Fixed #323 Allow users to select a language in settings (GRN-17) (#324)

* <Added ui for language setting and migration>

* <Option to choose languages added>

* <Fixed code style>

* <Added Rspec tests>

* <sync db>

* <Sync db>

* <Generalized language settings>

* <Fixed flash message>

* Fixed las issue with i18n fallback

* <Modified fallback config>

* <Fixed code style>

app/controllers/application_controller.rb

@@ -39,7 +39,15 @@ class ApplicationController < ActionController::Base
 
   # Sets the appropriate locale.
   def set_locale
-    I18n.locale = http_accept_language.language_region_compatible_from(I18n.available_locales)
+    update_locale(current_user)
+  end
+
+  def update_locale(user)
+    I18n.locale = if user && user.language != 'default'
+      user.language
+    else
+      http_accept_language.language_region_compatible_from(I18n.available_locales)
+    end
   end
 
   def meeting_name_limit

app/controllers/users_controller.rb

@@ -93,6 +93,7 @@ class UsersController < ApplicationController
       @user.update_attributes(email_verified: false)
       redirect_to edit_user_path(@user), notice: I18n.t("info_update_success")
     elsif @user.update_attributes(user_params)
+      update_locale(@user)
       redirect_to edit_user_path(@user), notice: I18n.t("info_update_success")
     else
       render :edit, params: { settings: params[:settings] }
@@ -171,6 +172,6 @@ class UsersController < ApplicationController
 
   def user_params
     params.require(:user).permit(:name, :email, :image, :password, :password_confirmation,
-      :new_password, :provider, :accepted_terms)
+      :new_password, :provider, :accepted_terms, :language)
   end
 end

app/helpers/application_helper.rb

@@ -46,6 +46,15 @@ module ApplicationHelper
     Rails.configuration.bigbluebutton_endpoint_default == Rails.configuration.bigbluebutton_endpoint
   end
 
+  # Returns language selection options
+  def language_options
+    language_opts = [['<<<< ' + t("language_options.default") + ' >>>>', "default"]]
+    Rails.configuration.languages.each do |loc|
+      language_opts.push([t("language_options." + loc), loc])
+    end
+    language_opts.sort
+  end
+
   # Parses markdown for rendering.
   def markdown(text)
     markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML,

app/views/shared/settings/_account.html.erb

@@ -34,6 +34,9 @@
     <br>
     <%= f.label t("settings.account.provider"), class: "form-label" %>
     <%= f.text_field :provider, class: "form-control", readonly: "" %>
+    <br>
+    <%= f.label t("settings.account.language"), class: "form-label" %>
+    <%= f.select :language, language_options, {}, { class: "form-control custom-select" } %>
 
     <%= f.label t("settings.account.image"), class: "form-label mt-5" %>
     <div class="row">

app/views/users/edit.html.erb

@@ -19,7 +19,7 @@
   <div class="row">
     <div class="col-lg-3 mb-4">
       <div class="list-group list-group-transparent mb-0">
-        
+
         <button id="account" class="list-group-item list-group-item-action setting-btn <%= "active" if !params[:setting] || params[:setting] == "account"%>">
           <span class="icon mr-3"><i class="fas fa-user"></i></span><%= t("settings.account.title") %>
         </button>