-
Notifications
You must be signed in to change notification settings - Fork 2
/
ch4tut10.lyx
1819 lines (1338 loc) · 25.5 KB
/
ch4tut10.lyx
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#LyX 2.0 created this file. For more info see http://www.lyx.org/
\lyxformat 413
\begin_document
\begin_header
\textclass hobo
\use_default_options true
\begin_modules
logicalmkup
\end_modules
\maintain_unincluded_children false
\language english
\language_package default
\inputencoding auto
\fontencoding global
\font_roman default
\font_sans default
\font_typewriter default
\font_default_family default
\use_non_tex_fonts false
\font_sc false
\font_osf false
\font_sf_scale 100
\font_tt_scale 100
\graphics default
\default_output_format default
\output_sync 0
\bibtex_command default
\index_command default
\float_placement H
\paperfontsize default
\spacing single
\use_hyperref true
\pdf_bookmarks true
\pdf_bookmarksnumbered false
\pdf_bookmarksopen false
\pdf_bookmarksopenlevel 1
\pdf_breaklinks false
\pdf_pdfborder false
\pdf_colorlinks true
\pdf_backref false
\pdf_pdfusetitle true
\papersize default
\use_geometry false
\use_amsmath 0
\use_esint 0
\use_mhchem 1
\use_mathdots 1
\cite_engine basic
\use_bibtopic false
\use_indices false
\paperorientation portrait
\suppress_date true
\use_refstyle 0
\boxbgcolor #e0e0e8
\index Index
\shortcut idx
\color #008000
\end_index
\secnumdepth -1
\tocdepth 2
\paragraph_separation skip
\defskip medskip
\quotes_language english
\papercolumns 1
\papersides 2
\paperpagestyle default
\tracking_changes false
\output_changes false
\html_math_output 0
\html_css_as_file 0
\html_be_strict false
\end_header
\begin_body
\begin_layout Section
Tutorial 10
\begin_inset Newline newline
\end_inset
DRYML I: A First Look at DRYML
\end_layout
\begin_layout Standard
You will be introduced to the concept of a user-defined tag, called a DRYML
tag
\begin_inset Index idx
status collapsed
\begin_layout Plain Layout
DRYML tag
\end_layout
\end_inset
.
The tutorial shows you how to make minor changes to the home page template
by defining DRYML tags.
You will also learn how to parameterize tags with the DRYML parameter attribute
,
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
param
\end_layout
\end_inset
.
\end_layout
\begin_layout Standard
\begin_inset Box Shaded
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Description
Note: Be sure not to confuse the DRYML
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
param
\begin_inset Index idx
status collapsed
\begin_layout Plain Layout
param
\end_layout
\end_inset
\end_layout
\end_inset
with the Rails
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
params
\begin_inset Index idx
status collapsed
\begin_layout Plain Layout
params
\end_layout
\end_inset
\end_layout
\end_inset
object.
\end_layout
\end_inset
\end_layout
\begin_layout Subsubsection
Topics
\end_layout
\begin_layout Itemize
Define a DRYML tag in the front/index.dryml template
\end_layout
\begin_layout Itemize
Call the DRYML tag in the front/index.dryml template
\end_layout
\begin_layout Itemize
Add a parameter to the DRYML tag
\end_layout
\begin_layout Itemize
Add an attribute to the DRYML tag
\end_layout
\begin_layout Itemize
Tutorial Application: four_table
\end_layout
\begin_layout Subsubsection
Steps
\end_layout
\begin_layout Standard
1.
\begin_inset Flex Strong
status collapsed
\begin_layout Plain Layout
Define a tag
\end_layout
\end_inset
.
Open up the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
views/front/index.dryml
\end_layout
\end_inset
file of the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
four_table
\end_layout
\end_inset
application.
This is Hobo’s home page.
\end_layout
\begin_layout Standard
At the top of the file enter the following code.
The
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<def>
\begin_inset Index idx
status collapsed
\begin_layout Plain Layout
Tags!<def>
\end_layout
\end_inset
\end_layout
\end_inset
tag below is Hobo’s DRYML tag for defining a custom tag.
The code below defines a
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<messages>
\end_layout
\end_inset
tag.
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Code
<def tag="messages">
\end_layout
\begin_layout Code
<br/><br/>
\end_layout
\begin_layout Code
<ul>
\end_layout
\begin_layout Code
<li >Message 1</li>
\end_layout
\begin_layout Code
<li >Message 2</li>
\end_layout
\begin_layout Code
<li >Message 3</li>
\end_layout
\begin_layout Code
</ul>
\end_layout
\begin_layout Code
</def>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
The entire markup between the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<def>
\end_layout
\end_inset
tags is standard
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
HTML
\end_layout
\end_inset
.
When called, this
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<messages>
\end_layout
\end_inset
tag will emit a three-line list.
\end_layout
\begin_layout Standard
2.
\begin_inset Flex Strong
status collapsed
\begin_layout Plain Layout
Call the tag
\end_layout
\end_inset
.
Go to the line that reads:
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Code
<h3>Congratulations! Your Hobo Rails App is up and
\end_layout
\begin_layout Code
running</h3>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
Add a line after this one so that it reads:
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Code
<h3>Congratulations! Your Hobo Rails App is up and
\end_layout
\begin_layout Code
running</h3>
\end_layout
\begin_layout Code
<messages/>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
\begin_inset Box Shaded
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Description
Note: The correct syntax is to place the forward slash after the tag name
when you use the tag as a single tag rather than in the form of an opening
and closing tag with no content in between.
