Dynamic Connection String #335

4 Answer(s)

• 

  0

  hikalkan created 8 years ago

  Support Team

  Hi,

  Want to use different connection based on current user or some other dynamic conditions? Have you more than one db? If so, actually all the thing is done in your DbContext's constructor. You can write such a constructor

  public class MyDbContext : AbpDbContext
          {
              public MyDbContext(string nameOrConnectionString)
                  : base(CreateDynamicConnectionString())
              {
              }
  
              private static string CreateDynamicConnectionString()
              {
                  //TODO: create and return some dynamic conn string.
              }
          }
  

  string nameOrConnectionString argument should be remain, because ABP uses it.

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• 

  0

  stevenmunoz created 8 years ago

  This is how we did it with no success :( ...

  public Backend_MintDbContext(string nameOrConnectionString) : base(CreateDynamicConnectionString()) {

      }
  

  private static string CreateDynamicConnectionString() { return "DATA SOURCE=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx.xx.xxx.xxx)(PORT=xxxx)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=xxxx)));PASSWORD=xxxx;PERSIST SECURITY INFO=True;USER ID=xxxx; enlist=dynamic;"; }

  This is our currently working default connection string, we are using the same connection string on above method

  <connectionStrings> <add name="Default" connectionString="DATA SOURCE=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx.xx.xxx.xxx)(PORT=xxxx)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=xxxx)));PASSWORD=xxxx;PERSIST SECURITY INFO=True;USER ID=xxxx; enlist=dynamic;" providerName="Oracle.ManagedDataAccess.Client" /> </connectionStrings>

  And we remove this constructor

  public Backend_MintDbContext() : base("Default") {

      }
  

  So it's not working in that way ... what can be wrong ? thanks for your help

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• 

  0

  hikalkan created 8 years ago

  Support Team

  Hi,

  I did not understand well what you exactly want :) Should you replace user name and pass in CreateDynamicConnectionString method? You are returning a constant string, not dynamically created?

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• 

  0

  stevenmunoz created 8 years ago

  Yes you're right

  The first thing i was trying to test, is get connection with database just with the same connection string using the method constructor with nameOrConnectionString param, but i can't connect, as i described in above post, so the next step is pass user and password as parameters, in fact i don't know how neither.

  Thanks a lot for your help

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