Attacher#column_data name much better indicates strong connection
Attacher#data. Attacher#column...

Shrine::Storage::Memory is something I use a lot, especially in
self-contained scripts where I d...

It will not log only "expensive" operations, it will log specific
operations regardless of wheth...

People have often missed that this plugin exists, and I think it's
partly because it's one of fe...

It's more important, so it should be higher.

This is a reimplementation of the versions plugin. The versions plugin
had several problems:

* ...

Ruby developers like to use symbols and string interchangeably, and
Shrine supports this reasona...

We want Shrine to be as convenient as possible to use. This can be a lot
to write:

Shrine::At...

Previously Shrine.opts was duplicated only one level in depth, which
means that plugins needed t...

Some plugins might need to ensure a file is attached before performing
some operation. So we add...

There is no need to store it, as it's used only at time of
configuration. This simplifies option...

This is possible as of recently, and it obviously looks nicer than
string keys.

We have to work around Active Record's bad connection pool
implementation, which ties connection...

The API docs should serve as a method reference, plugin documentation
should be more high level.

That is more correct than a generic Shrine::Error.

The main storage in the Attacher is the permanent storage, the temporary
storage is just there t...

We want to support the scenario when record data attribute value is a
symbolized hash, so we add...

One of the reasons why we've split Attacher#destroy_attached and
Attacher#destroy is so that we ...

This was removed in the big Attacher refactor, because entity/model is
loaded only after initial...

This idea was taken from Roda, but I don't see any advantage in using
this plugin over overridin...

Sometimes people might want to return only the storage identifiers of
temporary and permanent st...

YAML, Oj, MultiJson, MessagePack and probably many other libraries
implement the load/dump inter...

There are some conventions that are useful to follow when writing an ORM
plugin to make ORM plug...

There are some decisions made in database plugins specifically so that
they work with the backgr...

We're not actually using it, so it adds an unnecessary layer on top of
Minitest.

We have many guides that conceptually fall into different categories, so
we group them on the we...

I think the previous categorization was too focused on the type of
plugin, rather than the area ...

MRI 2.4+ allows `nil.dup`, but in MRI 2.3 that still raises

TypeError: can't dup NilClass

So...

This override was unintentionally done inside the :callbacks
conditional, so we move it out.

Storage#open not accepting options will be deprecated in Shrine 3.0, so
we update the storage li...

This was accidentally removed after the big Attacher refactoring, but we
can easily add it back.

People might still be overriding Shrine#process directly, and expecting
returning nil to be a no...

The #persist method will become a convention for ORM plugins starting
from Shrine 3.0, so we add...

This is consistent with Attacher#promote returning the promoted file.

It's useful to be able to instantiate an UploadedFile object directly
using symbol keys. This ma...

We don't want UploadedFile implementation to couple to the exact data
hash that was passed in, s...

Supporting `Storage#open` that doesn't accept additional options
complicates implementation of S...

When using the model plugin, the user will usually want to have file
data with re-extracted meta...

Previously we were sending a `download.shrine` event whenever
UploadedFile#open is called, which...

This allows Shrine::Storage::Memory#open to accept any additional
arguments, which is useful in ...

This format was actually creating a newline, which I wasn't intended. So
we just inline it.

People might want to pass additional options for metadata extraction on
assignment.

There are many different attacher operations that could take options:

* attaching to cache
* at...

The generic validation functionality from Shrine::Attacher has been
extracted into the new valid...

Class#attr_writer is still private in those versions.

Problem
=======

Shrine::Attacher has been coupled to usage with mutable structs, which
is assoc...

* Fix activerecord plugin's after_commit callbacks to work in Rails 3.

Because the transactio...

This deletion will no longer be backgroundable with new backgrounding
API, so it doesn't pay off...

This functionality will be supported by default.

It relies on the removed hooks plugin. With the new derivatives people
will be able to paralleli...

It's complicating the internal implementation, and it's not worth it
anymore, now that we'll hav...

By default, when copying an S3 object, the destination object will
retain any source object meta...

That's consistent with Shrine#storage_key which returns a Symbol as
well. And we also show using...

Capybara and Mail gem, both of which Rails depends on, switched from the
mime-types to the mini_...

Even though Ruby 2.3 is EOL, people still on Rails 3.2.x are stuck with
Ruby 2.3, because Ruby 2...

These were only there so that the user can override them, before we
transitioned to class method...