Snap.Snaplet.MongoDB.Functions.M

In this module you can find variations of withDB functions.

Functions from this module are to be used when you have multiple MongoDB snaplets (databases) in your application.

Documentation

eitherWithDB

Arguments

:: (MonadIO m, MonadState app m)

=> Lens app (Snaplet MongoDB)

The snaplet (database) on which you want the action to be run.

-> Action IO a

Action you want to perform.

-> m (Either Failure a)

Either Failure or the action's result.

Database access function.

Example:

 eitherWithDB accountDB $ insert "test-collection" ["some_field" = "something" ]

eitherWithDB'

Arguments

:: (MonadIO m, MonadState app m)

=> Lens app (Snaplet MongoDB)

The snaplet (database) on which you want the action to be run.

-> AccessMode

Access mode you want to use when performing the action.

-> Action IO a

Action you want to perform.

-> m (Either Failure a)

Either Failure or the action's result.

Database access function.

Example:

 eitherWithDB' accountDB UnconfirmedWrites $ insert "test-collection" ["some_field" = "something" ]

maybeWithDB

Arguments

:: (MonadIO m, MonadState app m)

=> Lens app (Snaplet MongoDB)

The snaplet (database) on which you want the action to be run.

-> Action IO a

Action you want to perform.

-> m (Maybe a)

Nothing in case of failure or Just the result of the action.

Database access function.

Example:

 maybeWithDB accountDB $ insert "test-collection" ["some_field" = "something" ]

maybeWithDB'

Arguments

:: (MonadIO m, MonadState app m)

=> Lens app (Snaplet MongoDB)

The snaplet (database) on which you want the action to be run.

-> AccessMode

Access mode you want to use when performing the action.

-> Action IO a

Action you want to perform.

-> m (Maybe a)

Nothing in case of failure or Just the result of the action.

Database access function.

Example:

 maybeWithDB' accountDB UnconfirmedWrites $ insert "test-collection" ["some_field" = "something" ]

unsafeWithDB

Arguments

:: (MonadIO m, MonadState app m)

=> Lens app (Snaplet MongoDB)

The snaplet (database) on which you want the action to be run.

-> Action IO a

Action you want to perform.

-> m a

The action's result; in case of failure error is called.

Database access function.

Example:

 unsafeWithDB accountDB $ insert "test-collection" ["some_field" = "something" ]

unsafeWithDB'

Arguments

:: (MonadIO m, MonadState app m)

=> Lens app (Snaplet MongoDB)

The snaplet (database) on which you want the action to be run.

-> AccessMode

Access mode you want to use when performing the action.

-> Action IO a

Action you want to perform.

-> m a

The action's result; in case of failure error is called.

Database access function.

Example:

 unsafeWithDB' accountDB UnconfirmedWrites $ insert "test-collection" ["some_field" = "something" ]