检查一个字段是否包含在ROR的另一个列表中

Question

我有一个名为@domianskill_technical_skills的列表。此表为domain_skills和technical_skills数据相关的表，并基于所检索domain_skill_id

我需要从technical_skills返回所有technical_skills表，但多了一个属性命名分配这如果属实technical_skill_id出现在@domianskill_technical_skills列表中。

我的工作代码就像下面

def assigned_technical_skills 

     @domain_skill_technical_skills = DomainSkillsTechnicalSkill.select('id, technical_skill_id').where(domain_skill_id: params[:domain_skill_id]) 

     Rails.logger.info(@domain_skill_technical_skills.to_a) 

     TechnicalSkill.all.where(record_status: 1).each do |skill| 

     if @domain_skill_technical_skills.include?(skill.id) then 
      Rails.logger.info(skill.id.to_s + skill.name) 
     end 

     end 

     respond_with @domain_skill_technical_skills 
    end 

请指引我，如果以正确的语句，也需要选择所需的字段（ID，姓名，分配）和回创建一个实例。

Answer 1

你可能想用它来取代你的代码，如果DomainSkillsTechnicalSkill有“technical_skill_id”列

def assigned_technical_skills 
    # just collect technical_skill_id 
    @domain_skill_technical_skill_ids = DomainSkillsTechnicalSkill.select('id, technical_skill_id').where(domain_skill_id: params[:domain_skill_id]).collect(&:technical_skill_id) 
    Rails.logger.info(@domain_skill_technical_skill_ids.to_a) 
    @technical_skills = [] 
    TechnicalSkill.select('id, name').where(record_status: 1).each do |skill| 

    @technical_skills << skill.as_json.merge!(
     { assigned: @domain_skill_technical_skill_ids.include?(skill.id)} 
    )  
    end 
    respond_with @technical_skills 
end