Commit | Line | Data |
b8a92065 |
1 | package stemmaweb::Controller::Root; |
2 | use Moose; |
3 | use namespace::autoclean; |
c2b80bba |
4 | use JSON qw (); |
db234220 |
5 | use LWP::UserAgent; |
41279a86 |
6 | use TryCatch; |
16143416 |
7 | use XML::LibXML; |
8 | use XML::LibXML::XPathContext; |
b8a92065 |
9 | |
10 | |
11 | BEGIN { extends 'Catalyst::Controller' } |
12 | |
13 | # |
14 | # Sets the actions in this controller to be registered with no prefix |
15 | # so they function identically to actions created in MyApp.pm |
16 | # |
17 | __PACKAGE__->config(namespace => ''); |
18 | |
db234220 |
19 | my $STEMWEB_BASE_URL = 'http://slinkola.users.cs.helsinki.fi'; |
20 | |
b8a92065 |
21 | =head1 NAME |
22 | |
23 | stemmaweb::Controller::Root - Root Controller for stemmaweb |
24 | |
25 | =head1 DESCRIPTION |
26 | |
27 | Serves up the main container pages. |
28 | |
29 | =head1 URLs |
30 | |
31 | =head2 index |
32 | |
33 | The root page (/). Serves the main container page, from which the various |
34 | components will be loaded. |
35 | |
36 | =cut |
37 | |
38 | sub index :Path :Args(0) { |
39 | my ( $self, $c ) = @_; |
40 | |
c655153c |
41 | # Are we being asked to load a text immediately? If so |
42 | if( $c->req->param('withtradition') ) { |
43 | $c->stash->{'withtradition'} = $c->req->param('withtradition'); |
44 | } |
db234220 |
45 | # Get the current list of Stemweb algorithms |
46 | my $ua = LWP::UserAgent->new(); |
47 | my $resp = $ua->get( $STEMWEB_BASE_URL . '/algorithms/available' ); |
48 | if( $resp->is_success ) { |
49 | $c->stash->{'stemweb_algorithms'} = $resp->content; |
50 | } else { |
51 | $c->stash->{'stemweb_algorithms'} = '{}'; |
52 | } |
b8a92065 |
53 | $c->stash->{template} = 'index.tt'; |
54 | } |
55 | |
3f9d7ae5 |
56 | =head2 about |
57 | |
58 | A general overview/documentation page for the site. |
59 | |
60 | =cut |
61 | |
62 | sub about :Local :Args(0) { |
63 | my( $self, $c ) = @_; |
64 | $c->stash->{template} = 'about.tt'; |
65 | } |
66 | |
4a6b658f |
67 | =head2 help/* |
68 | |
69 | A dispatcher for documentation of various aspects of the application. |
70 | |
71 | =cut |
72 | |
73 | sub help :Local :Args(1) { |
74 | my( $self, $c, $topic ) = @_; |
75 | $c->stash->{template} = "$topic.tt"; |
76 | } |
77 | |
b8a92065 |
78 | =head1 Elements of index page |
79 | |
80 | =head2 directory |
81 | |
82 | GET /directory |
83 | |
70ccaf75 |
84 | Serves a snippet of HTML that lists the available texts. This returns texts belonging to the logged-in user if any, otherwise it returns all public texts. |
b8a92065 |
85 | |
86 | =cut |
70ccaf75 |
87 | |
b8a92065 |
88 | sub directory :Local :Args(0) { |
89 | my( $self, $c ) = @_; |
90 | my $m = $c->model('Directory'); |
69799996 |
91 | # Is someone logged in? |
98a45925 |
92 | my %usertexts; |
69799996 |
93 | if( $c->user_exists ) { |
94 | my $user = $c->user->get_object; |
98a45925 |
95 | my @list = $m->traditionlist( $user ); |
96 | map { $usertexts{$_->{id}} = 1 } @list; |
97 | $c->stash->{usertexts} = \@list; |
69799996 |
98 | $c->stash->{is_admin} = 1 if $user->is_admin; |
99 | } |
98a45925 |
