UITableView auto layout problem with TeaCup

gistfile1.rb

# -------------------------------------------------------------------------------------
class Search < UIViewController
# -------------------------------------------------------------------------------------
    stylesheet :search

    layout do
        @back = subview UIView, :back

        @logo = subview UIView, :logo do
            @logo_image = subview UIView, :logo_image
        end

        @title = subview UIView, :title do
            @title_label = subview UILabel, :title_label, text: "search"._
        end

        @arrow_up = subview UIView, :arrow_up

        @table = subview UITableView, :table, delegate: self, dataSource: self

        hh = BAGDevice.height()
        ww = BAGDevice.width()
        ww_half = ww/2

        auto do
            metrics "margin" => 20

            vertical "|-36-[logo(==100)]-margin-[title(==30)]-margin-[table(>=1)]-45-|"
            vertical "|-(>=1)-[arrow_up(==16)]-15-|"

            horizontal "|-#{ww_half-50}-[logo(==100)]-#{ww_half-50}-|"
            horizontal "|-18-[title]-18-|"
            horizontal "|-#{ww_half-16}-[arrow_up(==32)]-#{ww_half-16}-|"
            horizontal "|[table]|"
        end
    end
    
# -------------------------------------------------------------------------------------
    def numberOfSectionsInTableView table
# -------------------------------------------------------------------------------------
        1
    end

# -------------------------------------------------------------------------------------
    def tableView table, numberOfRowsInSection:section
# -------------------------------------------------------------------------------------
        BAG.search_result.count()
    end

# -------------------------------------------------------------------------------------
    def tableView table, cellForRowAtIndexPath:index_path
# -------------------------------------------------------------------------------------
        cell_id = "search_cell"
        cell = table.dequeueReusableCellWithIdentifier(cell_id) || SearchCell.alloc.initWithStyle(UITableViewCellStyleDefault, reuseIdentifier:cell_id)
        cell.on_content(index_path.row) if BAG.search_result[index_path.row]

        cell
    end
    
    # ... other stuff
end

# 


# -------------------------------------------------------------------------------------
class SearchCell < UITableViewCell
# -------------------------------------------------------------------------------------
    include Teacup::Layout
    stylesheet :search

# -------------------------------------------------------------------------------------
    def initWithStyle style, reuseIdentifier: identifier
# -------------------------------------------------------------------------------------
        super

        layout(self.contentView) do
        @back = subview UIView, :back

        @logo = subview UIView, :logo do
            @logo_image = subview UIView, :logo_image
        end

        @title = subview UIView, :title do
            @title_label = subview UILabel, :title_label, text: "in your BAG"._
        end

        @arrow_up = subview UIView, :arrow_up

        @table = subview UITableView, :table, delegate: self, dataSource: self

        hh = BAGDevice.height()
        ww = BAGDevice.width()
        ww_half = ww/2

        auto do
            metrics "margin" => 20

            vertical "|-36-[logo(==100)]-margin-[title(==30)]-margin-[table(>=1)]-45-|"
            vertical "|-(>=1)-[arrow_up(==16)]-15-|"

            horizontal "|-#{ww_half-50}-[logo(==100)]-#{ww_half-50}-|"
            horizontal "|-18-[title]-18-|"
            horizontal "|-#{ww_half-16}-[arrow_up(==32)]-#{ww_half-16}-|"
            horizontal "|[table]|"
        end
        self.accessoryType  = UITableViewCellAccessoryNone
        self.selectionStyle = UITableViewCellSelectionStyleNone

        self
    end
    
    # ... other stuff 
end