\end_layout
\end_inset
\end_layout
\begin_layout Standard
\begin_inset Float figure
wide false
sideways false
status open
\begin_layout Plain Layout
\begin_inset Graphics
filename figures/figure126.png
width 90col%
\end_inset
\end_layout
\begin_layout Plain Layout
\begin_inset Caption
\begin_layout Plain Layout
The
\backslash
views
\backslash
front
\backslash
index.dryml file after the first modification
\end_layout
\end_inset
\end_layout
\end_inset
\end_layout
\begin_layout Standard
Then refresh your browser: To display the home page.
\end_layout
\begin_layout Standard
\begin_inset Float figure
wide false
sideways false
status open
\begin_layout Plain Layout
\begin_inset Graphics
filename figures/figure127.png
width 90col%
\end_inset
\end_layout
\begin_layout Plain Layout
\begin_inset Caption
\begin_layout Plain Layout
The Home page with the first set of custom messages
\end_layout
\end_inset
\end_layout
\begin_layout Plain Layout
\end_layout
\end_inset
\end_layout
\begin_layout Standard
One of the things that is different from Tutorial 1, is that you are now
working both with a DRYML tag definition and with a DRYML tag.
In the previous tutorial, you edited the tag definitions, but you did not
explicitly invoke a tag such as
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<index-page>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
Hobo took care of invoking the tags for you on-the-fly.
Since Hobo’s Rapid component knows what the basic structure of a data driven
web page is, it does not require you to explicitly code the template explicitly
except when you want something different than the Hobo default.
\end_layout
\begin_layout Standard
In this tutorial you will be defining new tags unknown to Hobo, so you of
course must explicitly invoke them.
\end_layout
\begin_layout Standard
3.
\begin_inset Flex Strong
status collapsed
\begin_layout Plain Layout
Parameterize the tag
\end_layout
\end_inset
.
\begin_inset Index idx
status open
\begin_layout Plain Layout
Tags!param attribute
\end_layout
\end_inset
Change the following code in the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<messages>
\end_layout
\end_inset
tag definition from:
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout LyX-Code
<li >Message 1</li>
\end_layout
\begin_layout LyX-Code
<li >Message 2</li>
\end_layout
\begin_layout LyX-Code
<li >Message 3</li>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
to:
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout LyX-Code
<li param="msg1">Message 1</li>
\end_layout
\begin_layout LyX-Code
<li param="msg2">Message 2</li>
\end_layout
\begin_layout LyX-Code
<li param="msg3">Message 3</li>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
You have now created three parameters, which can be invoked in the following
way:
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout LyX-Code
<msg1:>message text</msg1:>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<msg1:>
\end_layout
\end_inset
is called a
\begin_inset Flex Emph
status collapsed
\begin_layout Plain Layout
parameter tag
\begin_inset Index idx
status collapsed
\begin_layout Plain Layout
parameter tag
\end_layout
\end_inset
\end_layout
\end_inset
.
\end_layout
\begin_layout Standard
\begin_inset Box Shaded
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Description
Note: The colon (:) suffix indicates that the tag is a defined parameter
tag.
Later you will learn that some parameter tags are defined for you in the
Rapid library.
\end_layout
\end_inset
\end_layout
\begin_layout Standard
4.
\begin_inset Flex Strong
status collapsed
\begin_layout Plain Layout
Use a parameter
\end_layout
\end_inset
.
Let’s invoke the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<messages>
\end_layout
\end_inset
tag, but change the third message by addressing the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<msg3:>
\end_layout
\end_inset
parameter tag.
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Code
<h3>Congratulations! Your Hobo Rails App is up and
\end_layout
\begin_layout Code
running</h3>
\end_layout
\begin_layout Code
<messages>
\end_layout
\begin_layout Code
<msg3:>This is the third message passed as a
\end_layout
\begin_layout Code
parameter.</msg3>
\end_layout
\begin_layout Code
</messages>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
The first two lines will remain the same while the third changes due to
the use of the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<msg3:>
\end_layout
\end_inset
parameter tag.
You have used a tag to pass data from the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<msg3:>
\end_layout
\end_inset
parameter tag into the
\begin_inset Flex Code
status collapsed
\begin_layout Plain Layout
<messages>
\end_layout
\end_inset
tag.
\end_layout
\begin_layout Standard
\begin_inset Float figure
wide false
sideways false
status open
\begin_layout Plain Layout
\begin_inset Graphics
filename figures/figure128.png
width 90col%
\end_inset
\end_layout
\begin_layout Plain Layout
\begin_inset Caption
\begin_layout Plain Layout
How the passed parameter displays on the page
\end_layout
\end_inset
\end_layout
\end_inset
\end_layout
\begin_layout Standard
5.
\begin_inset Flex Strong
status collapsed
\begin_layout Plain Layout
Use some more parameters
\end_layout
\end_inset
.
Change the other two message lines likewise to:
\end_layout
\begin_layout Standard
\begin_inset Box Shadowbox
position "t"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 0
use_makebox 0
width "100col%"
special "none"
height "1in"
height_special "totalheight"
status open
\begin_layout Code
<messages>
\end_layout
\begin_layout Code
<msg1:>This is the first message called as a
\end_layout
\begin_layout Code
parameter</msg1>
\end_layout
\begin_layout Code
<msg2:>This is the second message called as a
\end_layout
\begin_layout Code
parameter.</msg2>
\end_layout
\begin_layout Code
<msg3:>This is the third message called as a
\end_layout
\begin_layout Code
parameter.</msg3>
\end_layout
\begin_layout Code
</messages>
\end_layout
\end_inset
\end_layout
\begin_layout Standard
and you should see:
\end_layout
\begin_layout Standard
\begin_inset Float figure
wide false
sideways false
status open
\begin_layout Plain Layout
\begin_inset Graphics
filename figures/figure129.png
width 90col%
\end_inset
\end_layout
\begin_layout Plain Layout
\begin_inset Caption
\begin_layout Plain Layout