I've been racking my brain for a while now and I can't figure out why my csv upload in my rails app is failing. I have a simple model that converts two names in the csv to integers of foreign_ids. The model works completely fine when executed manually in the console but for some reason it fails on the server. I get the error message: undefined method `id' for nil:NilClass
The model looks as follows:
require 'csv'
class Schedule < ActiveRecord::Base
belongs_to :team
belongs_to :opponent, :foreign_key => 'opponent_id', :class_name => 'Team'
def self.import(file)
CSV.foreach(file.path, headers: true, :header_converters => :symbol) do |row|
week_hash = row.to_hash
teamname = week_hash[:team]
teamhash = Team.where(:name => teamname).first
teamhash_id = teamhash.id
week_newhash = week_hash.reject!{ |k| k == :team}
week_newhash[:team_id] = teamhash_id
opponentname = week_hash[:opponent]
opponent_hash = Team.where(:name => opponentname).first
hashopponent_id = opponent_hash.id
week_newhash = week_newhash.reject!{ |k| k == :opponent}
week_newhash[:opponent_id] = hashopponent_id
Schedule.create!(week_newhash)
end
end
end
The problem must be in here somewhere. Any help would be greatly appreciated. Thanks.
I'm an idiot. The model was fine I just had a column mislabeled in my csv.
也许将: teamhash_id = teamhash.id
更改为: teamhash_id = teamhash[:id]
,并且hashopponent_id = opponent_hash.id
hashopponent_id = opponent_hash[:id]
hashopponent_id = opponent_hash.id
hashopponent_id = opponent_hash[:id]
吗?
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