如何從代碼調用生成器？

Question

我寫我自己的發電機，從控制檯其推出這樣

rails generate ead_document TechnicalOpinion --document_type_id=1 

它創建模型和遷移。我想從我的控制器執行生成器而不使用ruby系統命令。有沒有辦法做到這一點？

Answer 1

解似乎是相當簡單：

該代碼在控制器

Rails::Generators.invoke("ead_document", [@document_type.table_name.classify, "--document_type_id=#{@document_type.id}"]) 

是相同的，因爲這控制檯

rails generate ead_document TechnicalOpinion --document_type_id=1 

Answer 2

在紅寶石有執行系統命令幾種不同的方式

string = `ls` 
# runs command and returns its STDOUT as a string 
string = %x{ls} 
# ditto, alternative syntax 

system "ls" 
# runs command and returns its exit status; its STDOUT gets output to our STDOUT 

print `ls` 
#The same, but with back quotes 

exec "ls" 
# replace current process with another 

# call system command and read output asynchronously 
io = IO.popen('ls') 
# ... later 
io.each {|line| puts line}