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    <p>The Form scope has a <code>FieldNames</code> variable which will tell you what fields were submitted.</p> <p>You can also do <code>StructKeyList(Form)</code> to get a list of the current variables in the scope. This one will also include FieldNames and any other variables that have since been added to the Form scope.</p> <p>Either of these could be used inside a <code>&lt;cfloop index="CurField" list="#StructKeyList(Form)#"&gt;</code> - but there are easier ways...</p> <p><br/></p> <p>If you are on CF8 you can convert the scope to a string nice and easily with <code>serializeJson()</code> and <code>deserializeJson()</code> functions, which could then be stored in a suitable database field.</p> <p>If you're on CF6..7 then you can download a CFC called <a href="http://cfjson.riaforge.org" rel="nofollow noreferrer">cfjson</a> from <a href="http://www.riaforge.org" rel="nofollow noreferrer">riaforge</a> which mimics these functions.</p> <p><br/></p> <p>Finally, if you're on earlier versions of CF, or have an odd aversion to using JSON for storage, you can roll your own with an even simpler loop to the one hinted above - a collection loop lets you loop directly through a Structure or Scope - note that some annoying person picked 'item' rather than 'index' as the attribute for these.</p> <p>Since we know Form variables are all simple objects (i.e. strings) I've elected for a basic <code>key=value[newline]key=value[newline]...</code> format, which is easy to reverse also.</p> <p>Encoding:</p> <pre><code>&lt;cfset Output = '' /&gt; &lt;cfloop item="CurField" collection="#Form#"&gt; &lt;cfset Output = Output &amp; CurField &amp; '=' &amp; Form[CurField] &amp; Chr(10) /&gt; &lt;/cfloop&gt; &lt;cfoutput&gt;#Output#&lt;/cfoutput&gt; </code></pre> <p>Decoding:</p> <pre><code>&lt;cfset FormData = StructNew()/&gt; &lt;cfloop index="CurLine" list="#Output#" delimiters="#Chr(10)#"&gt; &lt;cfset FormData[ListFirst(CurLine,'=')] = ListRest(CurLine,'=') /&gt; &lt;/cfloop&gt; &lt;cfdump var="#FormData#"/&gt; </code></pre> <p><br/></p> <p>One last important note: As with all user-supplied variables (Form,Url,Cookie scopes) you must make sure you handle them correctly to prevent security holes - specifically <strong><em>make sure you are using cfqueryparam for</em></strong> <strong>all</strong> <strong><em>your database queries</em></strong> - don't want to sidetrack too far, but feel free to ask another question if you need any help with cfqueryparam.</p> <p><br/></p> <p>Hope this helps. :)</p>
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    1. POIn ColdFusion, how can I extract and store the contents of the submitted form?
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    1. USPatrick McElhaney
    1. USPeter Boughton
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    1. CODoh! I knew something didn't seem right there. Thanks for correcting to FieldNames - ColumnList is what queries use.
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