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annotate framework/env/param/iterate.lua @ 3:795b764629ca
Version 1.0.3
Important bugfix related to internal forwards (Bug was introduced by the restriction of views with underscore prefix in Version 1.0.2)
Important bugfix related to internal forwards (Bug was introduced by the restriction of views with underscore prefix in Version 1.0.2)
| author | jbe |
|---|---|
| date | Thu Dec 10 12:00:00 2009 +0100 (2009-12-10) |
| parents | 9fdfb27f8e67 |
| children |
| rev | line source |
|---|---|
| jbe/bsw@0 | 1 --[[-- |
| jbe/bsw@0 | 2 for |
| jbe/bsw@0 | 3 index, -- index variable counting up from 1 |
| jbe/bsw@0 | 4 prefix -- prefix string with index in square brackets to be used as a prefix for a key passed to param.get or param.get_list |
| jbe/bsw@0 | 5 in |
| jbe/bsw@0 | 6 param.iterate( |
| jbe/bsw@0 | 7 prefix -- prefix to be followed by an index in square brackets and another key |
| jbe/bsw@0 | 8 ) |
| jbe/bsw@0 | 9 do |
| jbe/bsw@0 | 10 ... |
| jbe/bsw@0 | 11 end |
| jbe/bsw@0 | 12 |
| jbe/bsw@0 | 13 This function returns an interator function to be used in a for loop. The CGI GET/POST parameter (or internal parameter) with the name "prefix[len]" is read, where 'prefix' is the prefix passed as the argument and 'len' ist just the literal string "len". For each index from 1 to the read length the returned iterator function returns the index and a string consisting of the given prefix followed by the index in square brackets to be used as a prefix for keys passed to param.get(...) or param.get_list(...). |
| jbe/bsw@0 | 14 |
| jbe/bsw@0 | 15 --]]-- |
| jbe/bsw@0 | 16 |
| jbe/bsw@0 | 17 function param.iterate(prefix) |
| jbe/bsw@0 | 18 local length = param.get(prefix .. "[len]", atom.integer) or 0 |
| jbe/bsw@0 | 19 if not atom.is_integer(length) then |
| jbe/bsw@0 | 20 error("List length is not a valid integer or nil.") |
| jbe/bsw@0 | 21 end |
| jbe/bsw@0 | 22 local index = 0 |
| jbe/bsw@0 | 23 return function() |
| jbe/bsw@0 | 24 index = index + 1 |
| jbe/bsw@0 | 25 if index <= length then |
| jbe/bsw@0 | 26 return index, prefix .. "[" .. index .. "]" |
| jbe/bsw@0 | 27 end |
| jbe/bsw@0 | 28 end |
| jbe/bsw@0 | 29 end |