Menu
In a Rails helper, you can capture the output of an ERB block using the capture method. However, what if the ERB block requires a parameter? How can I use capture in this case?
For a made-up example:
<% my_helper(:parameter, models) do |model| %>
<%= model.eye_color %>
<% end %>
In the my_helper method, I want to surround the output of each iteration of the block with <span class='color'>...</span>.
I know I can capture the output of the ERB block and store it in a variable with html = capture(&block), but I don't know how to pass the necessary model parameter to that block!
584
Pass-by-reference means that the arguments of a method are references to the variables that were passed into the method, and modifying the arguments modifies the original variables. If Ruby were pass-by-reference, changing the value of the argument (arg) would change the value of the variable val .
In the code you posted, *args simply indicates that the method accepts a variable number of arguments in an array called args . It could have been called anything you want (following the Ruby naming rules, of course).
Can you not pass them into the call to capture? The docs show that it splats arguments, so I would assume they get passed to the block. E.g:
html = capture(:foo, :bar, &block)
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
