I am using rails 4, and I want to show monthly ticket generated through pie charts. Can anybody help?
Schema:
create_table "tickets", force: :cascade do |t|
t.integer "store_id"
t.integer "vendor_id"
t.datetime "ticket_date"
t.datetime "deadline"
t.text "description"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "ticket_no"
t.string "vendor_name"
t.string "user_id"
t.integer "issue_id"
t.integer "category_id"
t.boolean "completed", default: false
end
My ticket.rb contains:
def self.category_count(user,category)
if user.vendor.nil?
category.tickets.where('store_id = ?', user.store.id)
else
category.tickets.where('vendor_id = ?', user.vendor.id)
end
end
def self.ticket_count(user,ticket)
if user.vendor.nil?
ticket.tickets.where('store_id = ?', user.store.id)
else
ticket.tickets.where('vendor_id = ?', user.vendor.id)
end
end
view:
tickets:
index.html.erb file is:
<% data = {} %>
<% for category in Category.all %>
<% data[:"#{category.name}"] = Ticket.category_count(current_user,category).count %>
<% end %>
<%= pie_chart(data) %>
I would probably start by moving this into a view helper method such as:
def pie_chart_data(user)
Hash[*Category.all.map { |c| [c.name, Ticket.category_count(user, c).count] }]
end
You could then call this in your view
<%= pie_chart(pie_chart_data(current_user)) %>
Related
I want to save a record to a Bookings table that has foreign keys from Schedules and Users table.
Here is the schema:
create_table "bookings", force: :cascade do |t|
t.integer "seats"
t.integer "base_price"
t.integer "total_price"
t.string "status"
t.integer "schedules_id", null: false
t.integer "users_id", null: false
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
t.index ["schedules_id"], name: "index_bookings_on_schedules_id"
t.index ["users_id"], name: "index_bookings_on_users_id"
end
create_table "schedules", force: :cascade do |t|
t.string "departure", null: false
t.string "destination", null: false
t.integer "seats_available", null: false
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
t.integer "price"
t.datetime "date_time"
end
create_table "users", force: :cascade do |t|
t.string "email", null: false
t.string "password_digest", null: false
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
t.string "firstname", null: false
t.string "lastname", null: false
end
Schedule and User has_many :bookings and Booking belongs_to :schedules and :users.
My view in bookings/new.html.erb
<%= form_for(#book, url: booking_path, local: true) do |f| %>
<% #books.each do |data| %>
<%= data.departure %>
<%= data.destination %>
<%= data.formatted_date_time %>
<%= data.seats_available %>
<%= data.price %>
<%= f.hidden_field :base_price, value: data.price %>
<%= f.hidden_field :seats %>
<%= f.hidden_field :total_price %>
<%= f.submit "Book" %>
<% end %>
<% end %>
I'm not sure this is the best way to do it but this is my attempt. Assume the hidden fields has a way to get the data, because I cut out the code that does it since I can see the params being passed in the Command Prompt.
My routes:
get 'booking', to: 'bookings#new'
post 'booking', to: 'bookings#create'
My BookingsController:
def new
#books = Schedule.where(id: params[:book_id])
#book = Booking.new
end
def create
#book = Booking.new(booking_params)
if #book.save
flash[:success] = 'success'
redirect_to root_path
end
end
private
def booking_params
params.require(:booking).permit(:base_price, :seats, :total_price)
end
In the command prompt it does display the parameters { "booking"=>{"base_price"=>"80", "seats"=>"2", "total_price"=>"160"}, "commit"=>"Book"}. The problem is that after that it now loads bookings/create.html.erb without saving the params. It somehow doesn't do the if #book.save part. Also I don't know how I can put the foreign keys or the :status variable or do I even need to. I appreciate the help!
I am very new to rails and active record so I'm probably doing something wrong, but... using the schema below, I want to create a list of courses in the outer do loop, then list each student enrolled in the course with the inner do loop. I m not sure if this approach will work, but this error keeps popping up:
ActionView::Template::Error (undefined method `enrollments' for #):
it seems that the association is made. what am i doing wrong?
