CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-5
hugalves
hugalves

Reputation: 373

Using a helper on options_for_select

I have a select with all months of the year as numbers (1,2,3...12) and a method which converts the number of the month to its name. Ex: (1->January, 2->February...)

I'd like to use it on a select, showing the name of the month instead of the number.

My question is, how do I generate a select passing this method to my options_for_select below?

<div class="ls-custom-select">
  <%=
    form.select(
        :month,
        options_for_select((1..12), selected: @current_month),
        {},
        { class: "ls-select" }
      )
  %>
</div>

Thanks in advance

Upvotes: 0

Views: 301

Answers (1)

max
max

Reputation: 101811

You can get seperate text and values by using an array of pairs:

options_for_select([["January", 1], ["February", 2]])
# => <option value="1">January</option>
# => <option value="2">February</option>

You can get localized month names by using the Rails 18n module:

(1..12).to_a.zip(I18n.t("date.month_names").drop(1))
# => [[1, "January"], [2, "February"], [3, "March"], [4, "April"], [5, "May"], [6, "June"], [7, "July"], [8, "August"], [9, "September"], [10, "October"], [11, "November"], [12, "December"]]

.zip merges two arrays together into pairs. .drop(1) is needed since the first element in the month_names array is nil (there is no month 0).

<div class="ls-custom-select">
  <%=
    form.select(
        :month,
        options_for_select(
          (1..12).to_a.zip(I18n.t("date.month_names").drop(1),
          @current_month # selected
        )
        {},
        { class: "ls-select" }
    )
  %>
</div>

You don't need to write a method to get month names. Use I18n.t("date.month_names")[number]. Or if localization is not important use Date::MONTHNAMES[number].

Upvotes: 1

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