Commit | Line | Data |
b80f58e5 |
1 | =head1 NAME |
2 | |
3ab6187c |
3 | Catalyst::Manual::Tutorial::09_AdvancedCRUD::09_FormFu - Catalyst Tutorial - Chapter 9: Advanced CRUD - FormFu |
b80f58e5 |
4 | |
5 | |
6 | =head1 OVERVIEW |
7 | |
4b4d3884 |
8 | This is B<Chapter 9 of 10> for the Catalyst tutorial. |
b80f58e5 |
9 | |
10 | L<Tutorial Overview|Catalyst::Manual::Tutorial> |
11 | |
12 | =over 4 |
13 | |
14 | =item 1 |
15 | |
3ab6187c |
16 | L<Introduction|Catalyst::Manual::Tutorial::01_Intro> |
b80f58e5 |
17 | |
18 | =item 2 |
19 | |
3ab6187c |
20 | L<Catalyst Basics|Catalyst::Manual::Tutorial::02_CatalystBasics> |
b80f58e5 |
21 | |
22 | =item 3 |
23 | |
3ab6187c |
24 | L<More Catalyst Basics|Catalyst::Manual::Tutorial::03_MoreCatalystBasics> |
b80f58e5 |
25 | |
26 | =item 4 |
27 | |
3ab6187c |
28 | L<Basic CRUD|Catalyst::Manual::Tutorial::04_BasicCRUD> |
b80f58e5 |
29 | |
30 | =item 5 |
31 | |
3ab6187c |
32 | L<Authentication|Catalyst::Manual::Tutorial::05_Authentication> |
b80f58e5 |
33 | |
34 | =item 6 |
35 | |
3ab6187c |
36 | L<Authorization|Catalyst::Manual::Tutorial::06_Authorization> |
b80f58e5 |
37 | |
38 | =item 7 |
39 | |
3ab6187c |
40 | L<Debugging|Catalyst::Manual::Tutorial::07_Debugging> |
b80f58e5 |
41 | |
42 | =item 8 |
43 | |
3ab6187c |
44 | L<Testing|Catalyst::Manual::Tutorial::08_Testing> |
b80f58e5 |
45 | |
46 | =item 9 |
47 | |
3ab6187c |
48 | B<09_Advanced CRUD::09_FormFu> |
b80f58e5 |
49 | |
50 | =item 10 |
51 | |
3ab6187c |
52 | L<Appendices|Catalyst::Manual::Tutorial::10_Appendices> |
b80f58e5 |
53 | |
54 | =back |
55 | |
56 | |
57 | =head1 DESCRIPTION |
58 | |
16d0d396 |
59 | This portion of the tutorial explores L<HTML::FormFu> and how it can be |
60 | used to manage forms, perform validation of form input, as well as save |
c016427f |
61 | and restore data to/from the database. |
cca5cd98 |
62 | |
16d0d396 |
63 | See L<Catalyst::Manual::Tutorial::09_AdvancedCRUD> for additional form |
64 | management options other than L<HTML::FormFu>. |
cca5cd98 |
65 | |
66 | |
8a472b34 |
67 | =head1 HTML::FormFu FORM CREATION |
cca5cd98 |
68 | |
16d0d396 |
69 | This section looks at how L<HTML::FormFu> can be used to add additional |
c016427f |
70 | functionality to the manually created form from |
71 | L<Chapter 4|Catalyst::Manual::Tutorial::04_BasicCRUD>. |
cca5cd98 |
72 | |
73 | |
8a472b34 |
74 | =head2 Inherit From Catalyst::Controller::HTML::FormFu |
cca5cd98 |
75 | |
76 | First, change your C<lib/MyApp/Controller/Books.pm> to inherit from |
16d0d396 |
77 | L<Catalyst::Controller::HTML::FormFu> by changing the C<extends> line |
78 | from the default of: |
cca5cd98 |
79 | |
96a87356 |
80 | BEGIN {extends 'Catalyst::Controller'; } |
cca5cd98 |
81 | |
82 | to use the FormFu base controller class: |
83 | |
96a87356 |
84 | BEGIN {extends 'Catalyst::Controller::HTML::FormFu'; } |
cca5cd98 |
85 | |
9372a4db |
86 | Don't forget to add: |
87 | |
c016427f |
88 | requires 'HTML::FormFu'; |
9372a4db |
89 | requires 'Catalyst::Controller::HTML::FormFu'; |
c016427f |
90 | requires 'requires 'HTML::FormFu::Model::DBIC';'; |
9372a4db |
91 | |
92 | to your C<Makefile.PL>. |
cca5cd98 |
93 | |
c016427f |
94 | |
cca5cd98 |
95 | =head2 Add Action to Display and Save the Form |
96 | |
97 | Open C<lib/MyApp/Controller/Books.pm> in your editor and add the |
98 | following method: |
99 | |
d682d02d |
100 | =head2 formfu_create |
cca5cd98 |
101 | |
59d6a035 |
102 | Use HTML::FormFu to create a new book |
cca5cd98 |
103 | |
104 | =cut |
105 | |
ccc9b2bc |
106 | sub formfu_create :Chained('base') :PathPart('formfu_create') :Args(0) :FormConfig { |
cca5cd98 |
107 | my ($self, $c) = @_; |
108 | |
