Rails Admin和印象派宝石之间的冲突

Question

I'm using the latest version of the Impressionist and Rails Admin gems, and wondering if anyone could shed some light on an annoying conflict I'm experiencing. The problem is roughly documented here - https://github.com/sferik/rails_admin/issues/1315 , yet the vaguely described solution is not working for me. When I have the line is_impressionable in my Listing model, I get an error when starting my Rails server with rails s:

    ...rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.2/lib/active_record/dynamic_matchers.rb:22:in `method_missing': undefined local variable or method `is_impressionable' for Listing(no database connection):Class (NameError)

If I first start the server, and then add the 'is_impressionable' line, everything works fine, so the problem only occurs during initialization. I don't fully understand the initialization process, so am not sure how to go about getting this to work.

I have tried moving all my rails_admin model configuration options to their respective models, rather than in the initializer, which had no effect. I also have the following line in my initializer:

    config.included_models = [Listing,ListingImage,AllOtherModelsHere...]

I have tried adding single quotes around these model names, which results in the following errors, as described in the github issue here

    [RailsAdmin] Could not load model Listing, assuming model is non existing. (undefined local variable or method `is_impressionable' for Listing(no database connection):Class)

Any ideas what else I can try to make these gems work together? I don't want to have to remove the is_impressionable line every time I want to restart the server or generate a migration...

Answer 1

Not sure if the same issue that I had but yet I will post what worked for me just in case someone struggles with this too:

Im on a ruby 2.1.5 project with rails 4.2.0 and among other gems I'm using rails admin. I run into several weird problems trying to set this up. For instance if I added the is_impressionable call within one of my models for some reason the execution of that file stopped there and I started getting weird errors like any method declared below the is_impressionable failed with undefined error. So what I end up doing was:

class MyModel < ActiveRecord::Base
  include Impressionist::IsImpressionable
  is_impressionable
end

So this solved my issue and now i can access @my_model_instance.impression_count as expected.

Answer 2

我在初始化程序'Klass'.constantize Klass每次出现都更改为'Klass'.constantize 。