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Rails 6.0 was recently released.
Before Rails 6,
calling #html_safe?
on a slice of an HTML safe string
returns nil
.
1>> html_content = "<div>Hello, world!</div>".html_safe
2# => "<div>Hello, world!</div>"
3>> html_content.html_safe?
4# => true
5>> html_content[0..-1].html_safe?
6# => nil
Also,
before Rails 6,
the ActiveSupport::SafeBuffer#*
method
does not preserve the HTML safe status as well.
1>> line_break = "<br />".html_safe
2# => "<br />"
3>> line_break.html_safe?
4# => true
5>> two_line_breaks = (line_break * 2)
6# => "<br /><br />"
7>> two_line_breaks.html_safe?
8# => nil
#html_safe?
In Rails 6, both of the above cases have been fixed properly.
Therefore,
we will now get the status of #html_safe?
as expected.
1>> html_content = "<div>Hello, world!</div>".html_safe
2# => "<div>Hello, world!</div>"
3>> html_content.html_safe?
4# => true
5>> html_content[0..-1].html_safe?
6# => true
7
8>> line_break = "<br />".html_safe
9# => "<br />"
10>> line_break.html_safe?
11# => true
12>> two_line_breaks = (line_break * 2)
13# => "<br /><br />"
14>> two_line_breaks.html_safe?
15# => true
Please check rails/rails#33808 and rails/rails#36012 for the relevant changes.