100 | # List public (i.e. readonly) texts separately from any user (i.e. |
101 | # full access) texts that exist. Admin users therefore have nothing |
102 | # in this list. |
103 | my @plist = grep { !$usertexts{$_->{id}} } $m->traditionlist('public'); |
104 | $c->stash->{publictexts} = \@plist; |
b8a92065 |
105 | $c->stash->{template} = 'directory.tt'; |
106 | } |
107 | |
75354c3a |
108 | =head1 AJAX methods for traditions and their properties |
fb6e49b3 |
109 | |
75354c3a |
110 | =head2 newtradition |
111 | |
112 | POST /newtradition, |
113 | { name: <name>, |
114 | language: <language>, |
115 | public: <is_public>, |
2ece58b3 |
116 | file: <fileupload> } |
fb6e49b3 |
117 | |
75354c3a |
118 | Creates a new tradition belonging to the logged-in user, with the given name |
119 | and the collation given in the uploaded file. The file type is indicated via |
120 | the filename extension (.csv, .txt, .xls, .xlsx, .xml). Returns the ID and |
121 | name of the new tradition. |
122 | |
123 | =cut |
124 | |
125 | sub newtradition :Local :Args(0) { |
126 | my( $self, $c ) = @_; |
127 | return _json_error( $c, 403, 'Cannot save a tradition without being logged in' ) |
128 | unless $c->user_exists; |
129 | |
130 | my $user = $c->user->get_object; |
131 | # Grab the file upload, check its name/extension, and call the |
132 | # appropriate parser(s). |
2ece58b3 |
133 | my $upload = $c->request->upload('file'); |
75354c3a |
134 | my $name = $c->request->param('name') || 'Uploaded tradition'; |
135 | my $lang = $c->request->param( 'language' ) || 'Default'; |
136 | my $public = $c->request->param( 'public' ) ? 1 : undef; |
2ece58b3 |
137 | my( $ext ) = $upload->filename =~ /\.(\w+)$/; |
75354c3a |
138 | my %newopts = ( |
139 | 'name' => $name, |
140 | 'language' => $lang, |
141 | 'public' => $public, |
2ece58b3 |
142 | 'file' => $upload->tempname |
75354c3a |
143 | ); |
144 | |
145 | my $tradition; |
146 | my $errmsg; |
147 | if( $ext eq 'xml' ) { |
16143416 |
148 | my $type; |
149 | # Parse the XML to see which flavor it is. |
150 | my $parser = XML::LibXML->new(); |
151 | my $doc; |
152 | try { |
153 | $doc = $parser->parse_file( $newopts{'file'} ); |
154 | } catch( $err ) { |
155 | $errmsg = "XML file parsing error: $err"; |
156 | } |
157 | if( $doc ) { |
158 | if( $doc->documentElement->nodeName eq 'GraphML' ) { |
159 | $type = 'CollateX'; |
160 | } elsif( $doc->documentElement->nodeName ne 'TEI' ) { |
161 | $errmsg = 'Unrecognized XML type ' . $doc->documentElement->nodeName; |
162 | } else { |
163 | my $xpc = XML::LibXML::XPathContext->new( $doc->documentElement ); |
164 | my $venc = $xpc->findvalue( '/TEI/teiHeader/encodingDesc/variantEncoding/attribute::method' ); |
165 | if( $venc && $venc eq 'double-end-point' ) { |
166 | $type = 'CTE'; |
167 | } else { |
168 | $type = 'TEI'; |
169 | } |
170 | } |
171 | } |
172 | # Try the relevant XML parsing option. |
173 | if( $type ) { |
174 | delete $newopts{'file'}; |
175 | $newopts{'xmlobj'} = $doc; |
75354c3a |
176 | try { |
177 | $tradition = Text::Tradition->new( %newopts, 'input' => $type ); |
178 | } catch ( Text::Tradition::Error $e ) { |
179 | $errmsg = $e->message; |
