Rails - String concatenation issue while processing an array

Question

I am trying to process the results of an array into a string to pass for a search. I want to build a string from the array that would look something like

("categories.name like '%Forms%' or categories.name like '%Apples%'")

   serialize :category, JSON
 if category.count > 1 && category.index != 0
           $search_global.category.each do |cat_name|
                      cat_name.slice '" '
                      # cat_name
                      $array_count = $array_count + 1
                      if cat_name != ''
                        $inside_count = $inside_count +1
                        $cat_name_2 = "categories.name like %" + $cat_name_2 + cat_name + "% or " + $inside_count.to_s

                      end
            end

  end

If I select one item, it works fine as in

categories.name like %Forms% or 1

Please note that I am including the inside count just to get a better idea of what is happening.

The problem I have is when I select 2 or more items. categories.name like % is repeated twice and then the array items or listed as in

categories.name like %categories.name like %Calendar% or 1Forms% or 2

I can't seem to figure out why the concatenation isn't working as I expected.

margo · Accepted Answer · 2015-12-29 15:18:57Z

1

$cat_name_2 = "categories.name like %" + $cat_name_2 + cat_name + "% or " + $inside_count.to_s

Your are using $cat_name_2 as the asignee as well as inside the assignment statement.

answered Dec 29, 2015 at 15:18

margo

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