Question

我想在注册项目（具有类别和合格的受众）后向创建警报的每个用户（具有相同类别和一个合格的受众）发送电子邮件。

模型

class Project
  belongs_to :category
  belongs_to :fondation
  has_many :project_eligibles
  has_many :eligibles, through: :project_eligibles
end

class Category
  has_many :projects
  has_many :alerts
end

class ProjectEligible
  belongs_to :project
  belongs_to :eligible
end

class Publication
  belongs_to :user
  belongs_to :category
  belongs_to :eligible
end

class User
  has_many :favorites
  has_many :favorite_projects, through: :favorites, source: :favorited, 
  source_type: 'Project'
  has_many :publications
end

MAILER

class ProjectMailer < ApplicationMailer
  def newproject(project)
    @project = project
    proj_elig = ProjectEligible.where('project_id =?', project.id).pluck(:eligible_id)
    mails = User.includes(:publications).where("publications.eligible_id IN (?) AND publications.category_id = ?", proj_elig, project.category_id).pluck(:email)
      mail(
        to: mails,
        subject:  "A new project for you !"
      )
  end
end

CONTROLLER（项目）

    class ProjectsController < ApplicationController
      def create
        @project = Project.new(project_params)
        @project.save
        if @project.save
          ProjectMailer.newproject(@project).deliver_now
          redirect_to projects_path
        else
          render :new
        end
      end

private

      def project_params
        params.require(:project).permit(:title, :description, :link, :expiration, 
        :all_tags, :category_id, :fondation_id, eligible_ids: [])
      end

    end

ProjectMailer适用于类别，但不适用于project_eligible。例如，如果用户希望在创建带有category_id 1和qualified_id 1的项目后立即收到电子邮件：

#<Publication:0x007fe089425010
 id: 17,
 user_id: 1,
 category_id: 1,
 eligible_id: 1,
 created_at: Sun, 04 Nov 2018 17:08:52 UTC +00:00,
 updated_at: Sun, 04 Nov 2018 17:08:52 UTC +00:00>

我创建一个项目：

Project.create!(
  title: "test title", 
  description: 'sample description', 
  expiration: "2018-11-14", 
  category_id: 1 , 
  fondation_id: 1,
  eligible_ids: [1,2]
)

如果我检查：项目已创建：

#<Project id: 481, title: "test title", description: "sample description", link: nil, expiration: "2018-11-14", category_id: 1, fondation_id: 1, created_at: "2018-11-13 09:15:01", updated_at: "2018-11-13 09:15:01">

但是project_eligibles很奇怪，没有保存：

#<ActiveRecord::Associations::CollectionProxy [#<ProjectEligible id: nil, project_id: nil, eligible_id: 1, created_at: nil, updated_at: nil>, #<ProjectEligible id: nil, project_id: nil, eligible_id: 2, created_at: nil, updated_at: nil>]>

所以proj_elig为空：[]

但是之后，如果在终端机中，我检查了Project.last.project_eligibles：我找到了我的项目（id：398），其中包含2个合格的ID（分别为1和2）：

[#<ProjectEligible:0x007fe08d010d40
  id: 398,
  project_id: 481,
  eligible_id: 2,
  created_at: Tue, 13 Nov 2018 09:15:01 UTC +00:00,
  updated_at: Tue, 13 Nov 2018 09:15:01 UTC +00:00>,
 #<ProjectEligible:0x007fe08d010048
  id: 397,
  project_id: 481,
  eligible_id: 1,
  created_at: Tue, 13 Nov 2018 09:15:01 UTC +00:00,
  updated_at: Tue, 13 Nov 2018 09:15:01 UTC +00:00>]

是否有project_eligible记录相对于项目被延迟了，因此在ActionMailer中始终将其视为空？

我如何确保project_eligibles已注册且proj_elig不为空？

谢谢您的建议！我有点迷路了。。。

ActionMalier Rails：根据条件向用户发送电子邮件（很多）

0 个答案: