=item *
-B<Do NOT get arguments through "C<CaptureArgs()>," use "C<Args()>" instead to end a chain>
+B<< Do NOT get arguments through "C<CaptureArgs()>," use "C<Args()>" instead to end a chain >>
=item *
<form method="post" action="[% c.uri_for('form_create_do') %]">
<table>
- <tr><td>Title:</td><td><input type="text" name="title"></td></tr>
- <tr><td>Rating:</td><td><input type="text" name="rating"></td></tr>
- <tr><td>Author ID:</td><td><input type="text" name="author_id"></td></tr>
+ <tr><td>Title:</td><td><input type="text" name="title"></td></tr>
+ <tr><td>Rating:</td><td><input type="text" name="rating"></td></tr>
+ <tr><td>Author ID:</td><td><input type="text" name="author_id"></td></tr>
</table>
<input type="submit" name="Submit" value="Submit">
</form>
<tr><th>Title</th><th>Rating</th><th>Author(s)</th><th>Links</th></tr>
[% # Display each book in a table row %]
[% FOREACH book IN books -%]
- <tr>
- <td>[% book.title %]</td>
- <td>[% book.rating %]</td>
- <td>
- [% # NOTE: See Chapter 4 for a better way to do this! -%]
- [% # First initialize a TT variable to hold a list. Then use a TT FOREACH -%]
- [% # loop in 'side effect notation' to load just the last names of the -%]
- [% # authors into the list. Note that the 'push' TT vmethod doesn't return -%]
- [% # a value, so nothing will be printed here. But, if you have something -%]
- [% # in TT that does return a value and you don't want it printed, you -%]
- [% # 1) assign it to a bogus value, or -%]
- [% # 2) use the CALL keyword to call it and discard the return value. -%]
- [% tt_authors = [ ];
- tt_authors.push(author.last_name) FOREACH author = book.authors %]
- [% # Now use a TT 'virtual method' to display the author count in parens -%]
- [% # Note the use of the TT filter "| html" to escape dangerous characters -%]
- ([% tt_authors.size | html %])
- [% # Use another TT vmethod to join & print the names & comma separators -%]
- [% tt_authors.join(', ') | html %]
- </td>
- <td>
- [% # Add a link to delete a book %]
- <a href="[%
- c.uri_for(c.controller.action_for('delete'), [book.id]) %]">Delete</a>
- </td>
- </tr>
+ <tr>
+ <td>[% book.title %]</td>
+ <td>[% book.rating %]</td>
+ <td>
+ [% # NOTE: See Chapter 4 for a better way to do this! -%]
+ [% # First initialize a TT variable to hold a list. Then use a TT FOREACH -%]
+ [% # loop in 'side effect notation' to load just the last names of the -%]
+ [% # authors into the list. Note that the 'push' TT vmethod doesn't return -%]
+ [% # a value, so nothing will be printed here. But, if you have something -%]
+ [% # in TT that does return a value and you don't want it printed, you -%]
+ [% # 1) assign it to a bogus value, or -%]
+ [% # 2) use the CALL keyword to call it and discard the return value. -%]
+ [% tt_authors = [ ];
+ tt_authors.push(author.last_name) FOREACH author = book.authors %]
+ [% # Now use a TT 'virtual method' to display the author count in parens -%]
+ [% # Note the use of the TT filter "| html" to escape dangerous characters -%]
+ ([% tt_authors.size | html %])
+ [% # Use another TT vmethod to join & print the names & comma separators -%]
+ [% tt_authors.join(', ') | html %]
+ </td>
+ <td>
+ [% # Add a link to delete a book %]
+ <a href="[%
+ c.uri_for(c.controller.action_for('delete'), [book.id]) %]">Delete</a>
+ </td>
+ </tr>
[% END -%]
</table>
=head2 Create a ResultSet Class
An often overlooked but extremely powerful features of DBIC is that it
-allows you to supply your own subclasses of C<DBIx::Class::ResultSet>.
+allows you to supply your own subclasses of L<DBIx::Class::ResultSet>.
This can be used to pull complex and unsightly "query code" out of your
controllers and encapsulate it in a method of your ResultSet Class.
These "canned queries" in your ResultSet Class can then be invoked via a
=head2 Chaining ResultSets
-One of the most helpful and powerful features in C<DBIx::Class> is that
+One of the most helpful and powerful features in L<DBIx::Class> is that
it allows you to "chain together" a series of queries (note that this
has nothing to do with the "Chained Dispatch" for Catalyst that we were
discussing earlier). Because each ResultSet method returns another
...
<td>
- [% # NOTE: See Chapter 4 for a better way to do this! -%]
- [% # First initialize a TT variable to hold a list. Then use a TT FOREACH -%]
- [% # loop in 'side effect notation' to load just the last names of the -%]
- [% # authors into the list. Note that the 'push' TT vmethod does not print -%]
- [% # a value, so nothing will be printed here. But, if you have something -%]
- [% # in TT that does return a method and you don't want it printed, you -%]
- [% # can: 1) assign it to a bogus value, or 2) use the CALL keyword to -%]
- [% # call it and discard the return value. -%]
- [% tt_authors = [ ];
- tt_authors.push(author.full_name) FOREACH author = book.authors %]
- [% # Now use a TT 'virtual method' to display the author count in parens -%]
- [% # Note the use of the TT filter "| html" to escape dangerous characters -%]
- ([% tt_authors.size | html %])
- [% # Use another TT vmethod to join & print the names & comma separators -%]
- [% tt_authors.join(', ') | html %]
+ [% # NOTE: See Chapter 4 for a better way to do this! -%]
+ [% # First initialize a TT variable to hold a list. Then use a TT FOREACH -%]
+ [% # loop in 'side effect notation' to load just the last names of the -%]
+ [% # authors into the list. Note that the 'push' TT vmethod does not print -%]
+ [% # a value, so nothing will be printed here. But, if you have something -%]
+ [% # in TT that does return a method and you don't want it printed, you -%]
+ [% # can: 1) assign it to a bogus value, or 2) use the CALL keyword to -%]
+ [% # call it and discard the return value. -%]
+ [% tt_authors = [ ];
+ tt_authors.push(author.full_name) FOREACH author = book.authors %]
+ [% # Now use a TT 'virtual method' to display the author count in parens -%]
+ [% # Note the use of the TT filter "| html" to escape dangerous characters -%]
+ ([% tt_authors.size | html %])
+ [% # Use another TT vmethod to join & print the names & comma separators -%]
+ [% tt_authors.join(', ') | html %]
</td>
...
...
<td>
- [% # Print count and author list using Result Class methods -%]
- ([% book.author_count | html %]) [% book.author_list | html %]
+ [% # Print count and author list using Result Class methods -%]
+ ([% book.author_count | html %]) [% book.author_list | html %]
</td>
...
Copyright 2006-2011, Kennedy Clark, under the
Creative Commons Attribution Share-Alike License Version 3.0
-(L<http://creativecommons.org/licenses/by-sa/3.0/us/>).
+(L<https://creativecommons.org/licenses/by-sa/3.0/us/>).
projects / catagits/Catalyst-Manual.git / blobdiff