CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3
Catfish
Catfish

Reputation: 19294

Rails how to get query string from get action in post action?

I have a url like this http://example.com/myController?key=12345

In my controller myController, i can access the key value with params[:key], but when i submit a form, i want to get that same key in the create method, but the params[:key] is null.

How can i access params[:key] in my post action create?

Upvotes: 1

Views: 1004

Answers (4)

moritz
moritz

Reputation: 25757

You might indeed add a hidden field.

If you find yourself adding many of those because you need to have the value available in more and more actions, consider setting it within the session as (e.g.) session[:current_key]

Upvotes: 2

Muhamamd Awais
Muhamamd Awais

Reputation: 2385

Add a new hidden field to pass via params, when you submit the form your action is changed or called again params hash is recreated; what you can do is pass the value via hidden field in the form as follow,

<%= simple_form_for @model do |f| %>
  # your remaining form fields
  <%= f.input :field_name, as: :hidden, :input_html: { value: params[:key] } %>
  <%= f.button :submit %>
<% end %>

Upvotes: 1

jameswilliamiii
jameswilliamiii

Reputation: 878

You can pass the info along by a hidden_field_tag. So your code would be like:

<%= form_for @model do |f| %>
    <%= hidden_field_tag 'key', params[:key]
    # other form code
    <%= f.submit %>
<% end %>

Upvotes: 1

Marcelo De Polli
Marcelo De Polli

Reputation: 29291

You can add a hidden field to your form and set its value to params[:key]. Then it will be available in the params you get from the form.

If you're using Simple Form:

<%= simple_form_for @model do |f| %>
  ...
  <%= f.input :field_name, :as => :hidden, :input_html => { :value => params[:key] } %>
  <%= f.button :submit %>
<% end %>

Upvotes: 1

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