unable to set if else conditions with has-many through association in rails 4 view

I am working on an application with has_many through association. in employee.rb

class Employee < ActiveRecord::Base
 has_many :inventories, through: :employee_inventories
end

in inventory.rb

class Inventory < ActiveRecord::Base
  has_many :employees, through: :employee_inventories
end

in employee_inventories.rb

class EmployeeInventory < ActiveRecord::Base
  belongs_to :employee
  belongs_to :inventory
end

Everything is fine with this association. But when I implement if-elsif condition with accessing status column from employee_inventory. Like that

<% if (inventory.is_available == false && current_employee[:role] == 'INVENTORY') %>
     <% if(inventory.employee_inventories.collect{|e| e.status == 'REQUESTED'}) %>
           <%= link_to 'Allot', inventory_available_status_inventory_path(inventory,   :employee_inventory => { :status => 'ALLOTTED' }) %>
            <%= link_to 'Cancel', inventory_available_status_inventory_path(inventory, :employee_inventory => { :status => 'CANCELLED' } ) %>
     <% elsif (inventory.employee_inventories.collect{|e| e.status == 'ALLOTTED'}) %> 
            <%= link_to 'return'%>
      <% end %>
<% elsif inventory.is_available == true %>
     <%= link_to 'Request for inventory',request_inventories_inventory_path(inventory, :employee_inventory => { :employee_id => current_employee, :status => 'REQUESTED', :inventory_id => inventory}) %>
<% end %>

In code when update status of employee_inventory to REQUESTED. Everything goes fine but after when I update status to ALLOTTED then second elsif condition is unable to execute.

from inventory.employee_inventories.collect{|e| e.status == 'ALLOTTED'} Output:-

[true]

I am confused why is it not executing in second time. Please guide me. Thank in advance.