CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
Jack
Jack

Reputation: 19

how to add a variable within each loop

In code:

<% @offer2.each do |offer|%>

<% @menuName=Menu.find_by_menu_item_name(offer.menuName_get)%>

<% @line_item.each do |line_item|%>

<%@validPrice=(@menuName.price)*(offer.disAmountOrPercentage)%>
<%end%>
<%end%>

I am new in rails.I want to add @validPrice += @validPrice but it's not working inside the loop or outside the loop.So how do I get the sum of this variable.

Upvotes: 0

Views: 494

Answers (3)

Gagan Gami
Gagan Gami

Reputation: 10251

Try this:

<% @validPrice = 0 %> #initialized with zero

<% @offer2.each do |offer|%>  # 1st loop
 <% @menuName=Menu.find_by_menu_item_name(offer.menuName_get)%>
    <% @line_item.each do |line_item|%>  # 2nd loop
        <% @validPrice += (@menuName.price)*(offer.disAmountOrPercentage) %>
    <%end%>
 <%= @validPrice %>  # you can access and print @validprice out of 2nd loop here
<%end%>

Upvotes: 1

user2473975
user2473975

Reputation:

Try this 

<% @offer2.each do |offer|%>
  <% @menuName=Menu.find_by_menu_item_name(offer.menuName_get)%>
  <% @line_item.each do |line_item|%>
    <%= validPrice = (@menuName.price)*(offer.disAmountOrPercentage) %> 
  <%end%> 
<%end%>

Upvotes: 0

Debadatt
Debadatt

Reputation: 6015

You should declare @validPrice= 0 on the top of the loop. So that it will not initialize repeatedly.

<% validPrice = 0 %>

<% @offer2.each do |offer|%>
  <% @menuName=Menu.find_by_menu_item_name(offer.menuName_get)%>
  <% @line_item.each do |line_item|%>
    <% validPrice += (@menuName.price)*(offer.disAmountOrPercentage) %> 
  <%end%> 
<%end%>

It will be better if you would make model method for this summations, rather to run in view pages.

Upvotes: 0

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