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Switch from Globalize to Mobility #3360

Merged
merged 37 commits into from
May 25, 2018
Merged

Switch from Globalize to Mobility #3360

merged 37 commits into from
May 25, 2018

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bricesanchez
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@bricesanchez bricesanchez commented Mar 24, 2018

In order to translate our content we have been using a library called
Globalize. This has worked really well for us up until now, however a
new library has been released called Mobility which seems like it would
work better for our case.

This commit switches us from Globalize to Mobility in conjunction with
the release of refinerycms-i18n version 5.0.0.

This PR is stable, it needs code review but we have a green build:

Big thanks to @shioyama !

I will merge this PR after :

@@ -36,7 +26,7 @@ def self.options
friendly_id_options[:use] << :scoped
friendly_id_options.merge!(scope: :parent)
end
friendly_id_options[:use] << :globalize
friendly_id_options[:use] << :mobility
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Can you try moving this line up so it comes before :scoped in the array to friendly_id_options[:use] ?

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I've tried but it sadly does not change anything 😢

@@ -61,7 +49,7 @@ def should_generate_new_friendly_id?

has_many :parts, -> {
scope = order('position ASC')
scope = scope.includes(:translations) if ::Refinery::PagePart.respond_to?(:translation_class)
scope = scope.includes(:translations) if ::Refinery::PagePart.respond_to?(:mobility)
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I think rather than use a default_scope on everything, you could add it here:

scope = ::Refinery::PagePart.respond_to?(:mobility) ? i18n.includes(:translations) : all
scope = scope.order('position ASC')
scope

attribute :slug

after_save { translations.collect(&:save) }
default_scope { i18n }
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This might fix some issues, but ideally it would be better not to use it if possible.


# A join implies readonly which we don't really want.
Page.where(globalized_conditions).
Page.where(mobility_conditions).
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@shioyama shioyama Apr 5, 2018

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Page.i18n.where(mobility_conditions)

@@ -376,9 +364,9 @@ def puts_destroy_help
end

def slug_locale
return Globalize.locale if translation_for(Globalize.locale, false).try(:slug).present?
return Mobility.locale if slug_backend.read(Mobility.locale).present?
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I'm not quite sure about the context, but slug_backend.read(Mobility.locale) is basically the same as slug here. This will build the translation for that locale if none exists yet.

With Globalize you have translation_for(Globalize.locale, false) which will avoid building the translation for the current locale if none yet exists. This is a bit different.

Mobility does expose a method translation_for on the backend, but it has no option to override building an empty translation. You shouldn't really need that option though because Mobility anyway removes any empty translations before saving, so I think here you should be able to safely replace slug_backend.read(Mobility.locale) with just slug, and slug_backend.read(Refinery::I18n.default_frontend_locale) with just slug(locale: Refinery::I18n.default_frontend_locale).

You don't really need present? either since the Presence plugin converts any blank strings to nil for you already.

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shioyama commented Apr 5, 2018

I haven't tried running this PR locally, but just looking at the code I noticed a few places where perhaps the i18n scope was missing. Maybe that will get some more tests passing... not really sure.

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@shioyama Thank you for your review! I will take a look on this today :)

@@ -51,7 +51,7 @@ def translations_conditions(original_conditions)
translations_conditions = {}
original_conditions.keys.each do |key|
if translated_attributes.include? key.to_s
translations_conditions["#{Page.translation_class.table_name}.#{key}"] = original_conditions.delete(key)
translations_conditions["#{Page::Translation.table_name}.#{key}"] = original_conditions.delete(key)
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Do you even need to do this? Both Globalize and Mobility (with i18n scope) should seemlessly handle translated attributes as if they were normal attributes. What Refinery is doing here is basically what Mobility is doing here, which it automatically does when you call Post.i18n.where(title: "foo") etc.

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@shioyama shioyama Apr 5, 2018

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;tldr; I don't think you should really need the translations_conditions method with either Globalize or Mobility.

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@bricesanchez bricesanchez Apr 5, 2018

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You're probably right, it's the first time i dig into the i18n logic of Refinery, there is probably legacy things we don't ever need now.

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@bricesanchez do you want to try removing it? I believe it was just a performance optimisation to get everything loaded in the single query.

