class Mission < ActiveRecord:: Base

    has_many :comments

    validates :name, presence: true

    validates :deadline, presence: true

    validates :priority, presence: true

     validates :status, presence: true

    validates :content, presence: true

    validates :project_id, presence: true

    validate :priority_is_among_valid_values

    validate :status_is_among_valid_values

    validate :project_exists, on: :create

    private 

        def priority_is_among_valid_values

            if priority != 1 and  priority != 2 and priority != 3

                errors[:priority] = "priority is not among valid values"

            end

        end

        def status_is_among_valid_values

            if  status != 1 and  status != 2 and status != 3 and status != 4

                errors[:status] = "status is not among valid values"

            end

        end

        def project_exists

            #puts project_id

            project = Project.find_by(id: project_id)

            #puts project.inspect

            if project == nil

                errors[:project_id] = "project_id is not exist"

            end

        end

end