CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3
HUSTEN
HUSTEN

Reputation: 5197

How can I customize this if statement?

I want to show "not selected" when @user.user_profile.prefecture.name if [email protected]_profile.prefecture.blank? was blank.

How can I customize this code?

controller

@user.profile.prefecture.name if [email protected]?

Upvotes: 2

Views: 57

Answers (3)

M.Octavio
M.Octavio

Reputation: 1808

Updated:

1- An object is blank if it’s false, empty, or a whitespace string

2- Unless statement code to execute unless condition false

Answer:

"Not selected" unless [email protected]?

Explain: @user.profile.prefecture.blank? will return true everytime that @user.profile.prefecture it’s false, empty, or a whitespace string for what the negation operator transforms that into false so the unless code section can be executed.

This approach it's very 'Ruby' to me and should be pretty easy to understand.

Upvotes: -1

user229044
user229044

Reputation: 239311

You could use the ternary operator, which is slightly verbose:

@user.profile.prefecture.blank? ? "Not selected" : @user.profile.prefecture.name

Or, if prefecture is actually nil/not-nil, get rid of the blank?:

@user.profile.prefecture ? @user.profile.prefecture.name : "Not selected"

Finally, you could get slightly more fancy with try and ||, which most proficient Ruby developers will find quite readable:

@user.profile.prefecture.try(:name) || "Not selected"

Upvotes: 3

Benjamin Bouchet
Benjamin Bouchet

Reputation: 13181

Like this

if @user.profile.prefecture.blank?
  'not selected'
else
  @user.profile.prefecture.name
end

Upvotes: 2

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