Rails form fields empty after submitting form

Question

This is my form:

<%= form_tag("/adverts", :method => "get") do %>
Order by: 
<%= select_tag :order_by, options_for_select([['Ascending', 'ASC'], ['Descending', 'DESC']])%>

<%= text_field_tag :text%>

<%= submit_tag 'Change' %>
<% end %>

In my Adverts controller, index method, for now I am not doing anything and I can see that it is getting correct values from form,

=>but when page reloads after submission, fields values are empty but I want them to retain values.

So if I enter some text in text field, that text will still be there after submitting form .

Did you look at the API for options_for_select and text_field_tag? That's where you can find the answer to your question. — Mischa
– Mischa, Commented May 23, 2013 at 10:50

Mischa · Accepted Answer · 2013-05-23 10:57:40Z

5

Like this:

<%= select_tag :order_by, options_for_select([['Ascending', 'ASC'], ['Descending', 'DESC']], params[:order_by]) %>

and:

<%= text_field_tag :text, params[:text] %>

See the API for options_for_select and text_field_tag.

answered May 23, 2013 at 10:57

Mischa

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1 Comment

Matt Over a year ago

A more appropriate answer than mine.

Matt · Accepted Answer · 2013-05-23 10:52:15Z

1

You need to create the form for an object if you want it to automatically get the objects values on reload.

<%= form_for @object do |form| %>
  <%= form.text_field :name %> <!-- automatically gets re-populated with the value of @object on postback -->
  <%= form.submit %>
<% end %>

If you really want to use form tags instead of a builder then you need to set the values manually after postback

<%= text_field_tag :text, some_string_value %>

answered May 23, 2013 at 10:52

Matt

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1 Comment

Matt Over a year ago

@Mischa I only said it needs an object if OP wants it to re-populate automatically, which is true. Using form tags requires manually re-populating the values, as I also explain in the answer. Your answer is more direct so I'll upvote that one, but leave my answer for additional context.

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