ruby on rails - Select attribute which is not current_user.id -


I am creating a messaging system in the railroad, and to display the conversation partners, Current_user is included in: 

  Message.where ("to_id =? Or user_id =?", Current_user.id, current_user.id)

However, since I want the other user's ID only from that query, I have to select it, and I can either select : to_id or : user_id Is not current_user.id

something like this: 

  Message.where ("to_id =? Or user_id =? ", Current_user.id, current_user.id) .select (: to_id ,: user_id unless current_user.id is not)

Thanks in advance!

Edit: The message table is simplified here: 

  create_table "messages", force: true do | T | T.integer "to_id" - & gt; The user who has the message t.integer "user_id" - & gt; If you are trying to get a user ID  

  Message.where ("to_id =? Or user_id =?", Current_user.id, current_user.id). Map {| M M.user_id == current_user.id? M.to_id: m.user_id}

This gives you more sense like 

  # = & gt; [3771, 3611, 37 9 4, 3638, 36 9 7, 3786]

Comments

Post a Comment

Popular posts from this blog

ios - How do I use CFArrayRef in Swift? -

I am using Objective-class in my Swift Project through a bridging header. The method signature looks like this: - Some cement (some type) some parameters; I started by getting an example of class, calling method, and storing the value: var myInstance = MyClassWithThatMethod (); Var cfArr = myInstance.someMethod (some value); Then try to get the value in the array: var valueInArrayThatIWant = CFArrayGetValueAtIndex (cfArr, 0); However, I get the error unmanaged & lt; Cfarray & gt; Not like 'CFArray' . Unmanaged & lt; Cfarray & gt; also means? I looked, but I do not need to change the array in a fast array (though it would be good). I need to be able to get value from the array. I also tried CFArray method to pass in a function: func doSomeStuffOnArray (myArray: NSArray) {} Although I get the same error when using: doSomeStuffOnArray (cfArr); // unmanaged & lt; CFArray & gt; I am using CFArray because I want to sto...
Read more

eclipse plugin - Run java code error: Workspace is closed -

To create an automated project, I created a plug-in project with the following dependencies: Org.eclipse.core.resources org.eclipse.equinox.registry org.eclipse.core.runtime and the following The Java class is located in the src folder: Package Examiner; Import org.eclipse.core.resources.IProject; Import org.eclipse.core.resources.IWorkspaceRoot; Import org.eclipse.core.resources.ResourcesPlugin; Import org.eclipse.core.runtime.CoreException; Import org.eclipse.core.runtime.IProgressMonitor; Import org.eclipse.core.runtime.NullProgressMonitor; Public class tes {public static zero main (string [] args) {// TODO auto generated method stub IProgressMonitor progress monitor = new NullProgressMonitor (); IWorkspaceRoot root = ResourcesPlugin.getWorkspace (). GetRoot (); Ipoject project = root.jetproject ("desired projectname"); Try {Project.create (progress monitor); Project.open (progressMonitor); } Grip (CoreException E) {// TODO Auto generated blocking block e....
Read more

c - Error on building source code in VC 6 -

When I create my project in VC6, the BScMKE reports the following error Linking .. Creating Library ... .. / ... / PB / Bean / Debub / ICEERP.Lib and Object ........ P.B. / Bean / DBube / ICREPlay.APP Browse information file ... BSMMK: ​​error can not be read from BK 1505: file '../../PB/bin/TmpOut/ICReplay/Debug/ICReplay_PB.bsc' Error executing bscmake.exe Can someone help me? 2 Reason for reference from: "ICReplay_PB .bsc "file will be corrupted The trunk of the file will be happening with the compiler running out of disk space or is being interrupted when creating .sbr file I think this answer will help you!
Read more