I am not able to find binding.expression in Vue 3 from my custom directive's events.
Has it been replaced by something else?
I need to access the raw expression to process it rather than the evaluated expression value.
Thank you.
Related
I've seen a lot of answers about how to send PUT/DELETE/PATCH HTTP requests with thymeleaf, and it's by using th:method = "the_specific_method", but i haven't found the thymeleaf specification about that. Can anyone help showing me where is it?
Thanks in advance.
I've tried to google for the answer, but no luck.
th:method isn't special to Thymeleaf -- it's just like any other plain old attribute which will output the result of an expression to the method attribute. It doesn't do (or care about) anything else. You can put any string and/or string expression into it, and Thymeleaf will happily output it.
th:method="${'the_specific_method'}"
will output
method="the_specific_method"
without regards to whether or not it's valid. If you want to learn about the method attribute, you just need to learn about how method works in plain old regular html and how browsers (and/or Spring) work with it.
I'm trying to get information from a XML file with Nokogiri. I can retrieve file using
f = File.open("/my/path/file.xml")
cac=Nokogiri::XML(f)
And what a get is a fancy noko:file. My row tags are defined like
<z:row ...info..../>
like
<Nokogiri::XML::Element:0x217e7b8 name="z:row" attributes=[#<Nokogiri::XML::Attr:0x217e754 name="ID_Poblacio" value="3">
and I cannot retrieve the rows using either:
s=cac.at_xpath("/*/z:row") or
s=cac.at_xpath("//z:row") or
s=cac.at_xpath("//row") or
s=cac.at_xpath("z:row")...
Probably I'm really fool but I cannot figure out which can be the issue.
Does anyone face this problem?
Thanks in advance.
P:S I tried to paste my cac file directly from bash but something wierd happens with format so I remove it from question. If anyone can explain how to do it I will appreciate it.
Your XML element name contains a colon, but it is not in a namespace (otherwise the prefix and uri would show up in the dump of the node). Using element names with colons without using namespaces is valid, but can cause problems (like this case) so generally should be avoided. Your best solution, if possible, would be to either rename the elements in your xml to avoid the : character, or to properly use namespaces in your documents.
If you can’t do that, then you’ll need to be able to select such element names using XPath. A colon in the element name part of an XPath node test is always taken to indicate a namespace. This means you can’t directly specify a name with a colon that isn’t in a namespace. A way around this is to select all nodes and use an XPath function in a predicate to refine the selection to only those nodes you’re after. You can use a colon in an argument to name() and it won’t be interpreted as a namespace separator:
s=cac.at_xpath("//*[name()='z:row']")
I'm working on a Pylons project using Jinja2 templating. I want to test for the request URI and/or controller inside the Jinja2 templates - is there an equivalent to a getRequestUri() call? I can set a context variable as a flag inside all the controller methods to do what I want, but that seems a bit like writing my home address on each and every one of my house keys... i.e. not quite the right way to do it.
Solution: not quite a function call, but I can test against url.environ.PATH_INFO. It only gives me the URL path, not the hostname, and I don't know that it would give me the query string, but it gives me what I need.
I have hashmap that was created on a page using the struts2 <s:set> tag. It looks something like this
<s:set var="mymap" value="#request.mymap"/>
At some point in the page, i need to get a value from the hashmap based upon a key, and i want to do it using OGNL.
The key is generated based upon some logic, which i store using another <s:set> tag. Something like this
<s:set var="mykey" value="1">
I need to get a value from the hashmap using this key. And I need to display it.
How do I simply call the get function on the hashmap?
I tried this
<s:property value="#mymap[#mykey]"/>
and this
<s:property value="#mymap[%{#mykey}]"/>
and this
<s:property value="%{#mymap[%{#mykey}}]"/>
The third one obviously does not work because of the nesting problem.
But the same nesting logic is applicable to the second case as well, due to the manner the value attribute is handled. However none seem to work for me.
The issue here is that my key is unknown. It is a dynamically generated string based upon some pattern. I need to access the object stored in the hashmap using this dynamic key. And due to the inability of nesting ognl, I am in a fix.
I suppose the issue is very simple. I almost feel that I get it, but somehow the solution eludes me.
I suppose I was using a different version of struts wherein using the %{} was required for the expression to be evaluated. I changed the jar files now.
This is what did the job for me:
<s:property value="#mymap.[#mykey2]"/>
My problem was coming because I was trying to use it in a href for a s:a tag. And without the %{} operator, the expression was not being evaluated.
So, i guess, i was right in the beginning itself. Rest of the time, it was just me being silly. :>
Update:
I wrote a blog post on the issue, in case anyone is interested.
http://mycodefixes.blogspot.com/2010/11/struts-2-creating-and-accessing-maps.html
I would like to parse standard security expressions like hasRole etc. to get their value in a variable (in a JSP). How can I do that? SpelExpressionParser is the standard EL parser, but I don't think it will parse the security expression.
The simpliest approach is to use a <sec:authorize> tag and modify a desired variable inside its body.
If you actually want to evaluate expressions manually, look at the source of AuthorizeTag - it gets the first bean of type WebSecurtyExpressionHandler from the web application context and uses it to obtain ExpressionParser and EvaluationContext.
I've posted an answer in this topic here - How to parse spring security expressions programmatically. I think this answers your question also.