ruby on rails - How to use local variables when calling show on an object i.e. @object.this_#{variable}? -

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• how turn string method call? [duplicate] 3 answers

is there way pass variable through instance in show partial? i'm creating service follows crud , want able iterate instanced variable. can create passing partial so:

in parent view:

<%= form_for(@report) |f| %>      <%= render :partial => "reports/forms/partial_form", :locals => {:g => f, :var => "01"} %> <% end %> 

in partial view:

<label><%= "enter data variable #{lane_number}" %></label> <%= g.text_field :"variable_#{var}" %> 

this useful variables in partial have similar-enough naming convention use same var iterate through several items. works fine.

i similar when viewing input data, can't figure out how pass var instance variable.

in parent view:

<%= render :partial => "reports/shows/partial_show", :locals => {:var => "01"} %> 

in partial view:

<%= @report.variable_#{var} %> 

i know #{var} used string interpolation (which why works in original create), there way me passing variable partial?

you can use metaprogramming variable value because call method:

<%= @report.send("variable_#{var}") %>