Rails link_to how to show blank when null -

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i have in view:

 <td><%= link_to product_sale.product.consignor.try(:name), { controller: :consignors, action: :edit, id: product_sale.product.consignor.try(:id) }, :target => "_blank" %></td>

which in product_sale view links edit consignors products listed.

some product doesn't have consignor. when happens, shows /consignors/edit

how can show blank instead?

when show blank instead mean not show link? if so, can't conditionally call link_to helper:

<td><%= product_sale.product.consignor ? (link_to edit_consignor_path(product_sale.product.consignor) ) : '' %></td>

as long routes set correctly shouldn't need specifying controller, action , id either.

if want display more meaningful end user instead of default link add parameter before edit path:

<td><%= product_sale.product.consignor ? (link_to product_sale.product.consignor.name, edit_consignor_path(product_sale.product.consignor) ) : '' %></td>

and maybe consider setting variable readability:

<td><% consignor = product_sale.product.consignor %> <%= consignor ? (link_to consignor.name, edit_consignor_path(consignor) ) : '' %></td>

if aren't interesting in displaying other blank when no consignor set replace tertiary operator if statement suggested 2called-chaos:

<td><% consignor = product_sale.product.consignor %> <%= link_to consignor.name, edit_consignor_path(consignor) if consignor %></td>

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