我们如何在activities_controller中包含Facebook个人资料图片(又名新闻源)?
class ActivitiesController < ApplicationController
def index
@activities = PublicActivity::Activity.order("created_at desc").where(owner_id: current_user.following_ids, owner_type: "User")
end
end
我从user.rb获得个人资料图片:
def self.from_omniauth(auth)
where(provider: auth.provider, uid: auth.uid).first_or_initialize.tap do |user|
user.provider = auth.provider
user.image = auth.info.image #specifically this line &
user.uid = auth.uid #specifically this line
user.name = auth.info.name
user.oauth_token = auth.credentials.token
user.oauth_expires_at = Time.at(auth.credentials.expires_at)
user.password = (0...8).map { (65 + rand(26)).chr }.join
user.email = (0...8).map { (65 + rand(26)).chr }.join+"@mailinator.com"
user.save!
end
end
活动指数
<% @activities.each do |activity| %>
<% if @user.uid %>
<%= image_tag @user.image %>
<% else %>
<%= gravatar_for @user %>
<% end %>
<%= link_to activity.owner.name, activity.owner if activity.owner %>
<%= render_activity activity %>
<% end %>
我目前收到此错误:undefined method 'uid' for nil:NilClass
- public_activity:http://railscasts.com/episodes/406-public-activity
- 全能身份验证:http://railscasts.com/episodes/360-facebook-authentication
感谢您的专业知识!
似乎@user没有在活动控制器的索引函数中分配。如果活动和用户之间存在关系,您应该这样做:
<% @activities.each do |activity| %>
<% if activity.user.uid %>