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DBIx::Class::Manual::Reading(3)      User Contributed Perl Documentation     DBIx::Class::Manual::Reading(3)



NAME
       DBIx::Class::Manual::Reading - How to read and write DBIx::Class POD.

DESCRIPTION
       This doc should help users to understand how the examples and documentation found in the DBIx::Class
       distribution can be interpreted.

       Writers of DBIx::Class POD should also check here to make sure their additions are consistent with
       the rest of the documentation.

METHODS
       Methods should be documented in the files which also contain the code for the method, or that file
       should be hidden from PAUSE completely, in which case the methods are documented in the file which
       loads it. Methods may also be documented and referred to in files representing the major objects or
       components on which they can be called.

       For example, DBIx::Class::Relationship documents the methods actually coded in the helper
       relationship classes like DBIx::Class::Relationship::BelongsTo. The BelongsTo file itself is hidden
       from PAUSE as it has no documentation. The accessors created by relationships should be mentioned in
       DBIx::Class::Row, the major object that they will be called on.

   Method documentation
       •   Each method starts with a "head2" statement of its name.

           Just the plain method name, not an example of how to call it, or a link.  This is to ensure easy
           linking to method documentation from other POD.

       •   The header is followed by a two-item list. This contains a description of the arguments the
           method is expected to take, and an indication of what the method returns.

           The first item provides a list of all possible values for the arguments of the method in order,
           separated by ", ", preceded by the text "Arguments: "

           Example (for the belongs_to relationship):

             =item Arguments: $accessor_name, $related_class, $fk_column|\%cond|\@cond?, \%attr?

           The following possible argument sigils can be shown:

           •   $var - A scalar (string or numeric) variable.

           •   \%var - A variable containing reference to a hash.

           •   \@var - A variable containing a reference to an array.

           •   \$var - A variable containing a reference to a scalar variable.

           •   %var - A hashref variable (list of key/value pairs) - rarely used in DBIx::Class.

               Reading an argument as a hash variable will consume all subsequent method arguments, use with
               caution.

           •   @var - An array variable (list of values).

               Reading an argument as a array variable will consume all subsequent method arguments, use
               with caution.

           •   ? - Optional, should be placed after the argument type and name.

                 ## Correct
                 \%myhashref|\@myarrayref?

                 ## Wrong
                 \%myhashref?|\@myarrayref

               Applies to the entire argument.

               Optional arguments can be left out of method calls, unless the caller needs to pass in any of
               the following arguments. In which case the caller should pass "undef" in place of the missing
               argument.

           •   | - Alternate argument content types.

               At least one of these must be supplied unless the argument is also marked optional.

           The second item starts with the text "Return value:". The remainder of the line is either the
           text "undefined", a text describing the result of the method, or a variable with a descriptive
           name.

             ## Good examples
             =item Return value: undefined
             =item Return value: A schema object
             =item Return value: $classname

             ## Bad examples
             =item Return value: The names

           "undefined" means the method does not deliberately return a value, and the caller should not use
           or rely on anything it does return. (Perl functions always return something, usually the result
           of the last code statement, if there is no explicit return statement.)

       •   The argument list is followed by a single paragraph describing what the method does.

       •   The description paragraph is followed by another list. Each item in the list explains one of the
           possible argument/type combinations.

           This list may be omitted if the author feels that the variable names are self-explanatory enough
           to not require it. Use best judgement.

       •   The argument list is followed by some examples of how to use the method, using its various types
           of arguments.

           The examples can also include ways to use the results if applicable. For instance, if the
           documentation is for a relationship type, the examples can include how to call the resulting
           relation accessor, how to use the relation name in a search and so on.

           If some of the examples assume default values, these should be shown with and without the actual
           arguments, with hints about the equivalent calls.

           The example should be followed by one or more paragraphs explaining what it does.

           Examples and explaining paragraphs can be repeated as necessary.

AUTHORS
       see DBIx::Class

LICENSE
       You may distribute this code under the same terms as Perl itself.



perl v5.12.5                                     2010-10-07                  DBIx::Class::Manual::Reading(3)