109 | # Get the form that the :FormConfig attribute saved in the stash |
110 | my $form = $c->stash->{form}; |
3dba69ab |
111 | |
166c90a0 |
112 | # Check if the form has been submitted (vs. displaying the initial |
113 | # form) and if the data passed validation. "submitted_and_valid" |
cca5cd98 |
114 | # is shorthand for "$form->submitted && !$form->has_errors" |
115 | if ($form->submitted_and_valid) { |
116 | # Create a new book |
3b1fa91b |
117 | my $book = $c->model('DB::Book')->new_result({}); |
cca5cd98 |
118 | # Save the form data for the book |
aee27483 |
119 | $form->model->update($book); |
c016427f |
120 | # Set a status message for the user & return to books list |
121 | $c->response->redirect($c->uri_for($self->action_for('list'), |
122 | {mid => $c->set_status_msg("Book created")})); |
cca5cd98 |
123 | $c->detach; |
9cb64a37 |
124 | } else { |
125 | # Get the authors from the DB |
3b1fa91b |
126 | my @author_objs = $c->model("DB::Author")->all(); |
9cb64a37 |
127 | # Create an array of arrayrefs where each arrayref is an author |
128 | my @authors; |
acbd7bdd |
129 | foreach (sort {$a->last_name cmp $b->last_name} @author_objs) { |
9cb64a37 |
130 | push(@authors, [$_->id, $_->last_name]); |
131 | } |
132 | # Get the select added by the config file |
133 | my $select = $form->get_element({type => 'Select'}); |
134 | # Add the authors to it |
135 | $select->options(\@authors); |
136 | } |
3dba69ab |
137 | |
cca5cd98 |
138 | # Set the template |
766e64ba |
139 | $c->stash(template => 'books/formfu_create.tt2'); |
cca5cd98 |
140 | } |
141 | |
142 | |
143 | =head2 Create a Form Config File |
144 | |
145 | Although C<HTML::FormFu> supports any configuration file handled by |
16d0d396 |
146 | L<Config::Any>, most people tend to use YAML. First create a directory |
147 | to hold your form configuration files: |
cca5cd98 |
148 | |
c016427f |
149 | $ mkdir -p root/forms/books |
cca5cd98 |
150 | |
16d0d396 |
151 | Then create the file C<root/forms/books/formfu_create.yml> and enter the |
cca5cd98 |
152 | following text: |
153 | |
154 | --- |
9cb64a37 |
155 | # indicator is the field that is used to test for form submission |
cca5cd98 |
156 | indicator: submit |
9cb64a37 |
157 | # Start listing the form elements |
cca5cd98 |
158 | elements: |
9cb64a37 |
159 | # The first element will be a text field for the title |
cca5cd98 |
160 | - type: Text |
161 | name: title |
162 | label: Title |
9cb64a37 |
163 | # This is an optional 'mouse over' title pop-up |
cca5cd98 |
164 | attributes: |
165 | title: Enter a book title here |
d682d02d |
166 | |
167 | # Another text field for the numeric rating |
cca5cd98 |
168 | - type: Text |
169 | name: rating |
170 | label: Rating |
171 | attributes: |
172 | title: Enter a rating between 1 and 5 here |
d682d02d |
173 | |
174 | # Add a drop-down list for the author selection. Note that we will |
175 | # dynamically fill in all the authors from the controller but we |
176 | # could manually set items in the drop-list by adding this YAML code: |
177 | # options: |
178 | # - [ '1', 'Bastien' ] |
179 | # - [ '2', 'Nasseh' ] |
180 | - type: Select |
181 | name: authors |
182 | label: Author |
183 | |
9cb64a37 |
184 | # The submit button |
cca5cd98 |
185 | - type: Submit |
186 | name: submit |
187 | value: Submit |
188 | |
16d0d396 |
189 | B<NOTE:> Copying and pasting YAML from Perl documentation is sometimes |
1fba2369 |
190 | tricky. See the L<Config::General Config for this tutorial> section of |
191 | this document for a more foolproof config format. |
0171092f |
192 | |
cca5cd98 |
193 | |
194 | =head2 Update the CSS |
195 | |
16d0d396 |
196 | Edit C<root/static/css/main.css> and add the following lines to the |
197 | bottom of the file: |
cca5cd98 |
198 | |
acbd7bdd |
199 | ... |
d682d02d |
200 | input { |
cca5cd98 |
201 | display: block; |
202 | } |
d682d02d |
203 | select { |
cca5cd98 |
204 | display: block; |
205 | } |
d682d02d |
206 | .submit { |
207 | padding-top: .5em; |
208 | display: block; |
cca5cd98 |
209 | } |
210 | |
0a699832 |
211 | These changes will display form elements vertically. |
cca5cd98 |
212 | |
213 | |
214 | =head2 Create a Template Page To Display The Form |
215 | |
16d0d396 |
216 | Open C<root/src/books/formfu_create.tt2> in your editor and enter the |
217 | following: |
cca5cd98 |
218 | |
219 | [% META title = 'Create/Update Book' %] |
220 | |
221 | [%# Render the HTML::FormFu Form %] |
222 | [% form %] |
223 | |
aeaa7db5 |
224 | <p><a href="[% c.uri_for(c.controller.action_for('list')) |
225 | %]">Return to book list</a></p> |
cca5cd98 |
226 | |
227 | |
228 | =head2 Add Links for Create and Update via C<HTML::FormFu> |
229 | |
230 | Open C<root/src/books/list.tt2> in your editor and add the following to |
231 | the bottom of the existing file: |
232 | |
acbd7bdd |
233 | ... |
cca5cd98 |
234 | <p> |
235 | HTML::FormFu: |
e075db0c |
236 | <a href="[% c.uri_for(c.controller.action_for('formfu_create')) %]">Create</a> |
cca5cd98 |
237 | </p> |
238 | |
16d0d396 |
239 | This adds a new link to the bottom of the book list page that we can use |
240 | to easily launch our HTML::FormFu-based form. |
d682d02d |
241 | |
cca5cd98 |
242 | |
8a472b34 |
243 | =head2 Test The HTML::FormFu Create Form |
cca5cd98 |
244 | |
aeaa7db5 |
245 | Make sure the server is running with the "-r" restart option: |
cca5cd98 |
246 | |
aeaa7db5 |
247 | $ script/myapp_server.pl -r |
cca5cd98 |
248 | |
0909d46f |
249 | Login as C<test01> (password: mypass). Once at the Book List page, |
250 | click the new HTML::FormFu "Create" link at the bottom to display the |
3b1fa91b |
251 | form. Fill in the following values: |
d682d02d |
252 | |
aeaa7db5 |
253 | Title: Internetworking with TCP/IP Vol. II |
254 | Rating: 4 |
255 | Author: Comer |
256 | |
c016427f |
257 | Click the "Submit" button, and you will be returned to the Book List page |
3b1fa91b |
258 | with a "Book created" status message displayed. |
259 | |
260 | Also note that this implementation allows you to create books with any |
16d0d396 |
261 | bogus information. Although we have constrained the authors with the |
262 | drop-down list (note that this isn't bulletproof because we still have |
263 | not prevented a user from "hacking" the form to specify other values), |
264 | there are no restrictions on items such as the length of the title (for |
265 | example, you can create a one-letter title) and the value of the rating |
266 | (you can use any number you want, and even non-numeric values with |
59d6a035 |
267 | SQLite). The next section will address this concern. |
cca5cd98 |
268 | |
269 | B<Note:> Depending on the database you are using and how you established |
270 | the columns in your tables, the database could obviously provide various |
271 | levels of "type enforcement" on your data. The key point being made in |
272 | the previous paragraph is that the I<web application> itself is not |
273 | performing any validation. |
274 | |
275 | |
8a472b34 |
276 | =head1 HTML::FormFu VALIDATION AND FILTERING |
cca5cd98 |
277 | |
16d0d396 |
278 | Although the use of L<HTML::FormFu> in the previous section did provide |
279 | an automated mechanism to build the form, the real power of this module |
280 | stems from functionality that can automatically validate and filter the |
281 | user input. Validation uses constraints to be sure that users input |
282 | appropriate data (for example, that the email field of a form contains a |
283 | valid email address). Filtering can also be used to remove extraneous |
284 | whitespace from fields or to escape meta-characters in user input. |
cca5cd98 |
285 | |
cca5cd98 |
286 | |
d682d02d |
287 | =head2 Add Constraints |
cca5cd98 |
288 | |
16d0d396 |
289 | Open C<root/forms/books/formfu_create.yml> in your editor and update it |
cca5cd98 |
290 | to match: |
291 | |
292 | --- |
9cb64a37 |
293 | # indicator is the field that is used to test for form submission |
cca5cd98 |
294 | indicator: submit |
9cb64a37 |
295 | # Start listing the form elements |
cca5cd98 |
296 | elements: |
9cb64a37 |
297 | # The first element will be a text field for the title |
cca5cd98 |
298 | - type: Text |
299 | name: title |
300 | label: Title |
9cb64a37 |
301 | # This is an optional 'mouse over' title pop-up |
cca5cd98 |
302 | attributes: |
303 | title: Enter a book title here |
9cb64a37 |
304 | # Add constraints for the field |
cca5cd98 |
305 | constraints: |
59d6a035 |
306 | # Force the length to be between 5 and 40 chars |
cca5cd98 |
307 | - type: Length |
d682d02d |
308 | min: 5 |
59d6a035 |
309 | max: 40 |
9cb64a37 |
310 | # Override the default of 'Invalid input' |
59d6a035 |
311 | message: Length must be between 5 and 40 characters |
ab0db558 |
312 | |
d682d02d |
313 | # Another text field for the numeric rating |
cca5cd98 |
314 | - type: Text |
315 | name: rating |
316 | label: Rating |
317 | attributes: |
318 | title: Enter a rating between 1 and 5 here |
d682d02d |
319 | # Use Filter to clean up the input data |
ab0db558 |
320 | # Could use 'NonNumeric' below, but since Filters apply *before* |
321 | # constraints, it would conflict with the 'Integer' constraint below. |
322 | # So let's skip this and just use the constraint. |
323 | #filter: |
d682d02d |
324 | # Remove everything except digits |
ab0db558 |
325 | #- NonNumeric |
d682d02d |
326 | # Add constraints to the field |
cca5cd98 |
327 | constraints: |
9cb64a37 |
328 | # Make sure it's a number |
ab0db558 |
329 | - type: Integer |
330 | message: "Required. Digits only, please." |
331 | # Check the min & max values |
332 | - type: Range |
333 | min: 1 |
334 | max: 5 |
335 | message: "Must be between 1 and 5." |
d682d02d |
336 | |
337 | # Add a select list for the author selection. Note that we will |
338 | # dynamically fill in all the authors from the controller but we |
339 | # could manually set items in the select by adding this YAML code: |
340 | # options: |
341 | # - [ '1', 'Bastien' ] |
342 | # - [ '2', 'Nasseh' ] |
343 | - type: Select |
344 | name: authors |
345 | label: Author |
346 | # Convert the drop-down to a multi-select list |
347 | multiple: 1 |
348 | # Display 3 entries (user can scroll to see others) |
349 | size: 3 |
350 | # One could argue we don't need to do filters or constraints for |
351 | # a select list, but it's smart to do validation and sanity |
352 | # checks on this data in case a user "hacks" the input |
d682d02d |
353 | # Add constraints to the field |
354 | constraints: |
d682d02d |
355 | # Make sure it's a number |
356 | - Integer |
357 | |
9cb64a37 |
358 | # The submit button |
cca5cd98 |
359 | - type: Submit |
360 | name: submit |
361 | value: Submit |
d682d02d |
362 | |
f279297a |
363 | # Global filters and constraints. |
cca5cd98 |
364 | constraints: |
c016427f |
365 | # The user cannot leave any fields blank |
366 | - Required |
367 | # If not all fields are required, move the Required constraint to the |
368 | # fields that are |
f279297a |
369 | filter: |
c016427f |
370 | # Remove whitespace at both ends |
371 | - TrimEdges |
372 | # Escape HTML characters for safety |
