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Author
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Topic: Mapping response to a value
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Thomas McCarthy
Junior Member
Member # 3580
Rate Member
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posted May 30, 2006 01:44 PM
Is there a way to map a response to a certain value? For instance, if the user says yes sure or yeah I'd like to put 1 in the database. If the user says no, nope, nah I'd put 0.
I'm unsure of how to map yes or no to a 0 or 1 value though. What would be the easiest way to do this? I typically work in jsps, so I had considered matching strings, but had thought there might be an easier solution you can point me to.
As it is I use an if/then statement in the vxml page to pass each response to a yes or no jsp in which the proper response in logged, but that gets overly complicated quickly.
Posts: 1 | Registered: May 2006
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mheadd
Member
Member # 3181
Member Rated:
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posted May 31, 2006 02:49 PM
There are a couple of option open to you if all you are using is a simple yes/no grammar.
Option 1 = use the builtin "boolean" grammar type. By specifying a field type of "boolean", an implicit grammar is created that should cover affirmative or negative responses for whataver language is being used. A boolean field returns a JavaScript string based on what the user says (e.g., yes='true' or no='false'). You can convert this to a 1 or 0 using a simple if/else construct and a predefnied variable.
code:
<var name="convert" expr="0"/>
...
<field name="F_1" type="boolean">
<prompt>Do you think VoiceXML rocks?</prompt>
<filled>
<!-- If the user says yes, then the expression in the "cond" attribute will evaluate to true -->
<if cond="F_1">
<assign name="convert" expr="1"/>
</if>
<!-- If the preceding if statement did not execute, then expression in the cond attribute evaluated to false. User said no, so we keep our original value of 0 -->
<submit next="mypage.jsp" namelist="convert"/>
</filled>
</field>
Option 2 = you can use the <tag> element with a custom yes/no grammar to return a 1 or a 0. (Check your platform vendor's documentation on this element, as there is some variation.)
code:
<!-- In your VoiceXML document, reference the yes/no grammar -->
<field name="F_1">
<grammar src="yesno.grxml"/>
...
<!-- Contents of yesno.grxml file -->
<?xml version = "1.0"?>
<grammar xml:lang="en-US" version="1.0" root="R_1" type="application/srgs+xml" xmlns="http://www.w3.org/2001/06/grammar">
<rule id="R_1">
<one-of>
<item>yes <tag>F_1=1;</tag> </item>
<item>yeah <tag>F_1=1;</tag> </item>
<item>hells yeah <tag>F_1=1;</tag> </item>
<item>yur damn skippy <tag>F_1=1;</tag> </item>
<item>no <tag>F_1=0;</tag> </item>
<item>nope <tag>F_1=0;</tag> </item>
<item>no way <tag>F_1=0';</tag> </item>
<item>hells no <tag>F_1=0;</tag> </item>
</one-of>
</rule>
</grammar>
This has the effect of filling the field named "F_1" with the value specified in the <tag> when one of the grammar items is recognized. A few good links to get you started follow:
BeVocal Cafe
Voxeo Community
Hope this helps.
[ May 31, 2006, 02:50 PM: Message edited by: mheadd ]
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Mark
VoiceinGov.org
http://www.voiceingov.org
Posts: 55 | Registered: Jun 2005
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