16143416 |
180 | } catch ( $e ) { |
181 | $errmsg = "Unexpected parsing error: $e"; |
699ab7ea |
182 | } |
75354c3a |
183 | } |
184 | } elsif( $ext =~ /^(txt|csv|xls(x)?)$/ ) { |
185 | # If it's Excel we need to pass excel => $ext; |
186 | # otherwise we need to pass sep_char => [record separator]. |
187 | if( $ext =~ /xls/ ) { |
188 | $newopts{'excel'} = $ext; |
189 | } else { |
190 | $newopts{'sep_char'} = $ext eq 'txt' ? "\t" : ','; |
191 | } |
192 | try { |
193 | $tradition = Text::Tradition->new( |
194 | %newopts, |
195 | 'input' => 'Tabular', |
196 | ); |
197 | } catch ( Text::Tradition::Error $e ) { |
198 | $errmsg = $e->message; |
16143416 |
199 | } catch ( $e ) { |
200 | $errmsg = "Unexpected parsing error: $e"; |
75354c3a |
201 | } |
202 | } else { |
203 | # Error unless we have a recognized filename extension |
2bfac197 |
204 | return _json_error( $c, 403, "Unrecognized file type extension $ext" ); |
75354c3a |
205 | } |
206 | |
207 | # Save the tradition if we have it, and return its data or else the |
208 | # error that occurred trying to make it. |
209 | if( $errmsg ) { |
210 | return _json_error( $c, 500, "Error parsing tradition .$ext file: $errmsg" ); |
211 | } elsif( !$tradition ) { |
212 | return _json_error( $c, 500, "No error caught but tradition not created" ); |
213 | } |
214 | |
215 | my $m = $c->model('Directory'); |
216 | $user->add_tradition( $tradition ); |
217 | my $id = $c->model('Directory')->store( $tradition ); |
218 | $c->model('Directory')->store( $user ); |
219 | $c->stash->{'result'} = { 'id' => $id, 'name' => $tradition->name }; |
220 | $c->forward('View::JSON'); |
221 | } |
222 | |
223 | =head2 textinfo |
224 | |
225 | GET /textinfo/$textid |
226 | POST /textinfo/$textid, |
227 | { name: $new_name, |
228 | language: $new_language, |
229 | public: $is_public, |
230 | owner: $new_userid } # only admin users can update the owner |
231 | |
232 | Returns information about a particular text. |
fb6e49b3 |
233 | |
234 | =cut |
235 | |
75354c3a |
236 | sub textinfo :Local :Args(1) { |
fb6e49b3 |
237 | my( $self, $c, $textid ) = @_; |
98a45925 |
238 | my $tradition = $c->model('Directory')->tradition( $textid ); |
6978962f |
239 | ## Have to keep users in the same scope as tradition |
240 | my $newuser; |
241 | my $olduser; |
75354c3a |
242 | unless( $tradition ) { |
2bfac197 |
243 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
244 | } |
41279a86 |
245 | my $ok = _check_permission( $c, $tradition ); |
246 | return unless $ok; |
75354c3a |
247 | if( $c->req->method eq 'POST' ) { |
248 | return _json_error( $c, 403, |
249 | 'You do not have permission to update this tradition' ) |
250 | unless $ok eq 'full'; |
251 | my $params = $c->request->parameters; |
252 | # Handle changes to owner-accessible parameters |
253 | my $m = $c->model('Directory'); |
254 | my $changed; |
ce1c5863 |
255 | # Handle name param - easy |
256 | if( exists $params->{name} ) { |
257 | my $newname = delete $params->{name}; |
258 | unless( $tradition->name eq $newname ) { |
259 | try { |
260 | $tradition->name( $newname ); |
75354c3a |
261 | $changed = 1; |
