Setting a controller action inside link_to - ruby-on-rails

Question

I need help with allowing users to click "Follow/Unfollow" link and have the action take place on the user show page. Currently I have the action sitting inside a popup and I don't know how I can set it inside a link action so there would be no need for a popup.
I tried rendering the forms on the show page but that does not show as I expected.
show.html.slim:
- if current_user.following?(#user)
= link_to follow_popup_user_path(#user), class: 'profile_btn save_btn', :'data-mfp-src'=>'#follow_div', remote: true do
= image_tag 'start_icon.png'
span Unfollow
- else
= link_to follow_popup_user_path(#user), class: 'profile_btn save_btn', :'data-mfp-src'=>'#follow_div', remote: true do
= image_tag 'start_icon.png'
_follow.html.slim:
= form_for(current_user.relationships.build(followed_id: #user.id)) do |f|
div
= f.hidden_field :followed_id
= f.submit "Follow", class: "btn btn-large btn-primary"
_unfollow.html.slim:
= form_for(current_user.relationships.find_by(followed_id: #user),
html: { method: :delete }) do |f|
= f.submit "Unfollow", class: "btn btn-large"
Relationships controller:
def create
#user = User.find(params[:relationship] [:followed_id] )
current_user.follow!(#user)
redirect_to #user
end
def destroy
#user = Relationship.find(params[:id]).followed
current_user.unfollow!(#user)
redirect_to #user
end
end

Answer 1

You shouldn't need a form for this, just pass the correct params to a nested route for relationships, then handle the specifics in the user model follow and unfollow methods. Try something like this:
users/show.slim
- if current_user.following?(#user)
= link_to new_user_relationship_path(id: current_user.id, followed_id: #user.id), class: 'profile_btn save_btn' do
= image_tag 'start_icon.png'
span Unfollow
- else
= link_to user_relationship_path(id: current_user.id, followed_id: #user.id), method: delete, class: 'profile_btn save_btn' do
= image_tag 'start_icon.png'
routes
resources :users do
resources :relationships
relationships_controller
def create
#user = User.find(user_params(:id))
#followed_user = User.find(user_params(:followed_id))
#user.follow #followed_user
redirect_to #user
end
def destroy
#user = User.find(user_params(:id))
#followed_user = User.find(user_params(:followed_id))
#user.unfollow #followed_user
redirect_to #user
end
private
def user_params
params.require(:user).permit(:followed_id, )
end