javascript - Passing a the variable to my erb code -


in ruby on rails application have view lists recods.

i have filters on page javascript onclick events on them retrieve ids , filters records on page.

the ids of buttons clicked stored in javascript variable 

var selected = [];

in index.html.erb use value of selected[] array retrieve data database , filter index page.

i saw in other posts cannot pass javascript variables erb code since the latter executed in server.

how pass selected ids erb function using ajax or way?

    <% post.recent(**selected**).each |post| %>        .....     <% end %>

the way can think of submitting form selected part of params hash, , suppose it.

for example

<input type='hidden' value="selected['cool', 'fun', 'happy', 'ruby']" />

this accessible in controller params[:selected], , there make instance variable in

@selected = params[:selected]

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