ce1c5863 |
262 | } catch { |
263 | return _json_error( $c, 500, "Error setting name to $newname" ); |
75354c3a |
264 | } |
265 | } |
266 | } |
ce1c5863 |
267 | # Handle language param, making Default => null |
268 | my $langval = delete $params->{language} || 'Default'; |
ed2aaedb |
269 | |
270 | unless( $tradition->language eq $langval || !$tradition->can('language') ) { |
ce1c5863 |
271 | try { |
272 | $tradition->language( $langval ); |
273 | $changed = 1; |
274 | } catch { |
275 | return _json_error( $c, 500, "Error setting language to $langval" ); |
276 | } |
277 | } |
278 | |
75354c3a |
279 | # Handle our boolean |
ce1c5863 |
280 | my $ispublic = $tradition->public; |
75354c3a |
281 | if( delete $params->{'public'} ) { # if it's any true value... |
282 | $tradition->public( 1 ); |
ce1c5863 |
283 | $changed = 1 unless $ispublic; |
284 | } else { # the checkbox was unchecked, ergo it should not be public |
285 | $tradition->public( 0 ); |
286 | $changed = 1 if $ispublic; |
75354c3a |
287 | } |
ce1c5863 |
288 | |
289 | # Handle ownership change |
75354c3a |
290 | if( exists $params->{'owner'} ) { |
291 | # Only admins can update user / owner |
292 | my $newownerid = delete $params->{'owner'}; |
16a7dd1f |
293 | if( $tradition->has_user && !$tradition->user ) { |
294 | $tradition->clear_user; |
295 | } |
4f849eea |
296 | unless( !$newownerid || |
6978962f |
297 | ( $tradition->has_user && $tradition->user->email eq $newownerid ) ) { |
75354c3a |
298 | unless( $c->user->get_object->is_admin ) { |
299 | return _json_error( $c, 403, |
300 | "Only admin users can change tradition ownership" ); |
301 | } |
6978962f |
302 | $newuser = $m->find_user({ email => $newownerid }); |
75354c3a |
303 | unless( $newuser ) { |
ce1c5863 |
304 | return _json_error( $c, 500, "No such user " . $newownerid ); |
75354c3a |
305 | } |
6978962f |
306 | if( $tradition->has_user ) { |
307 | $olduser = $tradition->user; |
308 | $olduser->remove_tradition( $tradition ); |
309 | } |
75354c3a |
310 | $newuser->add_tradition( $tradition ); |
311 | $changed = 1; |
312 | } |
313 | } |
314 | # TODO check for rogue parameters |
315 | if( scalar keys %$params ) { |
316 | my $rogueparams = join( ', ', keys %$params ); |
317 | return _json_error( $c, 403, "Request parameters $rogueparams not recognized" ); |
318 | } |
319 | # If we safely got to the end, then write to the database. |
320 | $m->save( $tradition ) if $changed; |
321 | $m->save( $newuser ) if $newuser; |
322 | } |
41279a86 |
323 | |
75354c3a |
324 | # Now return the current textinfo, whether GET or successful POST. |
325 | my $textinfo = { |
326 | textid => $textid, |
327 | name => $tradition->name, |
e0b90236 |
328 | public => $tradition->public || 0, |
2ece58b3 |
329 | owner => $tradition->user ? $tradition->user->email : undef, |
75354c3a |
330 | witnesses => [ map { $_->sigil } $tradition->witnesses ], |
331 | }; |
ed2aaedb |
332 | if( $tradition->can('language') ) { |
333 | $textinfo->{'language'} = $tradition->language; |
334 | } |
c2b80bba |
335 | if( $tradition->can('stemweb_jobid') ) { |
336 | $textinfo->{'stemweb_jobid'} = $tradition->stemweb_jobid || 0; |