373 | - HTMLEscape |
cca5cd98 |
374 | |
16d0d396 |
375 | B<NOTE:> Copying and pasting YAML from Perl documentation is sometimes |
1fba2369 |
376 | tricky. See the L<Config::General Config for this tutorial> section of |
377 | this document for a more foolproof config format. |
0171092f |
378 | |
d682d02d |
379 | The main changes are: |
380 | |
381 | =over 4 |
382 | |
383 | =item * |
384 | |
385 | The C<Select> element for C<authors> is changed from a single-select |
16d0d396 |
386 | drop-down to a multi-select list by adding configuration for the |
d682d02d |
387 | C<multiple> and C<size> options in C<formfu_create.yml>. |
388 | |
389 | =item * |
390 | |
391 | Constraints are added to provide validation of the user input. See |
16d0d396 |
392 | L<HTML::FormFu::Constraint> for other constraints that are available. |
d682d02d |
393 | |
394 | =item * |
395 | |
16d0d396 |
396 | A variety of filters are run on every field to remove and escape |
397 | unwanted input. See L<HTML::FormFu::Filter> for more filter options. |
d682d02d |
398 | |
399 | =back |
400 | |
401 | |
402 | =head2 Try Out the Updated Form |
403 | |
16d0d396 |
404 | Make sure you are still logged in as C<test01> and try adding a book |
405 | with various errors: title less than 5 characters, non-numeric rating, a |
406 | rating of 0 or 6, etc. Also try selecting one, two, and zero authors. |
407 | When you click Submit, the HTML::FormFu C<constraint> items will |
408 | validate the logic and insert feedback as appropriate. Try adding blank |
409 | spaces at the front or the back of the title and note that it will be |
59d6a035 |
410 | removed. |
411 | |
c016427f |
412 | Note that you can update your FormFu YAML forms and the development |
413 | server does not need to reload -- the form definition is read from |
414 | the YAML file each time a controller action uses it. |
415 | |
59d6a035 |
416 | |
417 | =head1 CREATE AND UPDATE/EDIT ACTION |
418 | |
16d0d396 |
419 | Let's expand the work done above to add an edit action. First, open |
420 | C<lib/MyApp/Controller/Books.pm> and add the following method to the |
59d6a035 |
421 | bottom: |
422 | |
423 | =head2 formfu_edit |
424 | |
425 | Use HTML::FormFu to update an existing book |
426 | |
427 | =cut |
428 | |
acbd7bdd |
429 | sub formfu_edit :Chained('object') :PathPart('formfu_edit') :Args(0) |
430 | :FormConfig('books/formfu_create.yml') { |
ccc9b2bc |
431 | my ($self, $c) = @_; |
59d6a035 |
432 | |
faa6f5bc |
433 | # Get the specified book already saved by the 'object' method |
ccc9b2bc |
434 | my $book = $c->stash->{object}; |
59d6a035 |
435 | |
436 | # Make sure we were able to get a book |
437 | unless ($book) { |
c016427f |
438 | # Set an error message for the user & return to books list |
439 | $c->response->redirect($c->uri_for($self->action_for('list'), |
440 | {mid => $c->set_error_msg("Invalid book -- Cannot edit")})); |
59d6a035 |
441 | $c->detach; |
442 | } |
443 | |
444 | # Get the form that the :FormConfig attribute saved in the stash |
445 | my $form = $c->stash->{form}; |
446 | |
166c90a0 |
447 | # Check if the form has been submitted (vs. displaying the initial |
448 | # form) and if the data passed validation. "submitted_and_valid" |
59d6a035 |
449 | # is shorthand for "$form->submitted && !$form->has_errors" |
450 | if ($form->submitted_and_valid) { |
451 | # Save the form data for the book |
aee27483 |
452 | $form->model->update($book); |
59d6a035 |
453 | # Set a status message for the user |
c016427f |
454 | # Set a status message for the user & return to books list |
455 | $c->response->redirect($c->uri_for($self->action_for('list'), |
456 | {mid => $c->set_status_msg("Book edited")})); |
