Line breaks when using rails console(Terminal)

Question

When I type large ActiveRecord queries,Before finishing the query, the line is breaking and I can't even reading or typing the command properly.I am using ubuntu.Any solution?

score 8 · Accepted Answer · answered Aug 24 '12 at 11:11

8

Finally narrowed the issue to be with resizing the terminal.Usually I maximize the terminal for typing large commands , hence the problem. Found out that this can be solved by handling the SIGWINCH signal to resize IRB.In the solution below i am also resizing Hirb.

Add the following lines to ~/.irbrc (create one if it doesn't exist) :

Signal.trap('SIGWINCH', proc { y, x = `stty size`.split.map(&:to_i); Hirb::View.resize(x, y) if defined? Hirb } )

answered Aug 24 '12 at 11:11

shajin

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For those not using Hirb `Signal.trap('SIGWINCH', proc { y, x = `stty size`.split.map(&:to_i); Readline.set_screen_size(y, x) if defined? Readline } )` – Urkle Aug 10 '16 at 13:11

score 3 · Answer 2 · answered Aug 24 '12 at 08:12

A more generic way is using a \ at the end of your line.

Using the same example of "Kenny Grant"

ruby> User.very.long.chain.of.arel.commands. \
      where('thing = ?', 4).very.long.chain.of.arel.commands

the last line should not have any ending \ and then the whole command will be executed.

score 1 · Answer 3 · answered Aug 24 '12 at 08:13

1

I've noticed the same bug with irb, rails console uses irb by default. That's why I'm using pry, look here how to setup pry with rails.

answered Aug 24 '12 at 08:13

megas

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score 0 · Answer 4 · answered Aug 24 '12 at 08:05

If your query is like this:

rails c
ruby> User.very.long.chain.of.arel.commands.where('thing = ?',4).very.long.chain.of.arel.commands

You should be able to do this:

ruby> User.very.long.chain.of.arel.commands.where('thing = ?',
          4).very.long.chain.of.arel.commands

and split it on any commas within the conditions, then when you press return at the end it will execute.

Line breaks when using rails console(Terminal)

4 Answers4