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How to fill form radio fields

See original GitHub issue

Can pdf-lib be used to programmatically fill out radio fields in a template PDF? Analog to #48

PDF source looks like:

...
148 0 obj
<</BC[]/BG[0.952896 0.952896 0.952896]>>
endobj
149 0 obj
<</Count 0/Type/Outlines>>
endobj
150 0 obj
[214 0 R 171 0 R 184 0 R 202 0 R 176 0 R 186 0 R 180 0 R 192 0 R 188 0 R 178 0 R 196 0 R 198 0 R 200 0 R 194 0 R 190 0 R 182 0 R 151 0 R 152 0 R 153 0 R 18 0 R 70 0 R 19 0 R 24 0 R 79 0 R 71 0 R 17 0 R 75 0 R 68 0 R 67 0 R 59 0 R 74 0 R 37 0 R 86 0 R 38 0 R 90 0 R 94 0 R 88 0 R 40 0 R 89 0 R 30 0 R 28 0 R 34 0 R 26 0 R 105 0 R 113 0 R 99 0 R 127 0 R 104 0 R 142 0 R 98 0 R 143 0 R 115 0 R 110 0 R 147 0 R 117 0 R 141 0 R 130 0 R 103 0 R]
endobj
151 0 obj
<</FT/Btn/Ff 49152/Kids[211 0 R]/Opt 156 0 R/T(Radio 1)>>
endobj
152 0 obj
<</FT/Btn/Ff 49152/Kids[208 0 R]/Opt 155 0 R/T(Radio 2)>>
endobj
153 0 obj
<</FT/Btn/Ff 49152/Kids[204 0 R]/Opt 154 0 R/T(Radio 3)>>
endobj
154 0 obj
[(Choice1)]
endobj
155 0 obj
[(Choice1)]
endobj
156 0 obj
[(Choice1)]
endobj
157 0 obj
...

Issue Analytics

State:
Created 4 years ago
Comments:8 (5 by maintainers)

Top GitHub Comments

2reactions

Hopdingcommented, Sep 16, 2020

pdf-lib now has form creation and filling APIs that should be used instead of the above example(s). See the form filling JSFiddle for a working example. Additional information is available in the README and API docs. The PDFRadioGroup.select method is of particular relevance to this issue.

0reactions

Hopdingcommented, Dec 28, 2019

@astanet Thanks for updating the example!

I agree that it’s rather difficult to understand the structure of PDF files. I still don’t understand everything about them, and I’ve been working on pdf-lib for a little over 2 years now! (see the first commit)

If you want to better understand the structure of PDF files, I’d advise reading through some key sections of the PDF specification. There really is no substitute for it. There is also a book by a fellow named John Whitington that might be useful, though I haven’t read it myself.