search for: wamre

Displaying 4 results from an estimated 4 matches for "wamre".

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2013 Feb 25
3
ActiveRecord associations: design question
Hi guys, In my Rails app, I have three models: A, B and C, with the following relationships: - B hasMany C - C belongsTo B I would like A to "has_one" instance of B+C. By that I mean A needs to be linked to a specific instance of B AND a specific instance of C. My first guess would be to create a fourth object, say B_plus_C that would: - belongs to B - belongs to C - belongs to A Is
2009 Oct 04
3
Problem using ActiveRecord find with :joins and :select
Hi guys, When I do: temp = User.find(:all, :joins => "INNER JOIN contents ON users.agent_id = contents.id", :select => "contents.id, users.id, users.u_date") temp.first.inspect It seems to work fine, but it only returns: #<User id: 6, u_date: "2009-10-03 19:32:23"> but not the contents.id information. I
2012 Apr 02
10
Pessimistic locking locks the entire table?
Hi guys, I must be missing something obvious with pessimistic locking. Here is what I do (Rails 2.3, mySQL): In my Foo model: def test Foo.transaction do lock = UpdateLockForFoo.find_by_foo_id(self.id, :lock => true) sleep 30 end end For each Foo model, I have an UpdateLockForFoo. This "lock" needs to be acquired before doing any changes to Foo. I believe it works,
2013 Jan 03
6
How to avoid simple race conditions with Session?
Here is the situation: - the client makes a request - it is followed by AJAX polling The server needs to keep track of some stuff during this process. I have been using the Session and it "mostly" works… until the user decides to open another tab in her browser and she makes a new, parallel request. In this case, the data from the two requests is merged, which leads to bugs. This got