Propel PostgreSQL Migration unable to find adapter

Question

I am trying to use migrations for the first time on my in-development Propel project (so I don't have to re-insert 15MB of data), but am having some difficulties. I made the changes in my schema and ran propel-gen diff. I first received an error that it couldn't locate my buildtime-conf.xml file. I hadn't made one yet (since it wasn't necessary), but read that the structure should be the same as the runtime-conf.xml. I copied runtime-conf.xml to buildtime-conf.xml. And now receive the following error:

[propel-sql-diff] Reading databases structure...
[phingcall] Unable to find adapter for datasource [project].
Execution of target "sql-diff" failed for the following reason: /var/www/project/vendor/propel/propel1/generator/build-propel.xml:317:26: Execution of the target buildfile failed. Aborting.
    [phing] /var/www/project/vendor/propel/propel1/generator/build-propel.xml:317:26: Execution of the target buildfile failed. Aborting.

My runtime and buildtime files look like the following:

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <propel>
        <datasources default="project">
            <datasource id="project">
                <adapter>pgsql</adapter>
                <connection>
                    <dsn>pgsql:host=###.###.###.###;dbname=database</dsn>
                    <user>USER</user>
                    <password>PASS</password>
                </connection>
            </datasource>
        </datasources>
    </propel>
</config>

My schema is along the lines of this:

<?xml version="1.0" encoding="UTF-8"?>
<database name="project" defaultIdMethod="native">
    <table schema="accounts" name="accounts" phpName="Account" package="accounts">
        <column />
    </table>
</database>

I tried changing the buildtime-conf to <datasource id="testing"> and the error changed to Unable to find adapter for datasource [testing]. So the error lies in the actual buildtime-conf file (not the schema), as far as I can tell. I thought maybe Propel couldn't find PostgreSQL's adapter (even though it works fine in my runtime-conf), so I tried changing my adapter to mysql. It came up with the same unable to find adapter error.

I'm completely lost, thoughts?

Update: so I was able to go into /Propel/runtime/lib/Propel.php and locate the line where the Unable to find adapter exception was thrown. I manually defined the variable by adding the line self::$configuration['datasources'][$name]['adapter'] = 'pgsql' and it works. This obviously isn't verify useful for now, as I won't be able to update Propel without redoing this change. I dumped self::$configuration in Propel.php and it is NULL, any ideas why?

Answer 1

In the latest stable version of Propel (1.7.1) it is inpossible to add the following code:

self::$configuration['datasources'][$name]['adapter'] = 'mysql';

Resulting in the following error:

Indirect modification of overloaded element of PropelConfiguration has no effect

That's why, if you have only one adapter you could use:

/*
if (!isset(self::$configuration['datasources'][$name]['adapter'])) {
    throw new PropelException("Unable to find adapter for datasource [" . $name . "].");
}
*/
$db = DBAdapter::factory('mysql');
// register the adapter for this name
self::$adapterMap[$name] = $db;

This error happens only when using ./propel-gen diff. Still very strange. Hope they fix it soon.

Answer 2

Looks like switching a Composer dependency to dev-master fixes this - there is 20 commits difference between the current release (1.7.1) and master, at the time of writing. The migrations patch specifically is here.

Hopefully a 1.7.2 release will be made in due course, though it should be noted that the team's development effort will likely be focussed on Propel2 at present (still in alpha).