CODEWITHSUNDEEP
ruby-on-rails
user1977840
user1977840

Reputation:

Check box :checked by condition

I have a check box and I want the checkbox to be checked if a parameter equals 1. So I need the :checked to only be true if the condition is true. 

<%= check_box_tag 'catalog_image', 1, :onclick => 'this.form.submit()', :checked => (params[:catalog_image] == 1)%>

The current condition I am testing does not work. The param will automatically be added, or subtracted, when the form submits because it is linked back to the same page.

Upvotes: 4

Views: 10543

Answers (2)

Christian Rojas
Christian Rojas

Reputation: 326

The API say: Rails check_box_tag

check_box_tag(name, value = "1", checked = false, options = {}) public

So you can improve this in one single line:

<%= check_box_tag 'catalog_image', 1, <CONDITION>, :onclick => 'this.form.submit()' %>

Upvotes: 5

Matzi
Matzi

Reputation: 13925

Use if to this, because the presence of the :checked tag that matters, not it's value

<% if params[:catalog_image] == 1 %>
   <%= check_box_tag 'catalog_image', 1, :onclick => 'this.form.submit()', :checked =>true %>
<% else %>
   <%= check_box_tag 'catalog_image', 1, :onclick => 'this.form.submit()'%>
<% end %>

Upvotes: 4

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