Professor show page:
<div class="col-md-8">
<h2 class="card-title"><%= #professor.name %></h2>
<% #courses_taught.each do |course| %>
<div class="card mb-4 card-header">
<img class="card-img-top" src="http://placehold.it/750x300" alt="Card image cap">
<h3 class="card-text"><%= course.title %></h3>
</div>
<div class="card-body">
<% course.sections.enrollments.students.each do |student| %>
<p><% student.name %></p>
<% end %>
</div>
<% end %>
</div>
models:
enrollment
class Enrollment < ApplicationRecord
belongs_to :section
belongs_to :student
end
Student:
class Student < ApplicationRecord
has_many :enrollments
end
Professor:
class Section < ApplicationRecord
has_many :enrollments
belongs_to :professor
belongs_to :course
validates_uniqueness_of :professor_id, scope: :course_id
scope :by_professor_id, ->(prof_id) { where('professor_id = ?', prof_id) }
end
Course:
class Course < ApplicationRecord
enum status: { planning: 0, offered: 1 }
scope :offered, -> { where(status: 1) }
scope :planning, -> { where(status: 0) }
belongs_to :department
has_many :sections
has_many :professors, through: :sections
validates :title, :number, :status, :description, presence: true
validates :description, length: { in: 10..500 }
validates :title, :number, uniqueness: { case_sensitive: false }
def self.search(term)
if term
where('title LIKE ?', "%#{term}%").order('title DESC')
else
order('title ASC')
end
end
def self.taught_by(professor_id)
Course
.joins(:sections)
.joins(:professors)
.where(sections: { professor_id: professor_id })
.select('distinct courses.*')
end
end
Schema:
ActiveRecord::Schema.define(version: 20171013201907) do
create_table "courses", force: :cascade do |t|
t.string "title"
t.text "description"
t.string "number"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "status", default: 0
t.integer "department_id"
t.index ["department_id"], name: "index_courses_on_department_id"
end
create_table "departments", force: :cascade do |t|
t.string "name"
t.text "description"
t.text "main_image"
t.text "thumb_image"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "enrollments", force: :cascade do |t|
t.integer "section_id"
t.integer "student_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.index ["section_id"], name: "index_enrollments_on_section_id"
t.index ["student_id"], name: "index_enrollments_on_student_id"
end
create_table "professors", force: :cascade do |t|
t.string "name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "status", default: 0
t.integer "department_id"
t.text "bio"
t.index ["department_id"], name: "index_professors_on_department_id"
end
create_table "sections", force: :cascade do |t|
t.integer "number"
t.integer "max_enrollment"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "professor_id"
t.integer "course_id"
t.string "room"
t.index ["course_id"], name: "index_sections_on_course_id"
t.index ["professor_id", "course_id"], name: "index_sections_on_professor_id_and_course_id", unique: true
t.index ["professor_id"], name: "index_sections_on_professor_id"
end
create_table "students", force: :cascade do |t|
t.string "name"
t.decimal "gpa"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "users", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "name"
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "roles"
t.index ["email"], name: "index_users_on_email", unique: true
t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
end
end
enrollment belongs_to user, there is no need to use each on single record rather it will throw error. You can use below code.
<% course.sections.each do |section| %>
<% section.enrollments.each do |enrollment| %>
<p><% enrollment.student.name %></p>
<% end %>
<% end %>
Sean's answer is almost correct but since enrollments belongs_to student
you would use the singular form enrollment.student. but more simply you can just call student from inside enrollments block.
<div class="col-md-8">
<h2 class="card-title"><%= #professor.name %></h2>
<% #courses_taught.each do |course| %>
<div class="card mb-4 card-header">
<img class="card-img-top" src="http://placehold.it/750x300" alt="Card image cap">
<h3 class="card-text"><%= course.title %></h3>
</div>
<div class="card-body">
<% course.sections.each do |section| %>
<% section.enrollments.each do |enrollment| %>
<p><% enrollment.student.name %></p>
<% end %>
<% end %>
</div>
<% end %>
</div>
<div class="col-md-8">
<h2 class="card-title"><%= #professor.name %></h2>
<% #courses_taught.each do |course| %>
<div class="card mb-4 card-header">
<img class="card-img-top" src="http://placehold.it/750x300" alt="Card image cap">
<h3 class="card-text"><%= course.title %></h3>
</div>
<div class="card-body">
<% course.sections.each do |section| %>
<% section.enrollments.each do |enrollment| %>
<p><% enrollment.student.name %></p>
<% end %>
<% end %>
</div>
<% end %>
</div>
I would like to create categories in my app:
I got inspired by this question
But when #RailsGuy says: "Create some categories by categories controller and form (I don't think, I need to tell you that stuff, you are able to do it yourself)"
I felt lost...