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@bricesanchez bricesanchez Apr 11, 2018

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@parndt i had a lot of failling specs (108 fails) when i tried to removed this method:

  108) Crudify xhr_paging performs ajax paging of index
       Failure/Error: stmt = SQLite3::Statement.new( self, sql )

       ActiveRecord::StatementInvalid:
         SQLite3::SQLException: no such column: refinery_pages.locale: SELECT  "refinery_pages".* FROM "refinery_pages" INNER JOIN "refinery_page_translations" "translations_refinery_pages" ON "translations_refinery_pages"."refinery_page_id" = "refinery_pages"."id" INNER JOIN "refinery_page_translations" ON "refinery_page_translations"."refinery_page_id" = "refinery_pages"."id" AND "refinery_page_translations"."locale" = 'en' WHERE "refinery_pages"."locale" = 'en' AND "refinery_pages"."parent_id" IS NULL AND "refinery_page_translations"."slug" = ? ORDER BY "refinery_pages"."id" ASC LIMIT ?
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:91:in `initialize'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:91:in `new'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:91:in `prepare'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/2.5.0/monitor.rb:226:in `mon_synchronize'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/2.5.0/monitor.rb:226:in `mon_synchronize'
       # ./pages/lib/refinery/pages/finder.rb:122:in `parent_page'
       # ./pages/lib/refinery/pages/finder.rb:106:in `find'
       # ./pages/lib/refinery/pages/finder.rb:83:in `find'
       # ./pages/lib/refinery/pages/finder.rb:149:in `find'
       # ./pages/lib/refinery/pages/finder.rb:9:in `by_path_or_id'
       # ./pages/app/models/refinery/page.rb:80:in `find_by_path_or_id'
       # ./pages/app/controllers/refinery/pages_controller.rb:110:in `call'
       # ./pages/app/controllers/refinery/pages_controller.rb:75:in `find_page'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/request_store-1.4.1/lib/request_store/middleware.rb:19:in `call'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/2.5.0/webrick/httpserver.rb:140:in `service'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/2.5.0/webrick/httpserver.rb:96:in `run'
       # /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/2.5.0/webrick/server.rb:307:in `block in start_thread'
       # ------------------
       # --- Caused by: ---
       # SQLite3::SQLException:
       #   no such column: refinery_pages.locale
       #   /Users/bricesanchez/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:91:in `initialize'

I had seen that i need this method so i kept it.

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Note that you don't need joins(:translations) here, Mobility will do that for you in the i18n scope.

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Actually wait, that doesn't quite work...

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Ok, long story short, this requires shioyama/mobility#51 to really work. The problem is that Mobility joins ON the current locale, and this clobbers this refinery query so you can't query on more than one locale. So for now, I'd say just leave this, and once shioyama/mobility#51 is done it should be refactorable.

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btw, good test coverage! Only 5 tests ended up failing, but they highlighted the problem here.

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I'm glad! 🥇

end

add_index :refinery_image_translations, :refinery_image_id, name: :index_refinery_image_translations_on_refinery_image_id
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@shioyama shioyama Apr 5, 2018

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This index has been removed in the generators in the latest version of Mobility (on master), see shioyama/mobility#198. I think you don't need this one (since it's covered by the last index below on the combo of refinery_image_id and locale).

bricesanchez added a commit that referenced this pull request Apr 6, 2018
@bricesanchez
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Thanks @shioyama for your help! Now there is just 11 fail specs.

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shioyama commented Apr 6, 2018

Removing translations_conditions didn't work? That's strange...

@bricesanchez
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bricesanchez commented Apr 6, 2018

Removing translations_conditions didn't work? That's strange...

I've revert it for now because it causes more fail specs.
Most of my problems was caused by should_generate_new_friendly_id?

I have to clean up my PR too.

@bricesanchez
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Hi @parndt and @shioyama ! The last 2 failing specs of this PR are caused by seo_meta and mobility, do you have any idea to fix them?

@@ -425,12 +425,12 @@ def standard_page_menu_items_exist?
let(:nested_page_slug) { 'nested_page' }

let!(:nested_page) do
Globalize.fallbacks = [:ru]
_page = Globalize.with_locale(:en) {
Mobility.new_fallbacks[:ru]
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Do you need this? I'm planning to deprecate new_fallbacks. I don't think this does anything here.

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If you want to just set the global fallbacks for this one spec, couldn't you set I18n.fallbacks instead?

@@ -164,20 +150,20 @@ def nullify_duplicate_slugs_under_the_same_parent!
end

def translated_to_default_locale?
persisted? && translations.any?{ |t| t.locale == Refinery::I18n.default_frontend_locale}
persisted? && translations.any?{ |t| t.locale.to_sym == Refinery::I18n.default_frontend_locale}
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Nice catch! Mobility doesn't convert translation locales to symbols like Globalize does.