337 | } |
63378fe0 |
338 | my @stemmasvg = map { { |
339 | name => $_->identifier, |
340 | directed => _json_bool( !$_->is_undirected ), |
341 | svg => $_->as_svg() } } |
ec2f89ff |
342 | $tradition->stemmata; |
75354c3a |
343 | map { $_ =~ s/\n/ /mg } @stemmasvg; |
344 | $textinfo->{stemmata} = \@stemmasvg; |
345 | $c->stash->{'result'} = $textinfo; |
346 | $c->forward('View::JSON'); |
fb6e49b3 |
347 | } |
b8a92065 |
348 | |
75354c3a |
349 | =head2 variantgraph |
b8a92065 |
350 | |
75354c3a |
351 | GET /variantgraph/$textid |
352 | |
353 | Returns the variant graph for the text specified at $textid, in SVG form. |
b8a92065 |
354 | |
355 | =cut |
356 | |
75354c3a |
357 | sub variantgraph :Local :Args(1) { |
b8a92065 |
358 | my( $self, $c, $textid ) = @_; |
98a45925 |
359 | my $tradition = $c->model('Directory')->tradition( $textid ); |
75354c3a |
360 | unless( $tradition ) { |
2bfac197 |
361 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
362 | } |
41279a86 |
363 | my $ok = _check_permission( $c, $tradition ); |
364 | return unless $ok; |
365 | |
98a45925 |
366 | my $collation = $tradition->collation; |
75354c3a |
367 | $c->stash->{'result'} = $collation->as_svg; |
368 | $c->forward('View::SVG'); |
b8a92065 |
369 | } |
75354c3a |
370 | |
b8a92065 |
371 | =head2 stemma |
372 | |
75354c3a |
373 | GET /stemma/$textid/$stemmaseq |
374 | POST /stemma/$textid/$stemmaseq, { 'dot' => $dot_string } |
b8a92065 |
375 | |
75354c3a |
376 | Returns an SVG representation of the given stemma hypothesis for the text. |
377 | If the URL is called with POST, the stemma at $stemmaseq will be altered |
378 | to reflect the definition in $dot_string. If $stemmaseq is 'n', a new |
379 | stemma will be added. |
b8a92065 |
380 | |
381 | =cut |
382 | |
75354c3a |
383 | sub stemma :Local :Args(2) { |
41279a86 |
384 | my( $self, $c, $textid, $stemmaid ) = @_; |
b8a92065 |
385 | my $m = $c->model('Directory'); |
386 | my $tradition = $m->tradition( $textid ); |
75354c3a |
387 | unless( $tradition ) { |
2bfac197 |
388 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
389 | } |
41279a86 |
390 | my $ok = _check_permission( $c, $tradition ); |
391 | return unless $ok; |
392 | |
41279a86 |
393 | $c->stash->{'result'} = ''; |
75354c3a |
394 | my $stemma; |
395 | if( $c->req->method eq 'POST' ) { |
396 | if( $ok eq 'full' ) { |
41279a86 |
397 | my $dot = $c->request->body_params->{'dot'}; |
174e78df |
398 | # Graph::Reader::Dot does not handle bare unicode. We get around this |
4770d077 |
399 | # by wrapping all words in double quotes, as long as they aren't already |
be536c89 |
400 | # wrapped, and as long as they aren't the initial '(di)?graph .*'. |
4770d077 |
401 | # Horrible HACK. |
be536c89 |
402 | my @dlines = split( "\n", $dot ); |
403 | my $wdot = ''; |
404 | foreach( @dlines ) { |
405 | unless( /^(di)?graph/ ) { # Skip the first line |
406 | s/(?<!")\b(\w+)\b(?!")/"$1"/g; |
407 | } |
408 | $wdot .= "$_\n"; |
409 | } |
410 | # $dot =~ s/(?<!")\b(?!(?:digraph|stemma)\b)(\w+)\b(?!")/"$1"/g; |
411 | $dot = $wdot; |
412 | print STDERR "$dot\n"; |
75354c3a |
413 | try { |
