I display an array of hours in a dropdown field
[["09:30am", "2013-02-14 09:30:00"], ["10:00am", "2013-02-14 10:00:00"] ...
I render the array with:
<%= f.select :atime, #time_options %>
I assign the values of the array to the instance variable in the controller
def new
#time_options = Appointment.time_options
#doctor = Doctor.find(params[:doctor_id])
#appointment = #doctor.schedule.appointments.build
end
# GET /appointments/1/edit
def edit
#time_options = Appointment.time_options
#doctor = Doctor.find(params[:doctor_id])
#appointment = #doctor.appointments.find(params[:id])
end
# POST /appointments
# POST /appointments.json
def create
#time_options = Appointment.time_options
#doctor = Doctor.find(params[:doctor_id])
#appointment = #doctor.schedule.appointments.new(params[:appointment])
if #appointment.save
#send email
AppointmentMailer.appointment_confirmation(#appointment, I18n.locale).deliver
AppointmentMailer.new_appointment(#appointment, I18n.locale).deliver
redirect_to :action => 'thank_you'
else
render action: 'new'
end
end
And in the model I have defined a class method to build the array
def self.time_options
start_of_day = Time.zone.now.beginning_of_day
start_time = start_of_day + 9.hours
end_time = start_of_day + 17.hours
lunch_start = start_of_day + 13.hours
lunch_end = start_of_day + 14.hours + 30.minutes
times = []
until start_time > end_time
start_time = (start_time + 30.minutes)
unless start_time >= lunch_start && start_time < lunch_end
times << start_time
end
end
times.map{|t| [t.strftime("%I:%M%p").downcase, t.to_s(:db)] }
end
However when I submit the form, i get a undefined methodempty?' for nil:NilClass` error on:
<%= f.select :atime, #time_options %>
What I'm doing wrong?
This
<%= f.select :atime, #time_options %>
should be like this
<%= f.select :atime_id, #time_options %>
In the create method, start with the #doctor and go down the chain: schedule, then params[:appointment], until you find the nil, then figure out why it's nil. Rails.logger or pry if you're running rails s will be your friend.
Related
wrong number of arguments (given 2, expected 1)
SportsController
class SportsController < ApplicationController
def index
#sport = Sport.all
#events, #errors = Bapi::Inplay.all(query)
end
private
def query
params[:query, {}]
end
end
Sport index.html.erb
<% #sports.each do |sport| %>
<% #events(:sport_id => sport.id).each_slice(2) do |events| %>
I want send each sport.id to #enevts instance variable
Edited :
When send query as hash in SportsController its work!!
class SportsController < ApplicationController
def index
#sport = Sport.all
query = {:sport_id => 1}
#events, #errors = Bapi::Inplay.all(query)
end
private
def query
params[:query, {}]
end
end
Index.html.erb
<% #sports.each do |sport| %>
<% #events.each_slice(2) do |events| %>
params is a hash and method :[] can accept only 1 argument.
def query
params[:query] || {} # Will return :query part or empty Hash if it has nothing
end
I get this error and for the life of me I can't figure out why. Help would be appreciated. :
error 3: error displayed after changes
error 4: after User.all.each do |user|
Error: Undefined method 'each' for nil: nilClass
my ruby/haml code is as follows
viewer code:
-# This file is app/views/projects/index.html.haml
%h1 All Project Tasks
= form_tag projects_path, :method => :get do
Include:
- #all_users.each do |user|
= user
= check_box_tag "users[#{user}]", 1, ("checked" if #filtered_users.find_index(user))
= submit_tag 'Refresh', :id => "users_submit"
%table#projects
%thead
%tr
%th{:class => ("hilite" if params[:sort] == "title")}= link_to "Title", {:controller => "projects", :sort => "title", :filter => #filtered_users.to_s}, :id => "title_header"
%th Task Details
%th Assigned Usertimot
%th{:class => ("hilite" if params[:sort] == "due_date")}= link_to "Due Date", {:controller => "projects", :sort => "due_date", :filter => #filtered_users.to_s}, :id => "due_date_header"
%tbody
- #projects.each do |project|
%tr
%td= project.title
%td= link_to "More about #{project.title}", project_path(project)
%td= project.user
%td= project.due_date.to_formatted_s(:long)
= link_to 'Add new project task', new_project_path
controller code:
class ProjectsController < ApplicationController
def show
id = params[:id] # retrieve project task ID from URI route
#project = Project.find(id) # look up project task by unique ID
# will render app/views/projects/show.<extension> by default
def index
#projects_users = Project.all_users
# remembered settings
if (params[:filter] == nil and params[:users] == nil and params[:sort] == nil and
