main.tf

resource "newrelic_one_dashboard" "this" {
  name        = var.dashboard_name
  permissions = "public_read_only"
  # To create TABS in dashboard
  dynamic "page" {
    for_each = var.resources
    content {
      # To display TABS name in dashboard
      name = page.value["bu"]
      # To create graph in dashboard
      dynamic "widget_line" {
        # To create graph based on its title
        for_each = page.value["title"]
        content {
          # To display 3 graphs in each row that all column values should be 
          # 1, 5, 9 (1st row)
          # 1, 5, 9 (2nd row)
          # that's why (current cell + 4)
          column = (((widget_line.key % 3) * 4) + 1)
          height = 4
          # To display 3 graphs in each row that each rows values should be 
          # 1 (1st row)
          # 5 (2nd row)
          # 9 (3rd row)
          # that's why (current row + 4)
          row    = (abs(format("%.0f", (widget_line.key / 3))) * 4) + 1
          width  = 4
          title  = upper(page.value["title"][widget_line.key])
          nrql_query {
            query = page.value["nrql_query"][widget_line.key]
          }
        }
      }
    }
  }
}