414 | if( $stemmaid eq 'n' ) { |
415 | # We are adding a new stemma. |
3f7346b1 |
416 | $stemmaid = $tradition->stemma_count; |
75354c3a |
417 | $stemma = $tradition->add_stemma( 'dot' => $dot ); |
2bfac197 |
418 | } elsif( $stemmaid !~ /^\d+$/ ) { |
419 | return _json_error( $c, 403, "Invalid stemma ID specification $stemmaid" ); |
75354c3a |
420 | } elsif( $stemmaid < $tradition->stemma_count ) { |
421 | # We are updating an existing stemma. |
422 | $stemma = $tradition->stemma( $stemmaid ); |
423 | $stemma->alter_graph( $dot ); |
424 | } else { |
425 | # Unrecognized stemma ID |
2bfac197 |
426 | return _json_error( $c, 404, "No stemma at index $stemmaid, cannot update" ); |
75354c3a |
427 | } |
428 | } catch ( Text::Tradition::Error $e ) { |
429 | return _json_error( $c, 500, $e->message ); |
430 | } |
41279a86 |
431 | $m->store( $tradition ); |
75354c3a |
432 | } else { |
433 | # No permissions to update the stemma |
434 | return _json_error( $c, 403, |
435 | 'You do not have permission to update stemmata for this tradition' ); |
41279a86 |
436 | } |
b8a92065 |
437 | } |
75354c3a |
438 | |
439 | # For a GET or a successful POST request, return the SVG representation |
440 | # of the stemma in question, if any. |
75354c3a |
441 | if( !$stemma && $tradition->stemma_count > $stemmaid ) { |
442 | $stemma = $tradition->stemma( $stemmaid ); |
443 | } |
2923ebb1 |
444 | my $stemma_xml = $stemma ? $stemma->as_svg() : ''; |
ce1c5863 |
445 | # What was requested, XML or JSON? |
446 | my $return_view = 'SVG'; |
447 | if( my $accept_header = $c->req->header('Accept') ) { |
448 | $c->log->debug( "Received Accept header: $accept_header" ); |
449 | foreach my $type ( split( /,\s*/, $accept_header ) ) { |
450 | # If we were first asked for XML, return SVG |
451 | last if $type =~ /^(application|text)\/xml$/; |
452 | # If we were first asked for JSON, return JSON |
453 | if( $type eq 'application/json' ) { |
454 | $return_view = 'JSON'; |
455 | last; |
456 | } |
457 | } |
458 | } |
459 | if( $return_view eq 'SVG' ) { |
460 | $c->stash->{'result'} = $stemma_xml; |
461 | $c->forward('View::SVG'); |
462 | } else { # JSON |
463 | $stemma_xml =~ s/\n/ /mg; |
be536c89 |
464 | $c->stash->{'result'} = { |
465 | 'stemmaid' => $stemmaid, |
466 | 'name' => $stemma->identifier, |
63378fe0 |
467 | 'directed' => _json_bool( !$stemma->is_undirected ), |
be536c89 |
468 | 'svg' => $stemma_xml }; |
ce1c5863 |
469 | $c->forward('View::JSON'); |
470 | } |
b8a92065 |
471 | } |
472 | |
473 | =head2 stemmadot |
474 | |
75354c3a |
475 | GET /stemmadot/$textid/$stemmaseq |
b8a92065 |
476 | |
477 | Returns the 'dot' format representation of the current stemma hypothesis. |
478 | |
479 | =cut |
480 | |
75354c3a |
481 | sub stemmadot :Local :Args(2) { |
482 | my( $self, $c, $textid, $stemmaid ) = @_; |
b8a92065 |
483 | my $m = $c->model('Directory'); |
484 | my $tradition = $m->tradition( $textid ); |
75354c3a |
485 | unless( $tradition ) { |
2bfac197 |
486 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
487 | } |
41279a86 |
488 | my $ok = _check_permission( $c, $tradition ); |
489 | return unless $ok; |
75354c3a |
