ManageIQ/manageiq-ui-classic

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app/controllers/condition_controller.rb

Summary

Maintainability
D
2 days
Test Coverage
F
24%

Method condition_edit has a Cognitive Complexity of 79 (exceeds 5 allowed). Consider refactoring.
Open

  def condition_edit
    case params[:button]
    when "cancel"
      id = params[:id] || "new"
      return unless load_edit("condition_edit__#{id}")
Severity: Minor
Found in app/controllers/condition_controller.rb - About 1 day to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Cyclomatic complexity for condition_edit is too high. [33/11]
Open

  def condition_edit
    case params[:button]
    when "cancel"
      id = params[:id] || "new"
      return unless load_edit("condition_edit__#{id}")

Checks that the cyclomatic complexity of methods is not higher than the configured maximum. The cyclomatic complexity is the number of linearly independent paths through a method. The algorithm counts decision points and adds one.

An if statement (or unless or ?:) increases the complexity by one. An else branch does not, since it doesn't add a decision point. The && operator (or keyword and) can be converted to a nested if statement, and ||/or is shorthand for a sequence of ifs, so they also add one. Loops can be said to have an exit condition, so they add one. Blocks that are calls to builtin iteration methods (e.g. `ary.map{...}) also add one, others are ignored.

def each_child_node(*types)               # count begins: 1
  unless block_given?                     # unless: +1
    return to_enum(__method__, *types)

  children.each do |child|                # each{}: +1
    next unless child.is_a?(Node)         # unless: +1

    yield child if types.empty? ||        # if: +1, ||: +1
                   types.include?(child.type)
  end

  self
end                                       # total: 6

Method condition_edit has 82 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def condition_edit
    case params[:button]
    when "cancel"
      id = params[:id] || "new"
      return unless load_edit("condition_edit__#{id}")
Severity: Major
Found in app/controllers/condition_controller.rb - About 3 hrs to fix

Method build_expression_vars has 29 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def build_expression_vars
    @edit[:new][:expression] = @condition.expression.kind_of?(MiqExpression) ? @condition.expression.exp : nil
    @edit[:new][:applies_to_exp] = @condition.applies_to_exp.kind_of?(MiqExpression) ? @condition.applies_to_exp.exp : nil

    # Populate exp editor fields for the expression column
Severity: Minor
Found in app/controllers/condition_controller.rb - About 1 hr to fix

Method condition_build_edit_screen has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
Open

  def condition_build_edit_screen
    @edit = {}
    @edit[:new] = {}
    @edit[:current] = {}

Severity: Minor
Found in app/controllers/condition_controller.rb - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method build_expression_vars has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
Open

  def build_expression_vars
    @edit[:new][:expression] = @condition.expression.kind_of?(MiqExpression) ? @condition.expression.exp : nil
    @edit[:new][:applies_to_exp] = @condition.applies_to_exp.kind_of?(MiqExpression) ? @condition.applies_to_exp.exp : nil

    # Populate exp editor fields for the expression column
Severity: Minor
Found in app/controllers/condition_controller.rb - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method condition_build_edit_screen has 26 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def condition_build_edit_screen
    @edit = {}
    @edit[:new] = {}
    @edit[:current] = {}

Severity: Minor
Found in app/controllers/condition_controller.rb - About 1 hr to fix

Method condition_field_changed has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

  def condition_field_changed
    return unless load_edit("condition_edit__#{params[:id]}")

    @condition = @edit[:condition_id] ? Condition.find(@edit[:condition_id]) : Condition.new

Severity: Minor
Found in app/controllers/condition_controller.rb - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Avoid more than 3 levels of block nesting.
Open

          if params[:button] == "save"
            flash_msg = _("Condition \"%{name}\" was saved") % {:name => @edit[:new][:description]}
          else
            flash_msg = _("Condition \"%{name}\" was added") % {:name => @edit[:new][:description]}
          end

Checks for excessive nesting of conditional and looping constructs.

You can configure if blocks are considered using the CountBlocks option. When set to false (the default) blocks are not counted towards the nesting level. Set to true to count blocks as well.

The maximum level of nesting allowed is configurable.

Avoid more than 3 levels of block nesting.
Open

          javascript_redirect(:action => params[:button] == "add" ? "show_list" : @lastaction, :id => params[:id], :flash_msg => flash_msg)

Checks for excessive nesting of conditional and looping constructs.

You can configure if blocks are considered using the CountBlocks option. When set to false (the default) blocks are not counted towards the nesting level. Set to true to count blocks as well.

The maximum level of nesting allowed is configurable.

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def build_expression(parent, model)
    @edit[:new][:expression] = parent.expression.kind_of?(MiqExpression) ? parent.expression.exp : nil
    # Populate exp editor fields for the expression column
    @edit[:expression] ||= ApplicationController::Filter::Expression.new
    @edit[:expression][:expression] = [] # Store exps in an array
Severity: Major
Found in app/controllers/condition_controller.rb and 1 other location - About 2 hrs to fix
app/controllers/mixins/policy_mixin.rb on lines 360..376

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 106.

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

Further Reading

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