(session[:filter] != nil or session[:users] != nil or session[:sort] != nil))
if (params[:filter] == nil and session[:filter] != nil)
params[:filter] = session[:filter]
end
if (params[:sort] == nil and session[:sort] != nil)
params[:sort] = session[:sort]
end
redirect_to projects_path(:filter => params[:filter], :sort => params[:sort], :users => params[:users])
else
if (params[:filter] != nil and params[:filter] != "[]")
#filtered_users = params[:filter].scan(/[\w-]+/)
session[:filter] = params[:filter]
else
#filtered_users = params[:users] ? params[:users].keys : []
session[:filter] = params[:users] ? params[:users].keys.to_s : nil
end
end
session[:sort] = params[:sort]
session[:users] = params[:users]
if (params[:sort] == "title")
if ( params[:users]or params[:filter] )
#projects = Project.find(:all, :order => "title")
end
end
if (params[:sort] == "due_date")
if ( params[:users]or params[:filter] )
#projects = Project.find(:all, :order => "due_date")
end
if (params[:sort] == nill)
if(params[:users] or params[:filter])
#projects = Project.all
end
end
end
end
def new
# default: render 'new' template
end
def create
#project = Project.create!(project_params)
flash[:notice] = "#{#project.title} was successfully created."
redirect_to projects_path
end
def edit
#project = Project.find params[:id]
end
def update
#project = Project.find params[:id]
#project.update_attributes!(project_params)
flash[:notice] = "#{#project.title} was successfully updated."
redirect_to project_path(#project)
end
def destroy
#project = Project.find(params[:id])
#project.destroy
flash[:notice] = "Project '#{#project.title}' deleted."
redirect_to projects_path
end
private
def project_params
params.require(:project).permit(:title, :description, :extended_description, :user, :due_date)
end
end
end
i understand that the spacing for haml may be a little off, just the nature of trying to format the code block thanks in advance!
viewer code:
class Project < ActiveRecord::Base
def self.all_users
allUsers = []
Project.all.each do |project|
if (allUsers.find_index(project.user) == nil)
allUsers.push(project.user)
end
end
return allUsers
end
end
You are probably getting the error on this line in your view:
#all_users.each do |user|
The reason for the error as I see it is that you don't have #all_users instantiated anywhere in your controller's index action method.
First switch #all_users to #projects_users. Also it appears that your all_users method in project.rb is overly complex and is returning nil. Try modifying project.rb to the following:
class Project < ActiveRecord::Base
def self.all_users
all.includes(:user).map(&:user).uniq
end
end
Undefined method 'each' for nil: nilClass
This error basically means you don't have any data in your variable.
In other languages, it would mean you've not delcared the variable. Because Ruby is object orientated, it will populate the variable with the nilClass class.
Many new Ruby devs are thrown by the "undefined method" exception message; it's the nilClass you have to look out for.
--
To explain the error properly, because Ruby is object orientated, every variable is actually a data object, represented by a class. In Rails, you can define these classes as models (User.find etc).
Unlike other languages, Ruby treats these objects as is -- it uses methods on them. Other languages fit data into functions, E.G PHP's each function:
#PHP
<$ each($people) $>
#Ruby
<% #people.each do |person| %>
Thus, the "no method" error basically means that Ruby cannot find the method you're calling on the nilClass. It throws developers because they think that "I have the x method on the User class", not realizing that the variable has been populated by the nilClass instead.
The short of it is that you have to either make your calls conditional, or populate the variable properly.
The error appears to be here:
#app/views/project/index.html.haml
#all_users.each do |user|
#app/controllers/projects_controller.rb
class ProjectsController < ApplicationController
def index
#projects_users = Project.all_users
end
end
You're not assigning #all_users at all
You're using an inefficient way to get "all users"
Here's what I'd do:
#app/controllers/projects_controller.rb
class ProjectsController < ApplicationController
def index
#users = Project.all_users
end
end
#app/models/project.rb
class Project < ActiveRecord::Base
scope :all_users, -> { joins(:users) } #-> this needs to be tested
end
#app/views/projects/index.haml
- #users.each do |user|
= user.name
I am pretty inexperienced with pure SQL, you'll be best referring to the joins documentation for a clearer perspective.
