Similar blocks of code found in 2 locations. Consider refactoring. Open
def index
@users = User.all
csv_string_users = CSV.generate do |csv|
csv << ["Id", "Username", "Name", "Email"]
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Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 40.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication
's documentation for more information about tuning the mass threshold in your .codeclimate.yml
.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
end
at 32, 10 is not aligned with csv_string_users = CSV.generate do |csv|
at 27, 8. Open
end
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- Exclude checks
This cop checks whether the end keywords are aligned properly for do end blocks.
Three modes are supported through the EnforcedStyleAlignWith
configuration parameter:
start_of_block
: the end
shall be aligned with the
start of the line where the do
appeared.
start_of_line
: the end
shall be aligned with the
start of the line where the expression started.
either
(which is the default) : the end
is allowed to be in either
location. The autofixer will default to start_of_line
.
Example: EnforcedStyleAlignWith: either (default)
# bad
foo.bar
.each do
baz
end
# good
variable = lambda do |i|
i
end
Example: EnforcedStyleAlignWith: startofblock
# bad
foo.bar
.each do
baz
end
# good
foo.bar
.each do
baz
end
Example: EnforcedStyleAlignWith: startofline
# bad
foo.bar
.each do
baz
end
# good
foo.bar
.each do
baz
end