59d6a035 |
457 | $c->detach; |
458 | } else { |
459 | # Get the authors from the DB |
3b1fa91b |
460 | my @author_objs = $c->model("DB::Author")->all(); |
59d6a035 |
461 | # Create an array of arrayrefs where each arrayref is an author |
462 | my @authors; |
ccc9b2bc |
463 | foreach (sort {$a->last_name cmp $b->last_name} @author_objs) { |
59d6a035 |
464 | push(@authors, [$_->id, $_->last_name]); |
465 | } |
466 | # Get the select added by the config file |
467 | my $select = $form->get_element({type => 'Select'}); |
468 | # Add the authors to it |
469 | $select->options(\@authors); |
470 | # Populate the form with existing values from DB |
aee27483 |
471 | $form->model->default_values($book); |
59d6a035 |
472 | } |
473 | |
474 | # Set the template |
766e64ba |
475 | $c->stash(template => 'books/formfu_create.tt2'); |
59d6a035 |
476 | } |
477 | |
16d0d396 |
478 | Most of this code should look familiar to what we used in the |
479 | C<formfu_create> method (in fact, we should probably centralize some of |
59d6a035 |
480 | the common code in separate methods). The main differences are: |
481 | |
482 | =over 4 |
483 | |
484 | =item * |
485 | |
16d0d396 |
486 | We have to manually specify the name of the FormFu .yml file as an |
487 | argument to C<:FormConfig> because the name can no longer be |
ccc9b2bc |
488 | automatically deduced from the name of our action/method (by default, |
489 | FormFu would look for a file named C<books/formfu_edit.yml>). |
59d6a035 |
490 | |
491 | =item * |
492 | |
16d0d396 |
493 | We load the book object from the stash (found using the $id passed to |
ccc9b2bc |
494 | the Chained object method) |
59d6a035 |
495 | |
496 | =item * |
497 | |
ccc9b2bc |
498 | We use C<$id> to look up the existing book from the database. |
499 | |
500 | =item * |
59d6a035 |
501 | |
16d0d396 |
502 | We make sure the book lookup returned a valid book. If not, we set the |
503 | error message and return to the book list. |
2314f851 |
504 | |
59d6a035 |
505 | =item * |
506 | |
16d0d396 |
507 | If the form has been submitted and passes validation, we skip creating a |
508 | new book and just use C<$form-E<gt>model-E<gt>update> to update the |
509 | existing book. |
59d6a035 |
510 | |
511 | =item * |
512 | |
16d0d396 |
513 | If the form is being displayed for the first time (or has failed |
59d6a035 |
514 | validation and it being redisplayed), we use |
16d0d396 |
515 | C<$form-E<gt>model-E<gt>default_values> to populate the form with data |
516 | from the database. |
59d6a035 |
517 | |
518 | =back |
519 | |
16d0d396 |
520 | Then, edit C<root/src/books/list.tt2> and add a new link below the |
521 | existing "Delete" link that allows us to edit/update each existing book. |
522 | The last E<lt>tdE<gt> cell in the book list table should look like the |
59d6a035 |
523 | following: |
524 | |
ab0db558 |
525 | ... |
59d6a035 |
526 | <td> |
527 | [% # Add a link to delete a book %] |
c016427f |
528 | <a href="[% |
529 | c.uri_for(c.controller.action_for('delete'), [book.id]) %]">Delete</a> |
59d6a035 |
530 | [% # Add a link to edit a book %] |
c016427f |
531 | <a href="[% |
532 | c.uri_for(c.controller.action_for('formfu_edit'), [book.id]) %]">Edit</a> |
59d6a035 |
533 | </td> |
ab0db558 |
534 | ... |
535 | |
c016427f |
536 | B<Note:> Only add three lines (the "Add a link to edit a book" comment and |
16d0d396 |
537 | the href for C<formfu_edit>). Make sure you add it below the existing |
538 | C<delete> link. |
59d6a035 |
539 | |
540 | |
541 | =head2 Try Out the Edit/Update Feature |
542 | |
16d0d396 |
543 | Make sure you are still logged in as C<test01> and go to the |
544 | L<http://localhost:3000/books/list> URL in your browser. Click the |