I've got a simple search form, in rails 4 app, that needs two params passed to be able to show relevant data.
I'm getting an 'Mysql2::Error: Unknown column 'data inputted' but the columns do exist. If I instead of '#search = Page.where(params[:one] && params[:two])' use '#search = Page.all' the data shows, but all of it shows.
Form
<%= form_tag(page_show_path, id: "search-form") do %>
<%= text_field_tag :one, params[:one], placeholder: "One" %>
<%= text_field_tag :two, params[:two], placeholder: "Two" %>
<%= submit_tag "Search", :name => nil %>
<% end %>
Model
def self.one(query)
where("one = ?", "%#{query}%")
end
def self.two(query)
where("two = ?", "%#{query}%")
end
Controller
def show
if (params[:one] && params[:two]).present?
#search = Page.where(params[:one] && params[:two])
else
redirect_to page_path, notice: "Not a valid combination"
end
end
You can Create and Use Scope.
scope :find_one_two, ->(query_one, query_two) { where("one = ? AND two = ? ", query_one, query_two) }
#search = Page.find_one_two(params[:one], params[:two])
OR
You can use.
#search = Page.where("one = ? AND two = ?", params[:one], params[:two])
def show
if (params[:one] && params[:two]).present?
#search = Page.where("one like ? AND two like ? ", "%#{params[:one]}%", "%#{params[:two]}%")
else
redirect_to page_path, notice: "Not a valid combination"
end
end
This may solve your problem.
I've build quite complex form which creates one prescription with many realtions. I am using this syntax in view:
- provide(:title, 'Create prescription')
%h1 Add medicines to prescription
.row
.span6.offset3
= form_for #prescription do |f|
= render 'shared/error_prescription_messages'
%p
= f.hidden_field :patient_id, :value => params[:patient_id]
= f.hidden_field :user_id, :value => current_user.id
= f.fields_for :relations do |builder|
= render 'child_form', :f => builder
%p= f.submit "Submit"
chlid_form is quite simple :
- it=f.options[:child_index].to_i
- n= it.to_s
%h2
= "Medicine ##{it+1}"
= f.hidden_field :medicine_id, :id => "my_medicine_id#{it}"
- if params[:prescription].nil? || params[:prescription][:relations_attributes][n.to_sym][:medicine_name].nil?
= f.autocomplete_field :medicine_name, autocomplete_medicine_name_relations_path, :id_element => "#my_medicine_id#{it}"
- else
= f.autocomplete_field :medicine_name, autocomplete_medicine_name_relations_path, :id_element => "#my_medicine_id#{it}", :value => params[:prescription][:relations_attributes][n.to_sym][:medicine_name]
= f.label :amount, "Amount of medicine boxes"
= f.number_field :amount, :value => 1
= f.label :daily
= f.number_field :daily, :value => 1
= f.label :period_in_days, "Duration of treatment (in days)"
= f.number_field :period_in_days, :value => 1
So as you can see I'm using f.options[:child_index] to get index of child (0,1,2...) cause I generate multiple items with this particular form. I then put it to variable it and sucessfully use it in :id_element => "#my_medicine_id#{it}" which works PERFECTLY fine (creates my_medicine_id0, my_medicine_id1 ....) Although it doesn't work in this line:
:value => params[:prescription][:relations_attributes][n.to_sym][:medicine_name]
where n is just n=it.to_s.
I though somethings wrong in controller but if I change this line to whatever
:value => params[:prescription][:relations_attributes]**[:'0']**[:medicine_name] or any other integer from 0 to 4 everything works great, but I NEED dynamic change in this one. So I got proof that it DOES work because it generates integer fine here "#my_medicine_id#{it}" but won't work in hash! And when I print the whole hash from params I get this:
{"patient_id"=>"7", "user_id"=>"1", "relations_attributes"=>{"0"=>{"medicine_id"=>"13490", "medicine_name"=>"Locacid 500 mcg/g (0,05%) (1 tuba 30 g)", "amount"=>"0", "daily"=>"1", "period_in_days"=>"1"}, "1"=>{"medicine_id"=>"", "medicine_name"=>"", "amount"=>"1", "daily"=>"1", "period_in_days"=>"1"}, "2"=>{"medicine_id"=>"", "medicine_name"=>"", "amount"=>"1", "daily"=>"1", "period_in_days"=>"1"}, "3"=>{"medicine_id"=>"", "medicine_name"=>"", "amount"=>"1", "daily"=>"1", "period_in_days"=>"1"}, "4"=>{"medicine_id"=>"", "medicine_name"=>"", "amount"=>"1", "daily"=>"1", "period_in_days"=>"1"}}}
so to get the values I need it's pretty obvious that
params[:prescription][:relations_attributes][SOME_KIND_OF_INETEGER][:medicine_name] should work, but doesn't.
