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Check for a key in the query data that was part of the HTTP request
ns_queryexists looks in the query data for the specified key. If the key exists, 1 is returned; otherwise 0 is returned. The key is interpreted in a case insensitive manner.
ns_register_proc POST /queryexiststest queryexiststest
proc queryexiststest { } {
if [ns_queryexists name] {
# process the form
} else {
ns_returnerror 400 "need to supply your name in the form"
}
} ;# queryexiststest