How and where do I create my list of categories? dogs, cats, birds...
I saw that it could be done in the console but I will display a different pictures for each categories...
Here is my _form.html.slim
= simple_form_for #tuto do |f|
- if #tuto.errors.any?
#error_explanation
h2 = "#{pluralize(#tuto.errors.count, "error")} prohibited this tuto from being saved:"
ul
- #tuto.errors.full_messages.each do |message|
li = message
= f.hidden_field :user_id, value: current_user.id
= f.input :title
= f.collection_select :category_id, Category.all, :id, :name, {prompt: "Choose Category"}
= f.input :content, as: :text, input_html: { rows: "15" }
= f.button :submit, "Save"
my models:
tuto_model.rb
class Tuto < ActiveRecord::Base
acts_as_votable
belongs_to :user
belongs_to :category
validates :category, presence: true
end
categoty_model.rb
class Category < ActiveRecord::Base
has_many :tutos
end
schema.rb
ActiveRecord::Schema.define(version: 20160920133801) do
create_table "categories", force: :cascade do |t|
t.string "name"
t.text "description"
t.string "image"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "tutos", force: :cascade do |t|
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "title"
t.text "content"
t.integer "user_id"
t.integer "category_id"
end
add_index "tutos", ["user_id"], name: "index_tutos_on_user_id"
create_table "users", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "first_name"
t.string "last_name"
t.boolean "admin"
end
add_index "users", ["email"], name: "index_users_on_email", unique: true
add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
create_table "votes", force: :cascade do |t|
t.integer "votable_id"
t.string "votable_type"
t.integer "voter_id"
t.string "voter_type"
t.boolean "vote_flag"
t.string "vote_scope"
t.integer "vote_weight"
t.datetime "created_at"
t.datetime "updated_at"
end
add_index "votes", ["votable_id", "votable_type", "vote_scope"], name: "index_votes_on_votable_id_and_votable_type_and_vote_scope"
add_index "votes", ["voter_id", "voter_type", "vote_scope"], name: "index_votes_on_voter_id_and_voter_type_and_vote_scope"
end
thanks a lot for your help
Have the pictues stored in assets. And in the form/view use a conditional?:
<% if tuto.category == dog %>
<%= image_tag 'dog.jpg' %>
<% end %>
Something like that?
Steve.
The other post says to use the controller and form to create new categories. If you used scaffold to create the model Category, you'll have the new & create action in the controller and a new.html.erb and index.html.erb (or.slim if you're using that).
You can create your categories in there, then select one in your Tuto model.
Make sense?
Steve.
I'm using a gem called mailboxer to allow users to send messages among each other:
Here is what I have in my conversations controller:
class ConversationsController < ApplicationController
...
private
def mailbox
#mailbox ||= current_user.mailbox
end
def conversation
#conversation ||= mailbox.conversations.find(params[:id])
end
def conversation_params(*keys)
fetch_params(:conversation, *keys)
end
def message_params(*keys)
fetch_params(:message, *keys)
end
def fetch_params(key, *subkeys)
params[key].instance_eval do
case subkeys.size
when 0 then self
when 1 then self[subkeys.first]
else subkeys.map{|k| self[k] }
end
end
end
end
And this is what I have in my conversations show view:
<p> <%= conversation.subject %> </p>
<%= content_tag_for(:p, conversation.receipts_for(current_user)) do |receipt| %>
<% message = receipt.message %>
<p>
<%= message.body %>
</p>
<% end %>
<%= render 'messages/form', conversation: conversation %>
Which works, but the messages are all scrambled. How do I order the messages of the conversation by when they were created?
