On Wed, Jan 4, 2017 at 8:57 AM Daynthan Kabilan <dayantha...@gmail.com>
wrote:
> Hi,
>
> I have a CSV upload option and need to create a table and model based on
> the CSV colums.
>
> We allow to upload different kind of CSV file formats and each file upload
> will create new table and info will be stored accordingly. I have created a
> table with columns based on CSV file header and also created a model base
> on CSV file name. But when i store the file details to specific table i
> faced error.
>
>
> def self.import(file, head, csvalue,fname)
>
> ...............
> ..............
>
> ActiveRecord::Schema.define do
> create_table "#{fname}" do |t|
> #(define your columns just as you would in a migration file)
> head.each do |h|
> t.text h
> end
> # t.string :my_string
> end
> end
>
> model_file = File.join("app", "models", fname.singularize+".rb")
> model_name = fname.singularize.capitalize
> File.open(model_file, "w+") do |f|
> f << "class #{model_name} < ActiveRecord::Base\nend"
> end
>
> # ss=model_name.new
> * p ss=model_name.constantize.new*
>
> ..............
> ...............
>
> file="#{fname}_#{cnt}"
> return file
> end
>
>
> How can declare the object for dynamic model. Because I couldn't store the
> values to new table.
>
> I faced the *Error* like *NameError (uninitialized constant Mytest):*
>
> Any idea how to solve this ?
>
I do not know if this will work, but you probably need to manually require
the model file you create before you try to constantize the model name. I
don't think Rails autoloading is working in this situation.
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