Pass regex flags to route in Phalcon micro app

Question

I'm trying to define a route in a Phalcon Micro App, but can't figure out how to pass the global flag to the regular expression. Here is my route

/api/v1/product/detail/{sku:([\w\d]+-?)*[\w\d]*}

Expecting both of these to match, however the later requires the global modifier to match.

8Z-WEXN-CG0H
025-3bags

How can I specify a flag in the regular expression? I did not see this specified in the documentation.

Yes, notice it requires the global flag - hence my question... I'm trying to solve it with a regex that doesn't need the global flag now. — quickshiftin, Feb 02 '18 at 14:52
In addition I'd say `\w` includes `\d` as part of match and you'd better go with `\w+(-\w+)*` — revo, Feb 02 '18 at 14:52
No, `g` is set because of multiple matches in separate lines. You only need one match at a time. Unset `g` and see the result. — revo, Feb 02 '18 at 14:53
Your route definition handles one URL at a time. So you don't need `g`. — revo, Feb 02 '18 at 14:55
However both are a match without global modifier if and only if you have one input value at a time. — revo, Feb 02 '18 at 14:56
OIC - I'd thought the test strings were treated individually in that tool! — quickshiftin, Feb 02 '18 at 15:01

revo · Accepted Answer · 2018-02-02T15:32:24.050

3

Global modifier is set whenever you don't want to stop at first match and since you have one matching value at a time you don't need g modifier either.

Let's go with an example. Suppose your current input string is this:

/api/v1/product/detail/8Z-WEXN-CG0H
/api/v1/product/detail/025-3bags

Then your regex stops at first match since no g's applied but if your input string is one of these at a time:

/api/v1/product/detail/8Z-WEXN-CG0H

/api/v1/product/detail/025-3bags

It works so you don't need g at all. And I'd suggest you to modify your regex into this simplified:

\w+(?:-\w+)*

As \w includes \d as part of a match.

edited Feb 02 '18 at 15:32

answered Feb 02 '18 at 15:02

revo

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Thank you sir - here is the final regex that got it working in phalcon `((\w+(?:-\w+)*)`. I had to use a non-capturing group on the inner group. Does that look legit to you? Seems to be working as I test in my app... – quickshiftin Feb 02 '18 at 15:06
I don't see a reason for outer grouping but if that works, there you go. – revo Feb 02 '18 at 15:08

Pass regex flags to route in Phalcon micro app

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