545 | "Edit" link next to "Internetworking with TCP/IP Vol. II", change the |
546 | rating to a 3, the "II" at end of the title to the number "2", add |
547 | Stevens as a co-author (control-click), and click Submit. You will then |
548 | be returned to the book list with a "Book edited" message at the top in |
59d6a035 |
549 | green. Experiment with other edits to various books. |
d682d02d |
550 | |
8a472b34 |
551 | |
5fe0e6dd |
552 | =head2 More Things to Try |
553 | |
554 | You are now armed with enough knowledge to be dangerous. You can keep |
555 | tweaking the example application; some things you might want to do: |
556 | |
557 | =over 4 |
558 | |
559 | =item * |
560 | |
acbd7bdd |
561 | Add an appropriate authorization check to the new Edit function. |
5fe0e6dd |
562 | |
563 | =item * |
564 | |
565 | Cleanup the List page so that the Login link only displays when the user |
566 | isn't logged in and the Logout link only displays when a user is logged |
567 | in. |
568 | |
569 | =item * |
570 | |
571 | Add a more sensible policy for when and how users and admins can do |
572 | things in the CRUD cycle. |
573 | |
574 | =item * |
575 | |
576 | Support the CRUD cycle for authors. |
577 | |
578 | =back |
579 | |
580 | Or you can proceed to write your own application, which is probably the |
581 | real reason you worked through this Tutorial in the first place. |
cca5cd98 |
582 | |
8a472b34 |
583 | |
766e64ba |
584 | =head2 Config::General Config for this tutorial |
1fba2369 |
585 | |
586 | If you are having difficulty with YAML config above, please save the |
587 | below into the file C<formfu_create.conf> and delete the |
16d0d396 |
588 | C<formfu_create.yml> file. The below is in L<Config::General> format |
589 | which follows the syntax of Apache config files. |
1fba2369 |
590 | |
591 | constraints Required |
592 | <elements> |
1fba2369 |
593 | <constraints> |
594 | min 5 |
595 | max 40 |
596 | type Length |
597 | message Length must be between 5 and 40 characters |
598 | </constraints> |
599 | filter TrimEdges |
600 | filter HTMLEscape |
601 | name title |
602 | type Text |
603 | label Title |
604 | <attributes> |
605 | title Enter a book title here |
606 | </attributes> |
607 | </elements> |
608 | <elements> |
1fba2369 |
609 | constraints Integer |
610 | filter TrimEdges |
611 | filter NonNumeric |
612 | name rating |
613 | type Text |
614 | label Rating |
615 | <attributes> |
616 | title Enter a rating between 1 and 5 here |
617 | </attributes> |
618 | </elements> |
619 | <elements> |
620 | constraints Integer |
621 | filter TrimEdges |
622 | filter HTMLEscape |
623 | name authors |
624 | type Select |
625 | label Author |
626 | multiple 1 |
627 | size 3 |
628 | </elements> |
629 | <elements> |
630 | value Submit |
631 | name submit |
632 | type Submit |
633 | </elements> |
634 | indicator submit |
3dba69ab |
635 | |
1fba2369 |
636 | |
cca5cd98 |
637 | =head1 AUTHOR |
638 | |
639 | Kennedy Clark, C<hkclark@gmail.com> |
640 | |
53243324 |
641 | Feel free to contact the author for any errors or suggestions, but the |
642 | best way to report issues is via the CPAN RT Bug system at |
643 | <https://rt.cpan.org/Public/Dist/Display.html?Name=Catalyst-Manual>. |
644 | |
645 | The most recent version of the Catalyst Tutorial can be found at |
59884771 |
646 | L<http://dev.catalyst.perl.org/repos/Catalyst/Catalyst-Manual/5.80/trunk/lib/Catalyst/Manual/Tutorial/>. |
cca5cd98 |
647 | |
ec3ef4ad |
648 | Copyright 2006-2010, Kennedy Clark, under the |
649 | Creative Commons Attribution Share-Alike License Version 3.0 |
4768184b |
650 | (L<http://creativecommons.org/licenses/by-sa/3.0/us/>). |