Rails - 表单提交时未创建新字段

Question

所以我有以下型号。具有以下定义的用户、团队和成员

用户

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
        :recoverable, :rememberable, :validatable

  belongs_to :current_team, class_name: "Team", optional: true
  has_many :memberships
  has_many :teams, through: :memberships
  has_many :owner_memberships, -> { where(role: :owner) }, class_name: "Membership"
  has_many :owned_teams, through: :owner_memberships, source: :team

  def membership_for(team)
    memberships.where(team: team).take
  end
end

团队

class Team < ApplicationRecord
    has_many :memberships
    has_many :users, through: :memberships
    has_one :owner_membership, -> { where(role: :owner, status: :active) }, class_name: "Membership"
    has_one :owner, through: :owner_membership, source: :user
end

会员资格

class Membership < ApplicationRecord
  belongs_to :user
  belongs_to :team

end

使用脚手架生成的所有表单都可以正常工作。我现在面临的问题是我在成员资格模型中添加了 2 个额外的字段，Role & Status 意味着成员资格 class 现在看起来如下所示，但我正在努力通过这个这些字段到数据库。

class Membership < ApplicationRecord
  belongs_to :user
  belongs_to :team

  enum status: [:pending, :active]

  enum role: [:owner, :admin, :user]
  
  def owner_or_admin?
    owner? || admin?
  end
end

当我查看 rails s 的控制台时，我可以看到以下内容，这表明新字段不是作为成员资格定义的一部分而是作为单独的参数发送的。我如何让他们正确发送和创建

Processing by MembershipsController#create as HTML
    Parameters: {
        "authenticity_token"=>"5gzC/7YLIzqb+uNqHi2izth07MPv4WXrF49444+2bK7ML7ceLwk+BR2tP9fHiqCVJFJrxJHjuaz7dXxcp0yq0A==", 
        "membership"=>{"user_id"=>"2", "team_id"=>"1"}, 
        "role"=>"0", 
        "status"=>"0", 
        "commit"=>"Create Membership"
    }


Membership Create (1.3ms)  INSERT INTO "memberships" ("user_id", "team_id", "created_at", "updated_at") VALUES (?, ?, ?, ?)  [["user_id", 2], ["team_id", 1], ["created_at", "2021-08-30 14:58:03.929323"]

编辑：添加了表单视图

<%= form_with(model: membership, local: true) do |form| %>
  <% if membership.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(membership.errors.count, "error") %> prohibited this membership from being saved:</h2>

      <ul>
        <% membership.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= form.label :user_id %>
    <%= form.collection_select :user_id, User.order(:email),:id,:email, include_blank: true %>

  </div>

  <div class="field">
    <%= form.label :team_id %>
    <%= form.collection_select :team_id, Team.where(id: current_team.id),:id,:name, :selected => current_team %>

  </div>

  <div class="field">
    <%= form.label :role %>    
    <%= select_tag :role, options_for_select(Membership.roles.map {|k, v| [k.humanize.capitalize, v]}) %>
  </div>

  <div class="field">
    <%= form.label :status %>    
    <%= select_tag :status, options_for_select(Membership.statuses.map {|k, v| [k.humanize.capitalize, v]}) %>
  </div>

  <div class="actions">
    <%= form.submit %>
  </div>
<% end %>

Answer 1

首先设置一个方法，将枚举状态作为 [label, value] 对的数组，适用于构建选择器、复选框或单选按钮：

module EnumHelper
  # creates an array of [label, value] pairs from an enum
  # the translations can be customized through for example:
  # -  membership.statuses.active
  # -  membership.roles.active
  def options_from_enum(klass, name)
    i18n_scope = "#{klass.model_name.i18n_key}.#{name}"
    klass.public_send(name).map do |key|
      label = I18n.t(
        key,
        default: key.to_s.humanize
        scope: i18n_scope 
      )
      [label, key]
    end
  end
end

请注意，您从表单传递的值应该是枚举状态的名称（“待定”），而不是整数（“0”），后者是内部实现细节，只有型号。

然后确保您在表单构建器之外创建输入：

<%= form_with(model: @membership) do |form| %>
  <div class="field">
    <%= form.label :role %>
    <%= form.select :role, options_from_enum(Membership, :roles) %>
  </div>
  <div class="field">
    <%= form.label :status %>
    <%= form.select :status, options_from_enum(Membership, :statuses) %>
  </div>
 
  # ...
<% end %>

Rails - 表单提交时未创建新字段

Rails - new fields not getting created on form submission

ruby-on-rails

rails-activerecord

编辑：添加了表单视图