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  <object name=”mRegion”>
   <hasMany name=”sys_countries”>
    <link name=”mRegionCountry” />
   </hasMany>
  </object>
    
  <object name=”sys_countries”>
   <hasMany name=”mRegion”>
    <link name=”mRegionCountry” />
   </hasMany>
  </object>

  <object name=”mRegionCountry”>
  
   <hasOne name=”sys_countries”>
    <relate from=”country_id” to=”country_id” />
   </hasOne>
   
   <hasOne name=”mRegion”>
    <relate from=”regionID” to=”regionID” />
   </hasOne>
   
  </object>

This bit of code basically says a region has many countries and they link via a table called mRegionCountry.

It’s a lot more powerful than this but so far this as deep as i’ve gone. I’ve started using it in one of my applications and so far it’s saved me bags of time. I won’t go into details but after lots of googling i’ve found some very good documents the Introduction to Reactor for Coldfusion is great starter guide and is explained very simply with good examples. Also the .doc file that comes with the download is very good. Take a look at the examples too.

I’ll be posting more code in the future as I go along.

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Replace(myvar,”#chr(13)#”,”",”ALL”);

However I have found this doesn’t always remove the carriage returns.

How did I fix it? I used the following code:

REReplace(myvar,”#chr(13)#|#chr(9)#|\n|\r”,”",”ALL”);

This works everytime, its very handy for writing html with javascript

for example:

<cfsavecontent variable=”thecode”>
<cfinclude template=”#dynamicCFMfile#”>
</cfsavecontent>

<cfscript>
newDefaultCode = Replace(thecode ,”"”",”\”"”,”ALL”);
newDefaultCode = REReplace(newDefaultCode ,”#chr(13)#|#chr(9)#|\n|\r”,”",”ALL”);
</cfscript>
<cfoutput>theHTML = “#newDefaultCode#”;</cfoutput>

document.write(theHTML);

This allows me to dynamically write a coldfusion template to the page via javascript.

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Using XSL you can perform recursion techniques on flat XML data. It sounds complicated but really it isn’t.

 Say you have node data like the following (in a flat structure).

<tree>
<node icon="" id="1" objectID="9" parentID="0" recordID="15" ref="sites" title="Sites"/>
<node icon="" id="2" objectID="9" parentID="0" recordID="28" ref="media" title="Template Media"/>
<node icon="" id="3" objectID="9" parentID="0" recordID="31" ref="templates" title="Templates"/>
<node icon="site.png" id="4" objectID="11" parentID="1" recordID="1" ref="refresh--test" title="Refresh"/>
<node icon="page.png" id="5" objectID="1" parentID="4" recordID="134" ref="home" title="Home"/>
<node icon="form.png" id="6" objectID="12" parentID="5" recordID="60" ref="enq_form" title="Enquiry Form"/>
<node icon="form.png" id="7" objectID="12" parentID="5" recordID="61" ref="site_review" title="Site Review"/>
<node icon="menu.png" id="11" objectID="5" parentID="4" recordID="8" ref="topnav" title="Top Nav 2"/>
<node icon="" id="12" objectID="9" parentID="0" recordID="33" ref="users" title="Users"/>
</tree>

Using XSL you can build a hierarchical tree from this data:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0"> <xsl:template match="tree">  

<!-- Starts the tree -->
  <ol>   

<xsl:apply-templates/>  

</ol> 

</xsl:template> 

<!-- Selects root nodes -->
 <xsl:template match="//node[@parentID=0]">   <xsl:call-template name="process-branch">
   <xsl:with-param name="id"><xsl:value-of select="@id"/></xsl:with-param>
   <xsl:with-param name="parentID"><xsl:value-of
select="@parentID"/></xsl:with-param>
  </xsl:call-template> </xsl:template> <!-- Recursive function -->
 <xsl:template name="process-branch">
  <xsl:param name="id"/>
  <xsl:param name="parentID"/>  <xsl:choose>

</xsl:stylesheet>

Obviously you can replace the html with whatever elements you wish, even build hierarchical XML.

You then use the (rather handy) coldfusion function

#XMLTransform(XMLParse(xmldata), xslSheet)#

And there you have it, no long loops with recurring queries!

I think it’s very hard to think about all the functionality you require when you are buying an e-commerce solution. It’s also hard to find something that does everything you want but doesn’t cost too much per-license. Most people who are looking to start a shop don’t often have a lot to spend and they see advertisements like “E-commerce solution £9.99 a month” which makes them question why they have to pay such a hefty price tag for your solution. 

I’d love to hear your thoughts and If you have any recommendations for any other software packages.