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tmad40blue
PostPosted: Mon Feb 06, 2012 10:25 pm 
Joomla! Fledgling
Joomla! Fledgling

Joined: Mon Feb 06, 2012 10:18 pm
Posts: 4
I can't believe nobody else has had this issue...

I am attempting to install Joomla! 2.5.1. I cannot get past the Database Configuration phase because of the following error:

Joomla! 2.5.1 Installation wrote:
The table prefix must start with a letter, be followed by optional alphanumeric characters and by an underscore


This is unfortunate. My hosting provider does not allow me to change the table prefixes for my database, so it is stuck as 2222_. Is there a fix being worked on for this, or do I need to dive into some files and edit some code?

Thanks!
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tuum
PostPosted: Tue Feb 07, 2012 1:00 am 
Joomla! Enthusiast
Joomla! Enthusiast

Joined: Fri Sep 19, 2008 12:03 am
Posts: 192
Location: Sydney, Australia
I tried this out on my computer, and yes it does seem that there has been a validation rule added to force the prefix to start with a letter.

This is caused by the regex rule in
/installation/models/rules/prefix/prefix.php

//line 24
Code:
protected $regex = '^[a-z][a-z0-9]*_$';



Which is due to /installation/models/forms/database.xml

Code:
         <field name="db_prefix" type="text" id="db_prefix" class="inputbox"
            label="INSTL_DATABASE_PREFIX_LABEL"
            default="jos_"
            required="true"
         />



Which was changed to
Code:
         <field name="db_prefix" type="prefix" id="db_prefix" class="inputbox"
            label="INSTL_DATABASE_PREFIX_LABEL"
            required="true"
            validate="prefix"
            message="INSTL_DATABASE_PREFIX_MSG"
         />



Essentially by changing the field type to "prefix", it causes the prefix rule to validate the field. So you can either adjust the regex string in prefix.php, or change the field type in database.xml to get round this issue.

Sounds like this should be reported as a bug on the Joomla CMS tracker
http://joomlacode.org/gf/project/joomla ... er_id=8103

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tmad40blue
PostPosted: Tue Feb 07, 2012 1:04 am 
Joomla! Fledgling
Joomla! Fledgling

Joined: Mon Feb 06, 2012 10:18 pm
Posts: 4
Thanks so much for the time, tuum. I'll try our your suggestion this evening and report back my results.
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