Call a method on a file.
Name of the method to execute, for example Inline or custom.
Additional options to the call.
{
context: File,
request: File,
}
Optional. Context file to use within the child transaction. Defaults to the current transaction’s context.
Optional. Request file to use within the child transaction. Defaults to an empty file.
Call a method on a file as defined on the filesystem.
For example, calling f.call('Inline') will locate the
closest .Inline file on the file’s type chain and execute
it in a new transaction, in an isolated VM.
The file on which .call() is executed will be available as
file f within the child execution context.
For apps defined in user space, calling f.call(method) is
identical to finding the source file first by
source = f.chainSelect("." + method) and then executing it
via source.exec(f).
Note that no post-processing is performed, thus the result of
calling f.call("Inline", ...) will be slightly different
from calling f.inline() which does apply some post-processing,
for example it extracts the body of the generated result file,
passes on Content-Security-Policy rules, head entries and
updates the statusCode of the current transaction’s response file.
Execute the .Inline method of an app, returning
hello world.
Execute a custom .hello method.
Method names starting with a lower-case letter are
considered user-space methods.
(You can define any user-space method yourself.)
Increment a counter.
Request file defaults to a new, empty file.
Pass in custom request file.
Context file defaults to that of the current transaction.
Custom context file.
When the result contains an unhandled error, it will be thrown.
Here we catch it in a try-catch block.
Throws an error for unexpected options keys.
An error is thrown in a child execution context. Due to the unhandled error, the child transaction is rolled back.
The transaction is not rolled back merely by returning a non-success response, only if an unhandled error occurred.
Legacy: it is allowed to ommit the dot from method names. Do not use this format in new code.