-
-
Notifications
You must be signed in to change notification settings - Fork 5.2k
Added documentation about the DebugFormatter helper #4485
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Changes from 1 commit
File filter
Filter by extension
Conversations
Jump to
Diff view
Diff view
- Loading branch information
There are no files selected for viewing
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,32 +1,32 @@ | ||
.. index:: | ||
single: Console Helpers; DebugFormatter Helper | ||
|
||
DebugFormatter Helper | ||
===================== | ||
Debug Formatter Helper | ||
====================== | ||
|
||
.. versionadded:: 2.6 | ||
The DebugFormatter helper was introduced in Symfony 2.6. | ||
The Debug Formatter helper was introduced in Symfony 2.6. | ||
|
||
The :class:`Symfony\\Component\\Console\\Helper\\DebugFormatterHelper` provides | ||
functions to output debug information when running an external program, for | ||
instance a process or HTTP request. It is included in the default helper set, | ||
which you can get by calling | ||
:method:`Symfony\\Component\\Console\\Command\\Command::getHelperSet`:: | ||
instance a process or HTTP request. It is included in the default helper set | ||
and you can get it by calling | ||
:method:`Symfony\\Component\\Console\\Command\\Command::getHelper`:: | ||
|
||
$debugFormatter = $this->getHelper('debug_formatter'); | ||
|
||
The formatter only formats strings, which you can use to output to the console, | ||
but also to log the information or anything else. | ||
but also to log the information or do anything else. | ||
|
||
All methods of this helper have an identifier as the first argument. This is an | ||
All methods of this helper have an identifier as the first argument. This is a | ||
unique value for each program. This way, the helper can debug information for | ||
multiple programs at the same time. When using the | ||
:doc:`Process component </components/process>`, you probably want to use | ||
:phpfunction:`spl_object_hash`. | ||
|
||
.. tip:: | ||
|
||
This information is often too verbose to show by default. You can use | ||
This information is often too verbose to be shown by default. You can use | ||
:ref:`verbosity levels <verbosity-levels>` to only show it when in | ||
debugging mode (``-vvv``). | ||
|
||
|
@@ -62,8 +62,17 @@ Some programs give output while they are running. This information can be shown | |
using | ||
:method:`Symfony\\Component\\Console\\Helper\\DebugFormatterHelper::progress`:: | ||
|
||
use Symfony\Component\Process\Process; | ||
|
||
// ... | ||
$process = new Process(...); | ||
|
||
$process->run(function ($type, $buffer) use ($output, $debugFormatter, $process) { | ||
$output->writeln( | ||
$debugFormatter->progress(spl_object_hash($process), $buffer, Process::ERR === $type) | ||
); | ||
}); | ||
// ... | ||
$output->writeln($debugFormatter->progress(spl_object_hash($process), $buffer, Process::ERR === $type)); | ||
|
||
In case of success, this will output: | ||
|
||
|
@@ -80,18 +89,24 @@ And this in case of failure: | |
The third argument is a boolean which tells the function if the output is error | ||
output or not. When ``true``, the output is considered error output. | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. The last sentence isn't necessary, is it? If you really want to make it more clear, you could write something like:
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Well, I personally feel like |
||
|
||
The fourth and fifth argument allow you to override the prefix for respectively | ||
the normal output and error output. | ||
The fourth and fifth argument allow you to override the prefix for the normal | ||
output and error output respectively. | ||
|
||
Stopping a Program | ||
------------------ | ||
|
||
When a program is stopped, you can use | ||
:method:`Symfony\\Component\\Console\\Helper\\DebugFormatterHelper::progress` | ||
to notify this to the users:: | ||
:method:`Symfony\\Component\\Console\\Helper\\DebugFormatterHelper::run` to | ||
notify this to the users:: | ||
|
||
// ... | ||
$output->writeln($debugFormatter->progress(spl_object_hash($process), 'Some command description', $process->isSuccesfull())); | ||
$output->writeln( | ||
$debugFormatter->stop( | ||
spl_object_hash($process), | ||
'Some command description', | ||
$process->isSuccessfull() | ||
) | ||
); | ||
|
||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Should this be There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. yeah, my bad :) Fixed it now |
||
This will output: | ||
|
||
|
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
The example is a bit confusing since you talk about
getHelperSet()
, but actually usegetHelper()
.