My schema pertaining to mailboxer:
create_table "receipts", force: true do |t|
t.integer "receiver_id"
t.string "receiver_type"
t.integer "notification_id", null: false
t.boolean "is_read", default: false
t.boolean "trashed", default: false
t.boolean "deleted", default: false
t.string "mailbox_type", limit: 25
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "receipts", ["notification_id"], name: "index_receipts_on_notification_id"
create_table "conversations", force: true do |t|
t.string "subject", default: ""
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "notifications", force: true do |t|
t.string "type"
t.text "body"
t.string "subject", default: ""
t.integer "sender_id"
t.string "sender_type"
t.integer "conversation_id"
t.boolean "draft", default: false
t.datetime "updated_at", null: false
t.datetime "created_at", null: false
t.integer "notified_object_id"
t.string "notified_object_type"
t.string "notification_code"
t.string "attachment"
t.boolean "global", default: false
t.datetime "expires"
end
add_index "notifications", ["conversation_id"], name: "index_notifications_on_conversation_id"
I think you just need to order the receipts like this:
<%= content_tag_for(:p, conversation.receipts_for(current_user).order(:created_at)) do |receipt| %>
I am new to ruby on rails. I am originally a PHP/mysql programmer. I can not seem to understand how you connect any posts to the user and display them (e.g. a post is successfully created with the user ID and then the users ID is queried to get his or her name.)
I am using devise for authentication.
Controller
def create
poll = current_user.polls.build(params[:poll])
poll.onefourty = poll.onefourty[0..140]
poll.created_at = Time.now
poll.save!
if #poll.save
redirect_to root_path
else
redirect_to root_path
end
end
Form
<%= form_for Poll.new, :html => { :multipart => true } do |f| %>
<div id="form">
<div class="text_input" style="height: 65px;"><%= f.text_area :onefourty %><div class="label" style="height: 63px; line-height: 63px;">Question</div></div>
<div class="text_input"><%= f.text_field :option1 %><div class="label">Option One</div></div>
<div class="text_input"><%= f.text_field :option2 %><div class="label">Option Two</div></div>
<div class="text_input"><%= f.text_field :option3 %><div class="label">Option Three</div></div>
<div class="text_input"><%= f.text_field :option4 %><div class="label">Option Four</div></div>
<div id="submit">
<div id="left">
</div>
<%= f.submit :id => "next", :value => "" %>
</div>
</div>
<% end %>
Migrations:
create_table "polls", :force => true do |t|
t.text "onefourty"
t.string "option1"
t.string "option2"
t.string "option3"
t.string "option4"
t.string "option5"
t.string "option6"
t.datetime "created_at"
t.datetime "updated_at"
t.string "photo1_file_name"
t.string "photo1_content_type"
t.integer "photo1_file_size"
t.datetime "photo1_updated_at"
t.string "photo2_file_name"
t.string "photo2_content_type"
t.integer "photo2_file_size"
t.datetime "photo2_updated_at"
t.string "photo3_file_name"
t.string "photo3_content_type"
t.integer "photo3_file_size"
t.datetime "photo3_updated_at"
t.string "photo4_file_name"
t.string "photo4_content_type"
t.integer "photo4_file_size"
t.datetime "photo4_updated_at"
end
create_table "users", :force => true do |t|
t.string "email", :default => "", :null => false
t.string "encrypted_password", :limit => 128, :default => "", :null => false
t.string "password_salt", :default => "", :null => false
t.string "confirmation_token"
t.datetime "confirmed_at"
t.datetime "confirmation_sent_at"
t.string "reset_password_token"
t.string "remember_token"
t.datetime "remember_created_at"
t.integer "sign_in_count", :default => 0
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at"
t.datetime "updated_at"
t.string "username"
t.string "firstname"
t.string "lastname"
t.string "avatar_file_name"
t.string "avatar_content_type"
t.integer "avatar_file_size"
t.datetime "avatar_updated_at"
end
Assuming you have the following structure:
# app/model/user.rb
class User < ActiveRecord::Base
has_many :polls
#...
end
# app/model/poll.rb
class Poll < ActiveRecord::Base
belongs_to :user
#...
end
And if you're successfully creating polls, which it appears you probably are, then in any view - you could query and display the current user's polls with:
# app/views/polls/index.html.erb
<%- if current_user -%>
<%- current_user.polls.each do |poll| -%>
<h2><%= poll.onefourty %></h2>
<ul>
<li><%= poll.option1 %></li>
<li><%= poll.option2 %></li>
<li><%= poll.option3 %></li>
<li><%= poll.option4 %></li>
<li><%= poll.option5 %></li>
<li><%= poll.option6 %></li>
</ul>
<%- end -%>
<%- else -%>
<em>Not logged in</em>
<%- end -%>