Difference between revisions of "VbzCart/pieces/catalog/building"

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==Version==
 
==Version==
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This is being revised yet again for the 2007 VbzCart-MySQL migration project; the previous version is here: [[VbzCart catalog building 2006]].
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This is a tricky process which has been revised multiple times.
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==Process==
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This is only a draft, as the process is still being worked out.
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* {{l/sub|2017}} version - 2016 code apparently never really got finished, and the Items table needs some flag changes
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# Update the list of all catalog-based items ([calc Items Updates saved])
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* {{l/sub|2016}} version - webified version of 2010, with rules finally documented
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#* Generate a list of all the items currently available from suppliers (query)
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* '''2010''' version: see {{l/vbzcart/code|maint/build-cat.php}}
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#* Add any new items to [calc Items Updates saved]
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* {{l/sub|2009}} version - SQL statements executed directly from PHP code
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# For all items in [calc Items Updates saved] where ID_Item IS NULL, create new records in cat_items and update the corresponding records in [calc Items Updates saved]
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* {{l/sub|2008}} version - started in 2007 - a set of stored queries called from a stored procedure
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# Update all data in cat_items from data stored in [calc Items Updates saved]
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* {{l/sub|2006}} version
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# In cat_items, clear all isForSale flags ''except'' for items either in stock or found in [calc Items Updates saved]
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It's interesting to note that I originally thought of SCM Groups as groups ''of Titles'' -- an explanation from the [[VbzCart/tables]] page on 2008-02-17 (and only removed on 2016-02-01) says:
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<blockquote>The key concept here is "catalog title groups" (CTGs). A CTG is a set of titles which are all available with the same set of options (e.g. sizes) at the same prices (e.g. $10 S, $11 M-XL, $12 2XL). The final vbz catalog (cat_items) is the result of a sort of vector multiplication of Titles (cat_titles) and CTGs plus any items in stock.
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</blockquote>
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This conceptualization no longer works, as a SCM Title may have one or more SCM Groups -- e.g. if it has a set of standard sizes (like S-3X) but is also available in super-large sizes (4X+).

Latest revision as of 11:07, 12 June 2017

Version

This is a tricky process which has been revised multiple times.

  • 2017 version - 2016 code apparently never really got finished, and the Items table needs some flag changes
  • 2016 version - webified version of 2010, with rules finally documented
  • 2010 version: see maint/build-cat.php
  • 2009 version - SQL statements executed directly from PHP code
  • 2008 version - started in 2007 - a set of stored queries called from a stored procedure
  • 2006 version

It's interesting to note that I originally thought of SCM Groups as groups of Titles -- an explanation from the VbzCart/tables page on 2008-02-17 (and only removed on 2016-02-01) says:

The key concept here is "catalog title groups" (CTGs). A CTG is a set of titles which are all available with the same set of options (e.g. sizes) at the same prices (e.g. $10 S, $11 M-XL, $12 2XL). The final vbz catalog (cat_items) is the result of a sort of vector multiplication of Titles (cat_titles) and CTGs plus any items in stock.

This conceptualization no longer works, as a SCM Title may have one or more SCM Groups -- e.g. if it has a set of standard sizes (like S-3X) but is also available in super-large sizes (4X+).

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