When resetting password, update function stops working in rails - ruby-on-rails

Question

Here is my code:
password_resets_controller.rb
class PasswordResetsController < ApplicationController
before_action :get_user, only: [:edit, :update]
before_action :valid_user, only: [:edit, :update]
before_action :check_expiration, only: [:edit, :update]
def new
end
def create
# #user = User.find_by(email: params[:password_resets] [:email].downcase)
#user = User.find_by(email: params[:password_reset][:email].downcase)
if #user
#user.create_reset_digest
#user.send_password_reset_email
flash[:info] = "Email sent with password reset instructions"
redirect_to root_url
else
flash.now[:danger] = "Email address not found"
render 'new'
end
end
def edit
end
def update
if params[:member][:password].empty?
#user.errors.add(:password, "Can't be empty")
render 'edit'
elsif #user.update_attributes(user_params)
# log_in #user
flash[:success] = "Password has been reset."
redirect_to #user
else
render 'edit'
end
end
private
def user_params
params.require(:member).permit(:password, :password_confirmation)
end
def get_user
#user = User.find_by(email: params[:email])
end
# Confirms a valid user.
def valid_user
unless #user
redirect_to root_url
end
end
# Check expiration of reset token.
def check_expiration
if #user.password_reset_expired?
flash[:danger] = "Password reset has expired."
redirect_to new_password_reset_url
end
end
end
Thr situation is after I enter the path of password reset token, I put the new password and password_confirmation. Then I click update. However, this error page shows. I really don't know how to figure this out.
Here is my edit file:
<div class="row">
<div class="col-md-6 col-md-offset-3">
<%= form_for(#user, url: password_reset_path(params[:id])) do |f| %>
<%= render 'shared/error_messages' %>
<%= hidden_field_tag :email, #user.email %>
<%= f.label :password %>
<%= f.password_field :password, class: 'form-control' %>
<%= f.label :password_confirmation, "Confirmation" %>
<%= f.password_field :password_confirmation, class: 'form-control' %>
<%= f.submit "Update password", class: "btn btn-primary" %>
<% end %>
</div>
Here is the log:
Here is my User table:
Here is the log after change password_reset_path(params[:id]) to password_reset_path(#user)

Answer 1

The problem is because your form sends member key instead of user, as your logs show:
Parameters: {
"utf8"=>"✓",
"authenticity_token"=>"...",
"email"=>"naomi.wuuu#gamil.com",
"member"=>{
"password"=>"[FILTERED]",
"password_confirmation"=>"[FILTERED]"
},
...
}
So, since there is no user key, params[:user] returns nil and, since it can't respond to [], results in the error:
undefined method `[]' for nil:NilClass
Looking at your controller and view I can't see why member is being used instead of user, but you can force your form to send user key using as: "user", like this:
<%= form_for(#user, url: password_reset_path(params[:id]), as: "user") do |f| %>
With this in place, your parameters will be now:
Parameters: {
"utf8"=>"✓",
"authenticity_token"=>"...",
"email"=>"naomi.wuuu#gamil.com",
"user"=>{
"password"=>"[FILTERED]",
"password_confirmation"=>"[FILTERED]"
},
...
}