Handle apps without ActiveRecord #263
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vinistock
reviewed
Feb 20, 2024
| @@ -29,7 +29,7 @@ class Server | |||
| sig { params(model_name: String).returns(T.nilable(T::Hash[Symbol, T.untyped])) } | |||
| def resolve_database_info_from_model(model_name) | |||
| const = ActiveSupport::Inflector.safe_constantize(model_name) | |||
| unless const && const < ActiveRecord::Base && !const.abstract_class? | |||
| unless const && defined?(ActiveRecord) && const < ActiveRecord::Base && !const.abstract_class? | |||
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We might be able to support other backends (like Mongoid) if we shift this to check for features rather than inheritance. Would something like this work?
Suggested change
| unless const && defined?(ActiveRecord) && const < ActiveRecord::Base && !const.abstract_class? | |
| unless const && const.respond_to?(:columns) && !const.abstract_class? |
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It looks like we can't assume the existence of those methods:
irb(main):003* class Post
irb(main):004* include Mongoid::Document
irb(main):005* field :title, type: String
irb(main):006* field :body, type: String
irb(main):007* has_many :comments
irb(main):008> end
=>
#<Mongoid::Association::Referenced::HasMany:0x0000000116e39c18
@extension=nil,
@module_path="",
@name=:comments,
@options={},
@owner_class=Post,
@polymorphic=false,
@validate=true>
irb(main):009> Post.columns
(irb):9:in `<main>': undefined method `columns' for Post:Class (NoMethodError)
Post.columns
^^^^^^^^
irb(main):010> Post.abstract_class?
(irb):10:in `<main>': undefined method `abstract_class?' for Post:Class (NoMethodError)
Post.abstract_class?
^^^^^^^^^^^^^^^^
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The closest match would be fields:
irb(main):011> Post.fields
=>
{"_id"=>
#<Mongoid::Fields::Standard:0x000000011783f820
@default_name="___id_default__",
@default_val=#<Proc:0x0000000116fbe160 /Users/andyw8/.gem/ruby/3.2.1/gems/mongoid-8.1.4/lib/mongoid/fields.rb:137 (lambda)>,
@label=nil,
@name="_id",
@options=
{:default=>#<Proc:0x0000000116fbe160 /Users/andyw8/.gem/ruby/3.2.1/gems/mongoid-8.1.4/lib/mongoid/fields.rb:137 (lambda)>,
:pre_processed=>true,
:type=>BSON::ObjectId,
:klass=>Post},
@pre_processed=true>,
"title"=>#<Mongoid::Fields::Standard:0x0000000117838fc0 @default_val=nil, @label=nil, @name="title", @options={:type=>String, :klass=>Post}>,
"body"=>#<Mongoid::Fields::Standard:0x00000001178387a0 @default_val=nil, @label=nil, @name="body", @options={:type=>String, :klass=>Post}>}
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Ah, that's too bad. I thought there'd be a common interface for these. Thanks for looking into it.
vinistock
approved these changes
Feb 20, 2024
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Fixes #262
I tried to add a test which undefines
ActiveRecord:but it fails because of the ActiveSupport internals: