我应该如何通过Chartkick显示每月生成的票证

Question

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) %>

Answer 1

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)) %>