ambition/app/models/mission.rb

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