ruby on rails - How to query to get all users based on a nested resource? -

-

given: 

  room (id, update_at) roommember (room_id, user_id) user (Id)   
 How can I get all the users of the last updated  all rooms  in the last 24 hours in the train?  
 Thanks   
 
 
  Selection ('Specific User. *') Joins (: rooms) .where ('rooms.updated_at & gt ;?', 1.day.ago)

Comments

Post a Comment

Popular posts from this blog

mysql - BLOB/TEXT column 'value' used in key specification without a key length -

-
I have developed an extension which works up to 1.6 on Magren (I'm trying Enterprise Edition, And I think the community is the same problem, because it is the same code). In my install script, I see the $ installer-> gt; CreateEntityTables ($ this- & gt; getTable ('alphanum / info')); The installation is done until it is not in the _text unit table. It crashed there! It turns out that when I log in to SQL and run it via PHPmyadmin, then this error is: Blob / Text column 'value' is used without the key 'key' . I saw the code there, and this is what is trying to create an index on the value column: -> addIndex ($ this- & gt; getIdxName ($ eavTableName, array ( 'attribute_id array (' attribute_id ',' value ')) - & gt; addIndex ($ this- & gt; getIdxName ($ eavTableName, array (' entity_type_id ' , 'Value')), array ('entity_type_id', 'value')) If there is no if statement is n...
Read more

c# - Using Vici cool Storage with monodroid -

-
Oh, for the moment I am not sure how it is officially supported, but for the success of the people Using Monodroid Vic Cool Storage I am able to leave and compile assemblies in my project, but while trying to use some classes, the errors of time have to be gathered. Especially when trying to connect like the example for Mono Touch string dbName = path. Cobain (environment. Gatefolder path (environment specialfolder personal), "mydb.db3"); // The following line will be called coolestation, where is the database, // to make it if it does not exist, and call a delegate that creates the necessary tables (only when the database file was newly created //) CSConfig.SetDB (DbName, true, () => {CSDatabase.ExecuteNonQuery ("Subscriber Integer Primary Key Attribute, Name Text (50) No, Number, Date First Text (30)");); There is no difference when I try to use the methods of CSConfig and when I cscfif If I try to pass 3 aggregates to STDB (3) then I get the invalid ...
Read more

c# - Confused over DLL entry points (entry point not found exception) -

-
I'm learning how to use DLL in C #. I have a very simple DLL to do my basic test. // using the MainForm.cs system; Using System.Collections.Generic; Using System.ComponentModel; Using System.Data; Using System.Drawing; Using System.Linq; Using System.Text; Using System.Windows.Forms; Using System.Runtime.InteropServices; Namespace DLL_Test {public partial class} Form 1: Form {{DllImport ("TestDLL.dll", EntryPoint = "? @ @ YGHHH Add @, Accurate Spelling = True, Calling Communication = Calling Conference. STCL}] Add public static extern int ( Int a, int b); public form 1 () {initialization ();} private zeros button 1_Click (object sender, eventArgs e) {int num; try {num = add (2, 3); RichTextBox1.AppendText (num. ToString () + "\ n");} Hold (DllNotFoundException Pre) {Message Box.Show (ex.ToString ());} Hold (EntryPointNotFoundException Pre) {Message Box.Show (ex.ToString ())}} }} more DLL code: // TestDLL.cpp __declspec (dllexport) Add int __std...
Read more