不知道如何建立任務 - 爲調用其他任務

Question

我有一個名爲setup_a_new_set_of_snippets rake任務父任務，看起來像這樣：我調用它像這樣

load './lib/tasks/fetch_and_create_snippets.rake' 
load './lib/tasks/generate_diffs_for_snippets.rake' 
load './lib/tasks/cleanup_snippets_with_empty_diffs.rake' 

desc "Setup a new set of Snippets" 
task :setup_a_new_set_of_snippets, [:repo, :path, :entry_id, :framework_id, :method_name] => :environment do |task, args| 
    repo = args[:repo] 
    path = args[:path] 
    entry_id = args[:entry_id] 
    framework_id = args[:framework_id] 
    method_name = args[:method_name] 
    Rake::Task["fetch_and_create_snippets[#{repo},#{path},#{entry_id},#{framework_id},#{method_name}]"].invoke 
    Rake::Task["generate_diffs_for_snippets"].invoke 
    Rake::Task["cleanup_snippets_with_empty_diffs"].invoke 
end 

：

$ rake setup_a_new_set_of_snippets["some/repo","some/viable/path",1,1,has_many] 
** Invoke setup_a_new_set_of_snippets (first_time) 
** Invoke environment (first_time) 
** Execute environment 
** Execute setup_a_new_set_of_snippets 
rake aborted! 
Don't know how to build task 'fetch_and_create_snippets[some/repo,some/viable/path,1,1,has_many]' (see --tasks) 
/lib/tasks/setup_new_snippet_set.rake:12:in `block in <top (required)>' 
/gems/rake-11.2.2/exe/rake:27:in `<top (required)>' 
/bin/ruby_executable_hooks:15:in `eval' 
/bin/ruby_executable_hooks:15:in `<main>' 
Tasks: TOP => setup_a_new_set_of_snippets 
(See full trace by running task with --trace) 

這是它被掛在任務：

desc 'Fetch and Create Snippets from Github' 

task :fetch_and_create_snippets, [:repo, :path, :entry_id, :framework_id, :method_name] => :environment do |task, args| 
    # truncated for brevity 
end 

FWIW，當我運行fetch_and_create_snippets個任務本身......它像一個魅力。

這可能是什麼原因造成的？

Answer 1

您沒有正確地將參數傳遞給rake任務。見How to pass command line arguments to a rake task

具體來說，就在這裏：

Rake::Task["fetch_and_create_snippets[#{repo},#{path},#{entry_id},#{framework_id},#{method_name}]"].invoke 

它看起來像你正在使用的語法Rake.application.invoke_task而對於Rake::Task[name].invoke正確的語法是：

Rake::Task["fetch_and_create_snippets"].invoke(repo, path, entry_id, framework_id, method_name) 

Answer 2

來傳遞參數的語法到耙子任務是：

Rake::Task['fetch_and_create_snippets'].invoke(
    repo, path, entry_id, framework_id, method_name 
)