Undefined Method `stringify_keys' for Model's Show Page - ruby-on-rails

Question

In trying to access the show view for one of my models workouts#show I have been getting an error that says:
undefined method `stringify_keys' for "/workouts/abs-0002":String
It's calling it on a link in a _template.html.erb, which is being rendered in my workouts#show page (error called on the first line):
<%= link_to "Do this one!", workout_path(workout) do %>
<p class="cta">Pick me!</p>
<% end %>
My workouts controller is:
class WorkoutsController < ApplicationController
def index
#workouts = Workout.all
end
def show
#workout = Workout.friendly.find(params[:id])
#exercise = Exercise.new
#report = Report.new
end
def new
#workout = Workout.new
#workout.user_id = current_user
end
def create
#workout = Workout.new(workout_params)
#workout.user = current_user
if #workout.save
flash[:notice] = "Workout was saved successfully."
redirect_to #workout
else
flash.now[:alert] = "Error creating workout. Please try again."
render :new
end
end
def edit
#workout = Workout.friendly.find(params[:id])
#workout.user_id = current_user
end
def update
#workout = Workout.friendly.find(params[:id])
#workout.name = params[:workout][:name]
#workout.workout_type = params[:workout][:workout_type]
#workout.teaser = params[:workout][:teaser]
#workout.description = params[:workout][:description]
#workout.video = params[:workout][:video]
#workout.difficulty = params[:workout][:difficulty]
#workout.trainer = params[:workout][:trainer]
#workout.user_id = params[:workout][:user_id]
if #workout.save
flash[:notice] = "Workout was updated successfully."
redirect_to #workout
else
flash.now[:alert] = "Error saving workout. Please try again."
render :edit
end
end
def destroy
#workout = Workout.friendly.find(params[:id])
if #workout.destroy
flash[:notice] = "\"#{#workout.name}\" was deleted successfully."
redirect_to action: :index
else
flash.now[:alert] = "There was an error deleting the workout."
render :show
end
end
private
def workout_params
params.require(:workout).permit(:name, :workout_type, :teaser, :description, :video, :difficulty, :trainer, :user_id)
end
end
And my workout.rb model is:
class Workout < ActiveRecord::Base
extend FriendlyId
friendly_id :name, use: :slugged
belongs_to :user
has_many :exercises
has_many :reports
validates :user, presence: true
end
Can anyone help me see what's going wrong here?

Answer 1

according to http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to, you need to remove the first param if you want to use a custom name for the link:
You can use a block as well if your link target is hard to fit into the name parameter. ERB example:
<%= link_to(#profile) do %>
<strong><%= #profile.name %></strong> -- <span>Check it out!</span>
<% end %>
# =>
<a href="/profiles/1">
<strong>David</strong> -- <span>Check it out!</span>
</a>