Controller code:
class PrescriptionsController < ApplicationController
before_action :signed_in_user
before_action :doctor_user, only: [:new, :create]
before_action :pharmacist_user, only: [:update]
def new
#prescription =Prescription.new
5.times { #prescription.relations.build }
end
def create
#prescription = Prescription.new(new_prescription_params)
if #prescription.save
flash[:success] = "Prescription created."
redirect_to #prescription
else
5.times { #prescription.relations.build }
render 'new', :prescription => params[:prescription]
end
end
def show
#prescription = Prescription.find(params[:id])
#medicines = #prescription.medicines.paginate(page: params[:page], :per_page => 10)
end
def update
#prescription = Prescription.find(params[:id])
#patient = Patient.find(params[:patient_id])
if !prescription_expired?(#prescription)
#prescription.realized = 1
if #prescription.save
flash[:success] = "Prescription realized."
redirect_to #patient
else
redirect_to root_url
end
else
flash[:notice] = "Can't realize, prescription expired."
redirect_to #patient
end
end
private
def new_prescription_params
params.require(:prescription).
permit(:patient_id, :user_id, relations_attributes: [:medicine_id, :medicine_name, :amount, :daily, :period_in_days])
end
def doctor_user
redirect_to(root_url) unless current_user.function == "doctor"
end
def pharmacist_user
redirect_to(root_url) unless current_user.function == "pharmacist"
end
def prescription_expired?(presc)
presc.created_at < 1.month.ago
end
def signed_in_user
unless signed_in?
store_location
flash[:notice] = "Please log in."
redirect_to login_url
end
end
end
I run out of ideas so I ask you guys if anyone can help. Thanks.
There is no point in using params in your view since you already assigned those to your models. Also when you rendering your new action, those params doesn't exist as nothing has been send to the server yet. Just get rid of all the values from inputs.
Your partial should look like:
- it=f.options[:child_index].to_i
- n= it.to_s
%h2
= "Medicine ##{it+1}"
= f.hidden_field :medicine_id, :id => "my_medicine_id#{it}"
= f.autocomplete_field :medicine_name, autocomplete_medicine_name_relations_path
= f.label :amount, "Amount of medicine boxes"
= f.number_field :amount
= f.label :daily
= f.number_field :daily
= f.label :period_in_days, "Duration of treatment (in days)"
= f.number_field :period_in_days
If you want your fields to have default value, set default value inside your database.
My code is this
def footstamp
if current_user
#user = User.find(params[:id])
#tracking = Tracking.where(:user_id => current_user.id, :target_user_id => #user.id)
if #tracking
#tracking.accessed_at = Time.now
#tracking.save
else
#tracking = Tracking.new
#tracking.user_id = current_user.id
#tracking.target_user_id = #user.id
#tracking.accessed_at = Time.now
#tracking.save
end
end
end
Then I get this error
NoMethodError (undefined method `save' for []:ActiveRecord::Relation):
Use:
#tracking = Tracking.where(:user_id => current_user.id, :target_user_id => #user.id).first
You are getting this error because the result of your method do not return a Tracking, but an array of Trackings.
Either you introduce more conditions to match only one Tracking, or use the first method or iterate over the results,
To use first:
#tracking = Tracking.where(:user_id => current_user.id, :target_user_id => #user.id).first
Iterate:
Tracking.where(:user_id => current_user.id, :target_user_id => #user.id).each do |tracking|
if tracking
tracking.accessed_at = Time.now
tracking.save
else
tracking = Tracking.new
tracking.user_id = current_user.id
tracking.target_user_id = #user.id
tracking.accessed_at = Time.now
tracking.save
end
end
Optimised answer,
def footstamp
if current_user
#user = User.find(params[:id])
#tracking = Tracking.where(:user_id => current_user.id, :target_user_id => #user.id).first_or_create
#tracking.accessed_at = Time.now
#tracking.save
end
end
More usefull methods here