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Smarty
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wo
Smarty n00b
Joined: 17 Nov 2007
Posts: 3
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 Posted: Sat Nov 17, 2007 11:38 pm Post subject: Assignment operator |
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I wish there was an assignment operator:
| Code: | | {variable := custom_plugin_call(arg1=value1, arg2=value2 ...)} |
I find this prettier than :
| Code: | | {capture assign=variable}{custom_plugin_call arg1=value1 arg2=value2 ...}{/capture} |
Custom instrumentation of plugin could allow this:
| Code: | | {custom_plugin_call assign=variable arg1=value1 arg2=value2} |
but it's not much better
I don't intend to wait on that feature to be implemented. It can be easily emulated using a prefilter. Implementation of such a prefilter is left as an exercise for the writer, and the reader if she's interested. |
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boots
Administrator
Joined: 16 Apr 2003
Posts: 5611
Location: Toronto, Canada
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| Posted: Wed Nov 28, 2007 9:02 pm Post subject: |
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{custom_plugin_call assign=variable arg1=value1 arg2=value2} is the usual -- meaning that the assignment capability is left as an implementation detail of the plugin. You can create a custom modifier to do similar (though it will probably need to be manually registered and perhaps live as a method on your extended Smarty class so that it can get a reference to the current smarty instance).
With such a beast you could then do something like:
{custom_plugin_call|assign:variable arg1=value1 arg2=value2} |
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wo
Smarty n00b
Joined: 17 Nov 2007
Posts: 3
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| Posted: Mon Dec 03, 2007 11:02 am Post subject: |
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| Quote: | | the assignment capability is left as an implementation detail of the plugin |
Don't you thing that such a facility should be addressed in a standard manner by Smarty ? This wouldn't prevent developpers from addressing custom assignments needs using the then-standardized "assign" parameter.
I'm still dubious about how to properly implement such a nice syntax bonus (perhaps in the form of a compiler plugin) without hacking Smarty/Smarty_Compiler internals.
Perhaps someone have an idea about a nice, easy to use, relatively easy to implement, way of providing assignment to template authors. |
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mohrt
Administrator
Joined: 16 Apr 2003
Posts: 7368
Location: Lincoln Nebraska, USA
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| Posted: Mon Dec 03, 2007 2:29 pm Post subject: |
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| Quote: | | Don't you thing that such a facility should be addressed in a standard manner by Smarty |
Actually no. Ideally, the template designer shouldn't be assigning anything to template vars, they should just use what is given to them. Even {assign} can be a borderline case. Any time variable assignment happens in templates, you start to cross the line of the application/presentation separation.
Custom plugins can handle their own assignments, and that is a good thing. |
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wo
Smarty n00b
Joined: 17 Nov 2007
Posts: 3
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| Posted: Mon Dec 03, 2007 4:40 pm Post subject: |
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[quote]Ideally, the template designer shouldn't be assigning anything to template vars, they should just use what is given to them.[/b]
Sure. Perhaps another scope for template assigned variables would solve the problem. That way, template assigned variables couldn't erase regular template variables. More, template assigned variables couldn't be accessed using get_template_vars(), which would help keep the application/presentation separation (preventing presentation data to reenter the application somehow). |
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mohrt
Administrator
Joined: 16 Apr 2003
Posts: 7368
Location: Lincoln Nebraska, USA
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| Posted: Mon Dec 03, 2007 4:44 pm Post subject: |
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| Config file vars kind of fill this gap. They are static values though. |
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