debugger
Don't forget to include debug gems in your Gemfile, smth like
group :development, :test do
gem 'ruby-debug19'
end
i have some model, let it be Post with field :content. Any user can submit post with html (with links of course:) ) and i'd like to set nofollow on those links. Is there any rails plugin to automate this task? Does this plugin have ability to manage "nofollowing" in conditional way - e.g. admin can add links without nofollow, but other - with only nofollow?
This should do what you're looking for: https://github.com/rgrove/sanitize/
Install the plugin, then for a block of text you can run:
<%=raw Sanitize.clean(#your_html, Sanitize::Config::BASIC) %>
There are other options that you can use to customise it, but the Config::BASIC version will detect all links in that block of text and add the nofollow tag to them.
You can define a helper for this, overriding (or rather wrapping) the default link_to
In app/helpers/posts_helper.rb do something along the lines of:
def nf_link_to(link_text, post)
opts = {}
opts[:rel] = "nofollow" unless post.author == "admin"
return link_to text, post, opts
end
So that in your view you can do:
<%= nf_link_to post.title, post %>
Which should result in:
My First[tm] Post
You should have a good look at the actual implementation of link_to and make your ''nf_link_to'' as complex as (as in; passing arguments and perhaps a block) as you desire.