I have params like:
params[:id]= "\"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6\""
And i want to get expected result as below:
"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6"
How can I do this?
You can use gsub:
"\"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6\"".gsub("\"", "")
=> "ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6"
Or, as #Stefan mentioned, delete:
"\"ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6\"".delete("\"")
=> "ebfd11a9-3aa4-415a-ba72-1b6796ea1bf6"
If this is JSON data, which it could very well be in that format:
JSON.load(params[:id])
This handles things where there's somehow escaped strings in there, or the parameters are an array.
Just Use tr!
params[:id].tr!("\"","")
tr! will also change the main string
In case you do not want to change main string just use :
params[:id].tr("\"","")
Thanks Ilya
Related
I want to remove some part of string from using ruby regex:
value = localhost:8393/foobar/1 test:foobartest
I want to remove "test" from my string [localhost:8393/foobar/1 test:foobartest] and rest of the value so that output should look like:
localhost:8393/foobar/1
How to do this in ruby? Can you share some sample code to achieve this?
Appreciated your help in advance!
Thanks!
I would do something like this:
value = 'localhost:8393/foobar/1 test:foobartest'
value.split.first
#=> "localhost:8393/foobar/1"
Or if you want to use an regexp:
value.sub(/ test.*/, '')
"localhost:8393/foobar/1"
I'm having an array $customPre. I want to print the element of the array "Please specify which fund". I am doing like this:
{$customPre.Please specify which fund}
But it's not working.
In this case you need to use PHP-like syntax that is similar to PHP: {$variable['key']}.
If In PHP you have:
$smarty->assign('customPre', array ('Please specify which fund' => 'This is value'));
In Smarty you need to use:
{$customPre['Please specify which fund']}
And the output for this will be:
This is value
I believe you cannot use in this case dot syntax ( {$customPre.Please specify which fund}) because it's probably looks for whitespaces in keys. Even adding quotes won't help.
I'm working on a configuration file parser and I need help parsing key: value pairs into a hash.
I have data in the form of: key: value key2: value2 another_key: another_value.
So far I have code in form of
line = line.strip!.split(':\s+')
which returns an array in the form of
["key:value"]["key2: value2"]["another_key: another_value"]
How can I turn these arrays into a single hash in the form of
{key=>value, key2=>value2, another_key=>another_value}
I'm not sure if the key:value pairs need to be in the form of a string or not. Whatever is easiest to work with.
Thanks for your help!
This is the solution I found:
line = line.strip.split(':')
hash = Hash[*line]
which results in the output{"key"=>"value"}, {"key2"=>"value2"}
Very very close to Cary's solution:
Hash[*line.delete(':').split]
Even simpler:
Hash[*line.gsub(':',' ').split]
# => {"key"=>"value", "key2"=>"value2", "another_key"=>"another_value"}
Assuming the key and value are single words, I'd probably do something like this:
Hash[line.scan(/(\w+):\s?(\w+)/)]
You can change the regex if it's not quite what you are looking for.
unit = "Nm³/hr Air"
# => "Nm³/hr Air"
unit.html_safe?
# => false
I want the result of unit.html_safe? as true for to display in the view.
Thanks in advance
Just do unit.html_safe in your view.
Calling html_safe on a String returns a new object that looks and acts like a String.
In your case, it's not returning string that why html_safe returns false.
Have a close look http://techspry.com/ruby_and_rails/html_safe-and-helpers-in-rails-3-mystery-solved/, i hope it will help you.
there is a string like this and it is stored in a file
#{date}abcde.doc
I want to be able to read this string and replace #{date} with
Date.today.strftime("%Y%m%d")
Is there any way to parse the template and do the evaluation? Thanks in advance!
Yes, however...
It would be easier if you used hash replacement, like this:
s = "%{date}abcde.doc"
s % { date: Time.now.strftime(etc) }
Or just use ERb.
As-is you're using string interpolation so it would need to be evaled, I think.