Rake任务 - 未定义的方法

Question

我修补我的方法来创建一个耙子任务，抓取给定页面的签入量扔脸谱。我使用考拉宝石和铁轨。

我这样做是通过创建一个rake任务：

task :get_likes => :environment do 
    require 'koala' 
    # Grab the first user in the database 
    user = User.first 

    # Loop throw every school & and call count_checkins 
    School.columns.each do |column| 
     user.facebook.count_checkins(column.name, user) 
    end 
end 
# Count like for every school else return 0 
def count_checkins(name, u) 
    a = u.facebook.fql_query('SELECT checkins FROM page WHERE name = "' + name + '"') 
    if a[0].nil? 
     return 0 
    else 
     return b = a[0]["checkins"] 
    end 
end 
# Initialize an connection to the facebook graph 
def facebook 
    @facebook ||= Koala::Facebook::API.new(oauth_token) 
end 

但我得到一个错误：

private method `count_checkins' called for #<Koala::Facebook::API:0x007fae5bd348f0> 

任何意见或更好的方式来编写一个rake任务将是真棒！

检查完整的错误在这里：https://gist.github.com/shuma/4949213

Answer 1

真的不能格式化这个正确的评论，所以我把它放在一个答案。我把下面进入用户模式：

# Count like for every school else return 0 
def count_checkins(name) 
    a = self.facebook.fql_query('SELECT checkins FROM page WHERE name = "' + name + '"') 
    if a[0].nil? 
     return 0 
    else 
     return b = a[0]["checkins"] 
    end 
end 

# Initialize an connection to the facebook graph 
def facebook 
    @facebook ||= Koala::Facebook::API.new(oauth_token) 
end 

然后改变耙任务：

task :get_likes => :environment do 
    require 'koala' 
    # Grab the first user in the database 
    user = User.first 

    # Loop throw every school & and call count_checkins 
    School.columns.each do |column| 
     user.count_checkins(column.name) 
    end 
end 

这样count_checkins定义的用户模型，而不是试图修改内考拉类 - 而且您不必复制工作，因为必须传递更多的用户和Facebook参数。