CFLOG |
Description Writes a message to a log file.
Category Data output tags
Syntax
    <cflog
       text = "text"
       log = "log type"
       file = "filename"
       type = "message type"
       application = "yes" or "no">
See also cfcol, cfcontent, cfoutput, cftable
History ColdFusion MX: Deprecated the thread, date, and time attributes. They might not work, and might cause an error, in later releases. (In earlier releases, these attributes determined whether the respective data items were output to the log. In ColdFusion MX, this data is always output.)

Usage This tag logs custom messages to standard or custom log files. You can specify a file for the log message or send messages to the default application or scheduler log. The log message can include ColdFusion expressions. Log files must have the suffix .log and must be located in the ColdFusion log directory.

Log entries are written as comma-delimited lists with these fields:

- type
- coio
- date
- time
- application
- text

Values are enclosed in double-quotation marks. If you specify no for the application attribute, the corresponding entry in the list is empty.

You can disable cflog tag execution. For more information, see the ColdFusion Administrator Basic Security page.

The following example logs the name of a user that logs on an application. The message is logged to the file myAppLog.log in the ColdFusion log directory. It includes the date, time, and thread ID, but not the application name.

    <cflog file="myAppLog" application="no"
       text="User #Form.username# logged on.">

For example, if a user enters "Sang Thornfield" in a form's username field, this entry is added to the myApplog.log file entry:

"Information","153","02/28/01","14:53:40",,"User Sang Thornfield logged on."

TEXT |
| Required
Message text to log.

LOG |
| Optional
If you omit the file attribute, writes messages to standard log file. Ignored, if you specify file attribute.

- Application: writes to Application.log, normally used for application-specific messages.
- Scheduler: writes to Scheduler.log, normally used to log the execution of scheduled tasks.

FILE |
| Optional
Message file. Specify only the main part of the filename. For example, to log to the Testing.log file, specify "Testing". The file must be located in the default log directory. You cannot specify a directory path. If the file does not exist, it is created automatically, with the suffix .log.

TYPE |
| Optional
Default value: "Information" Type (severity) of the message:

- Information
- Warning
- Error
- Fatal

APPLICATION |
| Optional
Default value: "yes"

- yes: logs the application name, if it is specified in a cfapplication tag or Application.cfc file.
- no