Apparently that is possible as well and I will show you how. The value of that parameter will become string value in Azure Automation variable. The end result is this:. As you can see string value containing the json as text. Below you can see the example of how to achieve that:. Stanislav Zhelyazkov has been working in IT since His blogposts can be found at www. View all posts by Stanislav Zhelyazkov. You are commenting using your WordPress.
You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. The repeat filter is such an example, accepting a numerical argument which specifies the number of times that the input text should be repeated.
These are implemented as filter 'factories'. The factory subroutine is passed a reference to the current Template::Context object along with any additional arguments specified. It should then return a subroutine reference e. The repeat filter factory is implemented like this:. When using a filter, it is possible to assign an alias to it for further use. This is most useful for dynamic filters that you want to re-use with the same configuration.
A template variable can also be used to define a static filter subroutine. However, the Template Toolkit will automatically call any subroutine bound to a variable and use the value returned. Thus, the above example could be implemented as:.
To define a template variable that evaluates to a subroutine reference that can be used by the FILTER directive, you should create a subroutine that, when called automatically by the Template Toolkit, returns another subroutine reference which can then be used to perform the filter operation. Note that only static filters can be implemented in this way. Alternately, you can bless a subroutine reference into a class any class will do to fool the Template Toolkit into thinking it's an object rather than a subroutine.
This will then bypass the automatic "call-a-subroutine-to-return-a-value" magic. Filters bound to template variables remain local to the variable context in which they are defined. That is, if you define a filter in a PERL block within a template that is loaded via INCLUDE , then the filter definition will only exist until the end of that template when the stash is delocalised, restoring the previous variable state.
See Template::Manual::Filters for a complete list of available filters, their descriptions and examples of use. The USE directive can be used to load and initialise "plugin" extension modules. A plugin is a regular Perl module that conforms to a particular object-oriented interface, allowing it to be loaded into and used automatically by the Template Toolkit.
For details of this interface and information on writing plugins, consult Template::Plugin. A number of standard plugins are included with the Template Toolkit see below and Template::Manual::Plugins.
The names of these standard plugins are case insensitive. The recommended convention is to specify these plugin names in lower case.
The Template Toolkit first looks for an exact case-sensitive match and then tries the lower case conversion of the name specified. In this case the plugin name is case-sensitive. Any periods, '. If a regular Perl module i. The following trivial example shows how the IO::File module might be used. Any additional parameters supplied in parenthesis after the plugin name will be also be passed to the new constructor.
A reference to the current Template::Context object is passed as the first parameter. This is based on the assumption that the module is a regular Perl module rather than a Template Toolkit plugin so isn't expecting a context reference and wouldn't know what to do with it anyway.
Named parameters may also be specified. These are collated into a hash which is passed by reference as the last parameter to the constructor, as per the general code calling interface. The plugin may represent any data type; a simple variable, hash, list or code reference, but in the general case it will be an object reference.
Methods can be called on the object or the relevant members of the specific data type in the usual way:. An alternative name may be provided for the plugin by which it can be referenced:.
You can use this approach to create multiple plugin objects with different configurations. This example shows how the format plugin is used to create sub-routines bound to variables for formatting text as per printf. This next example shows how the URL plugin can be used to build dynamic URLs from a base part and optional query parameters.
The CGI plugin is an example of one which delegates to another Perl module. All of the methods provided by the CGI module are available via the plugin. The MACRO directive allows you to define a directive or directive block which is then evaluated each time the macro is called. Macros can be passed named parameters when called. These values remain local to the macro. Values passed to the macros are then mapped to these local variables. Other named parameters may follow these. Here's another example, defining a macro for display numbers in comma-delimited groups of 3, using the chunk and join virtual method.
The block will be evaluated each time the macro is called. Perl code is evaluated in the Template::Perl package. This can be used to access the functionality of the Template Toolkit to process other templates, load plugins, filters, etc. See Template::Context for further details. Through this, variable values can be retrieved and updated. See Template::Stash for further details.
Output is generated from the PERL block by calling print. The PERL block may contain other template directives. These are processed before the Perl code is evaluated. Exceptions may be thrown from within PERL blocks using die. They will be correctly caught by enclosing TRY blocks. The Template Toolkit parser reads a source template and generates the text of a Perl subroutine as output.
It then uses eval to evaluate it into a subroutine reference. This subroutine is then called to process the template, passing a reference to the current Template::Context object through which the functionality of the Template Toolkit can be accessed.
The subroutine reference can be cached, allowing the template to be processed repeatedly without requiring any further parsing. The PERL It is evaluated at "runtime" using eval each time the template subroutine is called. This is inherently flexible, but not as efficient as it could be, especially in a persistent server environment where a template may be processed many times. It is evaluated once at compile time and is stored in cached form as part of the compiled template subroutine.
The downside is that you must code much closer to the metal. For example, in a PERL block you can call print to generate some output. The critical section of the generated subroutine for this example would then look something like:. The Template Toolkit supports fully functional, nested exception handling. Any errors that occur within that block will be caught and can be handled by one of the CATCH blocks defined.
Errors are raised as exceptions objects of the Template::Exception class which contain two fields: type and info. When used with the preceding template, the following parameter file returns [test value] :. To set a property to null, you can use null or [json 'null' ]. The json function returns an empty object when you provide null as the parameter.
In both cases, Resource Manager templates treat it as if the property isn't present. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Submit and view feedback for This product This page. View all page feedback.
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