490 | my $stemma = $tradition->stemma( $stemmaid ); |
491 | unless( $stemma ) { |
2bfac197 |
492 | return _json_error( $c, 404, "Tradition $textid has no stemma ID $stemmaid" ); |
75354c3a |
493 | } |
494 | # Get the dot and transmute its line breaks to literal '|n' |
495 | $c->stash->{'result'} = { 'dot' => $stemma->editable( { linesep => '|n' } ) }; |
41279a86 |
496 | $c->forward('View::JSON'); |
497 | } |
498 | |
38627d20 |
499 | =head2 download |
500 | |
501 | GET /download/$textid |
502 | |
503 | Returns the full XML definition of the tradition and its stemmata, if any. |
504 | |
505 | =cut |
506 | |
507 | sub download :Local :Args(1) { |
508 | my( $self, $c, $textid ) = @_; |
509 | my $tradition = $c->model('Directory')->tradition( $textid ); |
510 | unless( $tradition ) { |
511 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
512 | } |
513 | my $ok = _check_permission( $c, $tradition ); |
514 | return unless $ok; |
515 | try { |
516 | $c->stash->{'result'} = $tradition->collation->as_graphml(); |
517 | } catch( Text::Tradition::Error $e ) { |
518 | return _json_error( $c, 500, $e->message ); |
519 | } |
520 | $c->forward('View::GraphML'); |
521 | } |
522 | |
75354c3a |
523 | #################### |
524 | ### Helper functions |
525 | #################### |
41279a86 |
526 | |
75354c3a |
527 | # Helper to check what permission, if any, the active user has for |
528 | # the given tradition |
41279a86 |
529 | sub _check_permission { |
530 | my( $c, $tradition ) = @_; |
531 | my $user = $c->user_exists ? $c->user->get_object : undef; |
532 | if( $user ) { |
929ba7c8 |
533 | return 'full' if ( $user->is_admin || |
534 | ( $tradition->has_user && $tradition->user->id eq $user->id ) ); |
080f8a02 |
535 | } |
536 | # Text doesn't belong to us, so maybe it's public? |
537 | return 'readonly' if $tradition->public; |
538 | |
539 | # ...nope. Forbidden! |
75354c3a |
540 | return _json_error( $c, 403, 'You do not have permission to view this tradition.' ); |
541 | } |
542 | |
543 | # Helper to throw a JSON exception |
544 | sub _json_error { |
545 | my( $c, $code, $errmsg ) = @_; |
546 | $c->response->status( $code ); |
547 | $c->stash->{'result'} = { 'error' => $errmsg }; |
548 | $c->forward('View::JSON'); |
929ba7c8 |
549 | return 0; |
41279a86 |
550 | } |
551 | |
63378fe0 |
552 | sub _json_bool { |
553 | return $_[0] ? JSON::true : JSON::false; |
554 | } |
555 | |
b8a92065 |
556 | =head2 default |
557 | |
558 | Standard 404 error page |
559 | |
560 | =cut |
561 | |
562 | sub default :Path { |
563 | my ( $self, $c ) = @_; |
564 | $c->response->body( 'Page not found' ); |
565 | $c->response->status(404); |
566 | } |
567 | |
568 | =head2 end |
569 | |
570 | Attempt to render a view, if needed. |
571 | |
572 | =cut |
573 | |
574 | sub end : ActionClass('RenderView') {} |
575 | |
576 | =head1 AUTHOR |
577 | |
578 | Tara L Andrews |
579 | |
580 | =head1 LICENSE |
581 | |
582 | This library is free software. You can redistribute it and/or modify |
583 | it under the same terms as Perl itself. |
584 | |
585 | =cut |
586 | |
587 | __PACKAGE__->meta->make_immutable; |
588 | |
589 | 1; |