# NAME

Template::Provider::CustomDBIC - Load templates using DBIx::Class

# SYNOPSIS

   use My::CustomDBIC::Schema;
   use Template;
   use Template::Provider::CustomDBIC;

   my $schema = My::CustomDBIC::Schema->connect(
       $dsn, $user, $password, \%options
   );
   my $resultset = $schema->resultset('Template');

If all of your templates are stored in a single table the most convenient
method is to pass the provider a [DBIx::Class::ResultSet](https://metacpan.org/pod/DBIx::Class::ResultSet).

   my $template = Template->new({
       LOAD_TEMPLATES => [
           Template::Provider::CustomDBIC->new({
               RESULTSET => $resultset,
               # Other template options like COMPILE_EXT...
           }),
       ],
   });

   # Process the template in 'column' referred by reference from resultset 'Template'.
   $template->process('table/reference/column');

# DESCRIPTION

Template::Provider::CustomDBIC allows a [Template](https://metacpan.org/pod/Template) object to fetch its data using
[DBIx::Class](https://metacpan.org/pod/DBIx::Class) instead of, or in addition to, the default filesystem-based
[Template::Provider](https://metacpan.org/pod/Template::Provider).

## SCHEMA

This provider requires a schema containing at least the following:

- A column containing the template name. When `$template->provider($name)`
is called the provider will search this column for the corresponding `$name`.
For this reason the column must be a unique key, else an exception will be
raised.
- A column containing the actual template content itself. This is what will be
compiled and returned when the template is processed.
- A column containing the time the template was last modified. This must return
- or be inflated to - a date string recognisable by [Date::Parse](https://metacpan.org/pod/Date::Parse).

## OPTIONS

In addition to supplying a RESULTSET or SCHEMA and the standard
[Template::Provider](https://metacpan.org/pod/Template::Provider) options, you may set the following preferences:

- COLUMN\_NAME

   The table column that contains the template name. This will default to 'name'.

- COLUMN\_CONTENT

   The table column that contains the template data itself. This will default to
   'content'.

- COLUMN\_MODIFIED

   The table column that contains the date that the template was last modified.
   This will default to 'modified'.

# METHODS

## ->fetch( $name )

This method is called automatically during [Template](https://metacpan.org/pod/Template)'s `->process()`
and returns a compiled template for the given `$name`, using the cache where
possible.

# USE WITH OTHER PROVIDERS

By default Template::Provider::CustomDBIC will raise an exception when it cannot
find the named template

   my $template = Template->new({
       LOAD_TEMPLATES => [
           Template::Provider::CustomDBIC->new({
               RESULTSET => $resultset,
           }),
           Template::Provider->new({
               INCLUDE_PATH => $path_to_templates,
           }),
       ],
   });

# CACHING

When caching is enabled, by setting COMPILE\_DIR and/or COMPILE\_EXT,
Template::Provider::CustomDBIC will create a directory consisting of the database
DSN and table name. This should prevent conflicts with other databases and
providers.

# SEE ALSO

[Template](https://metacpan.org/pod/Template), [Template::Provider](https://metacpan.org/pod/Template::Provider), [DBIx::Class::Schema](https://metacpan.org/pod/DBIx::Class::Schema)

# DIAGNOSTICS

In addition to errors raised by [Template::Provider](https://metacpan.org/pod/Template::Provider) and [DBIx::Class](https://metacpan.org/pod/DBIx::Class),
Template::Provider::CustomDBIC may generate the following error messages:

- `A valid DBIx::Class::Schema or ::ResultSet is required`

   One of the SCHEMA or RESULTSET configuration options _must_ be provided.

- `%s not valid: must be of the form $table/$template`

   When using Template::Provider::CustomDBIC with a [DBIx::Class::Schema](https://metacpan.org/pod/DBIx::Class::Schema) object, the
   template name passed to `->process()` must start with the name of the
   result set to search in.

- `'%s' is not a valid result set for the given schema`

   Couldn't find the result set %s in the given [DBIx::Class::Schema](https://metacpan.org/pod/DBIx::Class::Schema) object.

- `Could not retrieve '%s' from the result set '%s'`

# DEPENDENCIES

- [Carp](https://metacpan.org/pod/Carp)
- [Date::Parse](https://metacpan.org/pod/Date::Parse)
- [File::Path](https://metacpan.org/pod/File::Path)
- [File::Spec](https://metacpan.org/pod/File::Spec)
- [Template::Provider](https://metacpan.org/pod/Template::Provider)

Additionally, use of this module requires an object of the class
[DBIx::Class::Schema](https://metacpan.org/pod/DBIx::Class::Schema) or [DBIx::Class::ResultSet](https://metacpan.org/pod/DBIx::Class::ResultSet).

# BUGS

Please report any bugs or feature requests through the web interface at
[https://github.com/itnode/Template-Provider-CustomDBIC/issues](https://github.com/itnode/Template-Provider-CustomDBIC/issues)

# SUPPORT

You can find documentation for this module with the perldoc command.

   perldoc Template::Provider::CustomDBIC

You may also look for information at:

- Template::Provider::CustomDBIC
- AnnoCPAN: Annotated CPAN documentation
- RT: CPAN's request tracker

   [https://github.com/itnode/Template-Provider-CustomDBIC/issues](https://github.com/itnode/Template-Provider-CustomDBIC/issues)

- Search CPAN

# AUTHOR

Jens Gassmann <[email protected]>

Based on work from Dave Cardwell <[email protected]>

# COPYRIGHT AND LICENSE

Copyright (c) 2015 Jens Gassmann. All rights reserved.

This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See [perlartistic](https://metacpan.org/pod/perlartistic).