Question

I am trying to accomplish something like this:

I am creating a simple blog. I have set up categories for my blog.
I want that when my user goes to posts/index, he sees a list of all categories.

Example:
Text
Image

Upon clicking on a category, my user gets redirected to the posts/new page, where the category_id field will by transmitted through a hidden_field.

So my code right now is:

in posts/index

<% @categories.each do |c| %> 
  <%= link_to c.name, new_post_path(:category => c.id) %><br />
<% end %>

and in my posts/_form i’m trying to do something like this

<%= f.hidden_field :category_id, :value => params[:category_id] %>

which is not working though, because the html output is

No value is being passed.

What is the correct way to proceed here?
Thx!

Answer 1

At first glance it looks like a simple mistake mixing up the param names category and category_id.

Try this:

<% @categories.each do |c| %> 
  <%= link_to c.name, new_post_path(:category_id => c.id) %><br />
<% end %>