pass params to controller method via link_to rails 4

Question

I want to pass a params from a text_field_tag to my controller but it doesnt get passed via link_to

      <div class="row" id="page-search">
        <%= hidden_field_tag :page, params[:page], class: 'form-control', value: '1'%>
        <%= text_field_tag :page, params[:page], class: 'form-control', id: 'show-page'%>
        <%= link_to 'Go', currencies_path, :remote => true, method: :get, class: "btn btn-default", id: "show-button" %>
      </div>

controller method

      def index
        @currencies = Currency.all.page(params[:page]).per(10)
      end

It should call this method which it does but it doesnt pass the params[:page]. Any clue as to how to solve this issue?

Thanks

Based on suggestions, i did this but i am still facing the same issue as it doesnt pass the params

       <%= form_tag currencies_path, :method => :get do -%>
          <%= text_field_tag :page, params[:page], class: 'form-control', id: 'show-page'%>
          <%= hidden_field_tag :page, params[:page], class: 'form-control', value: '1'%>
          <%= submit_tag 'Go' %>
        <% end %>

Possible duplicate of [pass parameter by link\_to ruby on rails](http://stackoverflow.com/questions/1898737/pass-parameter-by-link-to-ruby-on-rails) — Bijendra, Feb 02 '16 at 12:22
@Bijendra its a different question. urs is based on passing object data. mine is based on pasing text_field_tag input — Kingsley Simon, Feb 02 '16 at 12:29

score 1 · Answer 1 · answered Feb 02 '16 at 12:20

1

Links are self-contained: they only care about what is in their own arguments.

If you want to submit params from fields on the page, then you need to wrap those fields in a form and submit the form.

If you want to put that data into the link then you can change the link_to thus:

    <%= link_to 'Go', currencies_path(page => 1), :remote => true, method: :get, class: "btn btn-default", id: "show-button" %>

answered Feb 02 '16 at 12:20

Max Williams

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i want to be based on text_field_tag input so the value of page cannot be static as u hv put it in. is there anyway to do it? if i do page => params[:page] will tht work – Kingsley Simon Feb 02 '16 at 12:23
Change it to a form. – Max Williams Feb 02 '16 at 12:24
i edited and changed to a form but still it doesnt submit – Kingsley Simon Feb 02 '16 at 12:26
Remember it's a remote form, so it won't *do* anything when you submit. You should post your log to show what's happening – Richard Peck Feb 02 '16 at 13:00
Have you replaced the link with a submit button? – Max Williams Feb 02 '16 at 13:33

Prashanth · Answer 2 · 2016-02-02T13:21:47.943

This will send the value that is input as part of the text field tag.

<%= form_tag currencies_path, :method => :get do %>
      <%= text_field_tag :page, nil, class: 'form-control', id: 'show-page'%>
      <%= submit_tag 'Go' %>
<% end %>

I am not sure why you set params[:page] as a value for text-field. Or am i missing something here?

In case you want to use the params[:page], set it to a variable in the action,

@page_number = params[:page]

The html should be changed to,

<%= text_field_tag :page, @page_number, class: 'form-control', id: 'show-page'%>

score 0 · Answer 3 · answered Feb 02 '16 at 13:07

0

I don't advocate submitting the same value for both hidden and text fields:

<%= form_tag currencies_path, method: :get do %>
   <%= text_field_tag :page, params[:page], class: 'form-control', id: 'show-page'
   <%= submit_tag "Go" %>
<% end %>

You must remember, your current form uses remote: true, which is the ajax wrapper for Rails UJS. Thus, if you want to check what happens, you need to make sure you've removed remote: true from the form declaration.

--

If you wanted to set the value statically (IE the user cannot change), you'll want to look at button_to, as this can pass params through a hidden field:

<%= button_to "Go", currencies_path, method: :get, params: { page: "1" } %>

The problem with this is that you cannot change the page in the view (the value you assign in the params hash will be static).

answered Feb 02 '16 at 13:07

Richard Peck

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A remote form will still submit, it will just do it via an ajax call. It looks prettty much the same in the log, except for the response. – Max Williams Feb 02 '16 at 13:33
Yep, that's what I meant. The OP said that "nothing was happening" / "won't submit" - was just alluding to the fact that remote will make it appear that nothing would appear unless the response was caught. – Richard Peck Feb 02 '16 at 13:35
ah i see. :) OP: watch your log file. – Max Williams Feb 02 '16 at 13:36
1

ur suggestions were right, my implementation was wrong, it works now – Kingsley Simon Feb 03 '16 at 02:57

pass params to controller method via link_to rails 4

3 Answers3