CODEWITHSUNDEEP
ruby-on-railsruby
Lewy Blue
Lewy Blue

Reputation: 618

Click a href to change a variable in Rails

I have generated a "Talks" scaffold for a yearly conference. Each talk consists of a name, title and the year it occurred.

I want to display only the talks from one specific year at a time.

In the app/views/talks/index.html.erb file I can do this with:

<% @year = 1978 %>
<% @talks.where(:year => @year).each do |talk| %>

Which will then list only talks from 1978.

I am also listing the years in which talks occurred in the sidebar (same file) using:

<ul>
<% Talk.uniq.pluck(:year).each do |year| %>
<li><a href="" ><%= year %></a></li>
</ul>

Which gives a list of years like:

I want the user to be able click on a year to show only talks from that year.

Is there a way to set the @talks variable via the url?

Something like:

<li><a href="/talks?year=1978" ><%= year %></a></li>

Or is there a better approach?

Upvotes: 0

Views: 698

Answers (1)

Jonathan Vukovich-Tribouharet
Jonathan Vukovich-Tribouharet

Reputation: 1988

In your controller:

def index
    @year = params[:year].to_i
    @year = 1978 if year < 1978
    @talks = Talk.where(:year => @year).to_a
end

Remove <% @year = 1978 %> in your view.

Replace <% @talks.where(:year => @year).each do |talk| %> by <% @talks.each do |talk| %>

Upvotes: 1

Related Questions