Question

我目前正在关注从第407集开始的活动饲料的ryan bates教程我想知道如何才能展示我朋友的活动。

如果在使用公共活动gem时我会这样做

@activities = PublicActivity::Activity.order("created_at desc").*where(owner_id: current_user.friend_ids, owner_type: "User")*

，这个表就是宝石

class CreateActivities < ActiveRecord::Migration
  # Create table
  def self.up
    create_table :activities do |t|
      t.belongs_to :trackable, :polymorphic => true
      t.belongs_to :owner, :polymorphic => true
      t.string  :key
      t.text    :parameters
      t.belongs_to :recipient, :polymorphic => true

      t.timestamps
    end

    add_index :activities, [:trackable_id, :trackable_type]
    add_index :activities, [:owner_id, :owner_type]
    add_index :activities, [:recipient_id, :recipient_type]
  end
  # Drop table
  def self.down
    drop_table :activities
  end
end

为了实现这一点，表格就是这个

class CreateActivities < ActiveRecord::Migration
  def change
    create_table :activities do |t|
      t.belongs_to :user
      t.string :action
      t.belongs_to :trackable
      t.string :trackable_type

      t.timestamps
    end
    add_index :activities, :user_id
    add_index :activities, :trackable_id
  end
end

如何向用户朋友显示此活动？

Answer 1

这对我有用。请让我知道这对你有没有用。如果没有，我会尝试修改它。请记住，此示例显示当前用户的关注者活动。如果您的应用涉及朋友，而不是关注者，则必须对friend_ids进行适当的更改

PublicActivity::Activity.order("created_at desc").where(owner_type: "User", owner_id: current_user.followed_users.map {|u| u.id}).all

如何在Rails 4中显示仅用户的公共活动

1 个答案: