CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-6
Carlos Vergara
Carlos Vergara

Reputation: 55

Can't see a variable from a controller on a view - Rails 6

My name is Carlos, I'm writing and I'm new on Rails 6.

I'm working on my app trying to show a variable, got from a form, on a view but I can't see it.

I'm using form_with sending the params(without model) to an URL of a Controller.

Form on Meteo View (app\views\meteo\form.html.erb):

Sending the params ":condition_met" to "briefing show controller URL":

<div class="form-group text-center">
    <%= form_with url: briefing_show_path, id: "met" do |fo| %>
        <div class="field">
           <%= fo.label "Condición Actual" %><br>     
           <%= fo.text_area(:condition_met) %>
        </div>
           <%= fo.submit "Enviar" %>
    <% end %>
</div>

Briefing Controller (app\controllers\briefing_controller.rb):

Trying to save the value of "[:condition_met]" on "@condition_met":

def show
  if params.has_key?(:condition_met)
     @condition_met = params[:condition_met]
  end
end

Briefing show view (app\views\briefing\show.html.erb):

Trying to show the value of "[:condition_met]" on the view:

<div>
 <%= "#{@condition_met} " %>
</div>

The console actually shows that the Hash was sent to the URL when I click on the submit button:

Started POST "/briefing/show" for 127.0.0.1 at 2020-02-22 10:24:42 -0300
Processing by B**riefingController#show** as JS
  **Parameters: {"condition_met"=>"Test"**, "commit"=>"Enviar"}
User Load (0.1ms)  SELECT "users".* FROM "users" WHERE "users"."id" = ? ORDER BY "users"."id" ASC LIMIT ?  [["id", 5], ["LIMIT", 1]]
  ↳ app/controllers/briefing_controller.rb:4:in `show'
  Rendering briefing/show.html.erb within layouts/application
  Rendered briefing/show.html.erb within layouts/application (Duration: 1.1ms | Allocations: 211)
[Webpacker] Everything's up-to-date. Nothing to do
  Rendered partials/_nav.html.erb (Duration: 2.7ms | Allocations: 5906)
Completed 200 OK in 68ms (Views: 64.3ms | ActiveRecord: 0.1ms | Allocations: 25974)

Nothing is shown on the view whith: <%= "#{@condition_met} " %>.

I tried some solutions on the web but nothing worked.

Regards!

UPADTE:

This is my route.rb:

  get "meteo", to:"meteo#show"
  get "meteo/form", to:"meteo#form"
  post "meteo/form", to:"meteo#form"

  get 'briefing/index'
  get 'briefing/show'
  post "briefing/show", to:"briefing#show"

I used the browser inspector and I saw that when the POST is made the inspector shows the variable in the answer but when I go to the view page it's not shown:

POST

If I use <%= @condition_met.inspect %> I get "nil"

Upvotes: 4

Views: 541

Answers (1)

Rajdeep Singh
Rajdeep Singh

Reputation: 17834

form_with is by default ajax request that you are not handling in show action, add local: true to solve the issue

<%= form_with url: briefing_show_path, local: true, id: 'met' do |fo| %>

Give it a try.

Upvotes: 3

Related Questions