The
sprintf method
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has a
reference by name
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format option:
sprintf("%<foo>d : %<bar>f", { :foo => 1, :bar => 2 }) # => 1 : 2.000000
sprintf("%{foo}f", { :foo => 1 }) # => "1f"
The format identifier %<id> stands for different data types to be formatted, such as %f for floats:
sprintf('%f', 1) # => 1.000000
Example:
This is quite useful to replace long strings such as API endpoints which might take several parameters.
In this example we are using %s identifier to replace strings.
class Fetcher
FIND_URI = 'https://someapi.com/3/search/record?query=%<search_word>s&include_many=%<include_many>s&language=en-US&page=1'
# some public methods
private
def find_endpoint
format(FIND_URI, { search_word: @record.name, include_many: 'false' })
end
end
Note that the example uses the format-alias for sprintf since it makes semantically more sense within this context.
On Strings you can also use the method % instead of format or sprintf.
FIND_URI % { search_word: @record.name, include_many: 'false' }
Posted by Felix Eschey to makandra dev (2023-11-23 18:14)