Hi Daynthan,
I have the same problem. So I see you got working solution.
Please, can you post final version of working important files?
Thank you.
On Friday, January 6, 2017 at 2:45:29 PM UTC+1, daynthan kabilan wrote:
>
> Thank you Tamosus pontik.
>
> I have done the task using this keyword require "#{dynamic_model_name}"
>
> On Thu, Jan 5, 2017 at 7:24 PM, tamouse pontiki <tamous...@gmail.com
> <javascript:>> wrote:
>
>> On Thu, Jan 5, 2017 at 2:40 AM Daynthan Kabilan <dayan...@gmail.com
>> <javascript:>> wrote:
>>
>>> Hi Tamosus pontik,
>>>
>>> Thanks for your reply.
>>> The model file is created dynamically based on this code.
>>>
>>
>> And after you write that file, you need to require it for Rails to use
>> it. That's why the constant is undefined.
>>
>> Do you know how the require statement works in Ruby?
>>
>>
>>> 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
>>>
>>> But i need to store the values to specific tables.
>>> Note: I am not running migration for the dynamic tables(model)
>>>
>>> On Wed, Jan 4, 2017 at 10:07 PM, tamouse pontiki <tamous...@gmail.com
>>> <javascript:>> wrote:
>>>
>>>>
>>>>
>>>> On Wed, Jan 4, 2017 at 8:57 AM Daynthan Kabilan <dayan...@gmail.com
>>>> <javascript:>> 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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