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Added a note about this to the Mobility wiki page on migrating from Globalize.

@@ -20,7 +20,7 @@ Gem::Specification.new do |s|
s.test_files = `git ls-files -- spec/*`.split("\n")

s.add_dependency 'refinerycms-dragonfly', '~> 1.0'
s.add_dependency 'globalize', ['>= 5.1.0.beta1', '< 5.2']
s.add_dependency 'mobility', '~> 0.5'
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Isn't it a bit strange to have the mobility dependency in refinerycms-images ? I had trouble tracking down where it was. I would expect it to be in refinerycms-i18n.

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You're right, it's a bit strange, i think it's because refinerycms-i18n was not a dependency of refinerycms-core a long time ago.

We could add a dependency of mobility gem in refinerycms-i18n.

What do you think @parndt?

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Unless I'm mistaken it's because refinerycms-images doesn't depend on refinerycms-i18n so in order for images to be translated it has to depend on the translation library?

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Unless I'm mistaken it's because refinerycms-images doesn't depend on refinerycms-i18n

You're right

so in order for images to be translated it has to depend on the translation library?

You're right but refinerycms-core depends to refinerycms-i18n:

s.add_dependency 'refinerycms-i18n', ['~> 4.0', '>= 4.0.0']

And refinerycms-images depends to refinerycms-core.

So what should we do @parndt?

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ah well in that case this library shouldn't duplicate dependencies 😄

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I'd go with @shioyama's suggestion

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ah well in that case this library shouldn't duplicate dependencies

It does not duplicate dependencies because refinerycms-i18n has no dependencies to mobility nor globalize: https://github.com/refinery/refinerycms-i18n/blob/master/refinerycms-i18n.gemspec#L19-L20

even if we call Mobility in this gem: https://github.com/refinery/refinerycms-i18n/pull/76/files

So i will create a dependency to mobility in refinerycms-i18n like it should be.

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@bricesanchez The problem with seo_meta has to do with how Mobility handles dirty attributes, which is slightly different from Globalize.

Refinery has seo_meta on the model's translations, but when the seo_meta changes, Mobility picks it up as a change on the model, not the translation. So it doesn't save the translation, and loses the association to the seo meta, which is why it comes out nil.

I'm trying to figure out if/how Mobility should handle this.

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shioyama commented Apr 10, 2018

So after a lot of digging through Mobility, Globalize, SeoMeta, and Rails, I understand the issue here and have a quick fix, although not terribly elegant.

Just add an after_save callback to the Refinery::Pages::Core::BaseModel class like this:

after_save { translations.find { |t| t.locale == Mobility.locale.to_s }.seo_meta.save! }

This will force the model to save seo meta for the translation in the current locale. I find this fixes specs.

In shioyama/mobility#202, I'm adding an extension to the translations association which will make this a bit cleaner, so you will be able to do:

after_save { translations.in(Mobility.locale).seo_meta.save! }

if you don't mind waiting until I release 0.6.0 (should be sometime this week), this would be nicer.

The problem, in a nutshell, is that Mobility detects that there is a change in the translation and marks it as a change to a virtual attribute meta_description_en. For a normal column on the translations table, this works fine, but in this case SeoMeta is delegating meta_description setter/getter to its association, so this fails to trigger an update to the translation, and thus the SeoMeta also does not get updated.

By using after_save on the parent model, we just skip the translation entirely and force the seo meta to get updated.

I don't think I want to do anything special in Mobility to handle this case since it's actually quite tricky; I don't think most people will have delegated methods on their model translation class.

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I've merged shioyama/mobility#202, so you can point to master for now. I'll release a new version soon.

bricesanchez and others added 20 commits May 25, 2018 11:10
and tidy up model for mobility and friendly usage
It will fix site_bar edit link with switch_locale param presence
This will fix: ActiveModel::UnknownAttributeError:
       unknown attribute 'locale' for Refinery::PagePart.
At this time, only refinerycms-pages needs this dependency.
This dependency will be added to refinerycms-i18n which is a core dependency
because 0.6.0 is released
@parndt parndt changed the title WIP: Feature/mobility Switch from Globalize to Mobility May 25, 2018
@parndt parndt merged commit d181fbb into master May 25, 2018
@parndt parndt deleted the feature/mobility branch May 25, 2018 01:50
parndt added a commit to parndt/refinerycms-wymeditor that referenced this pull request Sep 23, 2019
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