MSPBlock
interpret the argument variables and replace in the body
if any of the variables do not have values, defvalue is returned
Details
- This is one of the key ways to work with variables from the HTTP request.
- MSPBlock takes each of the variables
, interprets them, and then replaces any occurrences in body with the interpreted value. - If any variables do not have values, an empty string is returned.
- The following exceptions can be thrown by MSPBlock.
-
MSPException["ParseError"] if the value cannot be interpreted by Mathematica MSPException["SecurityError"] if the value does not pass the security test MSPException["ValueError"] if the value is not a string, this indicates a programmatic error by the page author MSPException["VariableError"] if the variable is not a Mathematica symbol, this indicates a programmatic error by the page author
Examplesopen all
Basic Examples (1)
You can simulate how the function works by installing and loading the package and setting the security content.
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Here the variable $$var is assigned to the value "5+7"; note that the value is a string.
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When MSPBlock evaluates, all occurrences of $$var are replaced by its interpreted value.
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If the input value cannot be interpreted, an MSPException is thrown.
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If the input value does not pass the security test, an MSPException is thrown.
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Input can also be given in MathML.
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