Rails i18n: How to know what is the current language?
I am aware of how i18n/l10n is usually done in Rails3, and I chose to have a single ERB file that calls t(...) for localization. But for a particular part I need something special: I need to display a string whose localization is coming from an external database. So how can I know the current language, to call the external database with an en or ja parameter? Something like $LANG in UNIX. Preferab
How to implement min/max validator in Rails 3?
What is the rails way of implementing a min max validator in Rails 3 ? I have a model, with min_age and max_age attributes. Age can be in the range of 0..100, but I want also to validate crossing values, I mean that max is greather than or equal to min {:min_age => 0, :max_age => 0} => true {:min_age => 0, :max_age => 1} => true {:min_age => 1, :max_age => 0} => false # max < min {:min_age => 1, :
How to query an ActiveRecord table using conditions based on another table?
I have two models - Blog and BlogTag. Blog has_many :blog_tags and BlogTag belongs_to :blog: blog.rb has_many :blog_tags blog_Tag.rb belongs_to :blog I want to query the database to select all blogs that have tags matching in the blog_tags table based on what a user enters in a form field. Something like this: Blog.where(blog_tags contain [array of tags]) Is there a way to do this with ActiveRecor
In SQL how do I get the maximum value for an integer?
I am trying to find out the maximum value for an integer (signed or unsigned) from a MySQL database. Is there a way to pull back this information from the database itself? Are there any built-in constants or functions I can use (either standard SQL or MySQL specific). At http://dev.mysql.com/doc/refman/5.0/en/numeric-types.html it lists the values - but is there a way for the database to tell me.
Combine two ActiveRecord::Relation objects
Suppose I have the following two objects: first_name_relation = User.where(:first_name => 'Tobias') # ActiveRecord::Relation last_name_relation = User.where(:last_name => 'Fünke') # ActiveRecord::Relation is it possible to combine the two relations to produce one ActiveRecord::Relation object containing both conditions? Note: I'm aware that I can chain the wheres to get this behavior, what I'm rea
ToC or Sidebar in GitHub Wiki
How do I create a ToC or a sidebar menu in a GitHub Wiki? I saw some mentions of it and gollum the backend seems to support it, but how do I do it in a current GitHub project? It should best be based on the headers I have in the page automatically. These links all mention it, but do not show how to do it: https://gist.github.com/379469 - some JavaScript hack https://github.com/blog/774-git-powered
How to change filename prompt text browser Save As dialog?
I think I understand the problem here because I encountered (and resolved) at least part of it myself not too long ago. I have some large mp3's and I link to them on my website A few problems I needed to set my content-disposition header to attachment in order to prevent files from automatically streaming whenever a user clicked the download button my files are on a remote server my files are larg
Rails I18n, check if translation exists?
Working on a rails 3 app where I want to check if a translation exists before outputting it, and if it doesn't exist fall back to some static text. I could do something like: if I18n.t("some_translation.key").to_s.index("translation missing") But I feel like there should be a better way than that. What if rails in the future changes the "translation missing" to "translation not found". Or what if
Correctly doing redirect_to :back in Ruby on Rails when referrer is not available
I'm having a problem with redirect_to :back. Yes, it's referrers. I often get the exception (ActionController::RedirectBackError) "No HTTP_REFERER was set in the request to this action, so redirect_to :back could not be called successfully. If this is a test, make sure to specify request.env[\"HTTP_REFERER\"]." I realize that this is a result of a referrer not being available. Is there a way that,
Change colour of table row onclick
I have created a table having rows with alternating colours(say yellow and red). Now, I want to change the colour of the clicked row to one common colour(say blue).And revert back to its original colour when clicked again. I'm able to change the colour using this code $("#mainTable").find('#'+IDClicked).css("background-color", "#bbbbff"); I'm not able to figure out how to revert back.
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