Friday, September 4, 2015
On 2015-Sep-4, at 15:56 , Николай Спелый <peavey5150kh@gmail.com> wrote:Great !I already try write this logic but it not works. But when i copy-paste your variant it's work.So difference is in formating code, i write in one line, you write in three lines.That's nice for resolving problem, but why it's works in divided style of ruby and not works in one-line style ?My one-line is <%= Chat.find_by(id: 6).chatusers.each { |chat_user| chat_user.user } %> which about i told.
So you have:
<%= something %>
which ERB interprets as call .to_s on the result of evaluating something and add that to the output (possibly after making it HTML-safe depending on your Ruby on Rail version)
Therefore, what is the value of
Well, that's just something.each {|…| … } which has the value of something. In your case, the same as if you just had:Chat.find_by(id: 6).chatusers.each { |chat_user| chat_user.user }
Chat.find_by(id: 6).chatusers
This is probably some ActiveRecord proxy for the association. The default .to_s is very likely similar to .inspect and looks something like:
#<ActiveRecord::… >
So plop that into your HTML and a browser sees the <…> as an unknown element and does nothing so you're left with:
#
in your page. Does that make sense to you?
-Rob
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