I want to test if a variable is not equal to
< p>< /p>
(I put spaces before p and / here otherwise it wont show, in my case there is no space)
I did : <span th:if="${myString!='<p></p>'} ">
But it doesn't work.
What is the right syntax?
Thanks.
You are comparing Strings thus != is not the right condition. User .equals() and just negate it. Replace your code with this:
<span th:if="${!myString.equals('<p></p>')} ">
Related
I've stored a string in the database. When I save and retrieve the string and the result I'm getting is as following:
This is my new object
Testing multiple lines
-- Test 1
-- Test 2
-- Test 3
That is what I get from a println command when I call the save and index methods.
But when I show it on screen. It's being shown like:
This is my object Testing multiple lines -- Test 1 -- Test 2 -- Test 3
Already tried to show it like the following:
${adviceInstance.advice?.encodeAsHTML()}
But still the same thing.
Do I need to replace \n to or something like that? Is there any easier way to show it properly?
Common problems have a variety of solutions
1> could be you that you replace \n with <br>
so either in your controller/service or if you like in gsp:
${adviceInstance.advice?.replace('\n','<br>')}
2> display the content in a read-only textarea
<g:textArea name="something" readonly="true">
${adviceInstance.advice}
</g:textArea>
3> Use the <pre> tag
<pre>
${adviceInstance.advice}
</pre>
4> Use css white-space http://www.w3schools.com/cssref/pr_text_white-space.asp:
<div class="space">
</div>
//css code:
.space {
white-space:pre
}
Also make a note if you have a strict configuration for the storage of such fields that when you submit it via a form, there are additional elements I didn't delve into what it actually was, it may have actually be the return carriages or \r, anyhow explained in comments below. About the good rule to set a setter that trims the element each time it is received. i.e.:
Class Advice {
String advice
static constraints = {
advice(nullable:false, minSize:1, maxSize:255)
}
/*
* In this scenario with a a maxSize value, ensure you
* set your own setter to trim any hidden \r
* that may be posted back as part of the form request
* by end user. Trust me I got to know the hard way.
*/
void setAdvice(String adv) {
advice=adv.trim()
}
}
${raw(adviceInstance.advice?.encodeAsHTML().replace("\n", "<br>"))}
This is how i solve the problem.
Firstly make sure the string contains \n to denote line break.
For example :
String test = "This is first line. \n This is second line";
Then in gsp page use:
${raw(test?.replace("\n", "<br>"))}
The output will be as:
This is first line.
This is second line.
i'm searching for a name in an html page of facebook.
if I take the file html.txt like this:
html = open('html.txt','r').read()
soup = BeautifulSoup(html)
if I search for the name with find it seems to be ok, but if i Try searching with BS i cant find anything..
>>>html.find("Joseph Tan")
98939
>>>html[98700:99000]
'<div class="fwn fcg"><span class="fcg"><span class="fwb"><a class="profileLink" href="https://www.facebook.com/ASD.391" data-ft="{"tn":"l"}" data-hovercard="/ajax/hovercard/user.php?id=123456">Alex Tan</a></span> condivided the photo <a class="profileLink" '
>>> soup.findAll('div',{'class':'fwn fcg'})
[]
>>> soup.findAll('span',{'class':'fwb'})
[]
>>> soup.findAll('a',{'class':'profileLink'})
[]
>>>
Someone can help me? thanks a lot
EDIT: RE-CREATED HTML PAGE
html page
It is working as below:
print soup.find_all('div', class_=['fwn','fcg'])
OUTPUT:
[<div class="uiHeaderActions rfloat _ohf fsm fwn fcg"><a class="_1c1m" href="#" role="button">Segna tutti come già letti</a> · <a accesskey="m" ajaxify="/ajax/messaging/composer.php" href="/messages/new/" id="u_0_8" rel="dialog" role="button">Invia un nuovo messaggio</a></div>, <div class="uiHeaderActions fsm fwn fcg">Segna come già letto · Impostazioni</div>, <div class="fsm fwn fcg"><a ajaxify="/settings/language/language/?uri=https%3A%2F%2Fwww.facebook.com%2Fshares%2Fview%3Fid%3D10152555113196961&source=TOP_LOCALES_DIALOG" href="#" rel="dialog" role="button" title="Usa Facebook in un'altra lingua.">Italiano</a></div>]
According to ==>this link, this is the style of how to search classes and other HTML elements using BS. Please check.
There were two problems.
1. The way you wrote is not matched with the link above I provided. May be you are not using updated version of BS.
2. There are two classes 'fwn' and 'fcg'. So you have to give their names in a list and this is how I got the output.
Same is is applicable for 'span' and 'a' as below:
print soup.find_all('span', class_='jewelCount')
print soup.find_all('a', class_='_awj')
Your given 'span' with class 'fwb' and given 'a' with class 'profileLink' was not found.Because, they are not present in the HTML.
You can check by printing all spans and a's.
Write print soup.find_all('a') and print soup.find_all('span')* to check on your own.
Hope this will help, if not, write again! :)
I am calling an action by remoteFunction for showing some value in some field.The value is viewing but with in []. I have no idea why it is behaving like this. Can anyone please help me on this please ? I am using grails 2.1.0. here are my attempts below :
my remoteFunction >>
<g:remoteFunction action="setValueForDetails" params="'procurementMasterId='+procurementMasterId" update="changedValue"/>
my action in controller >>
def setValueForDetails(){
def otmIFQDetailsByProcurementMaster
if(params.procurementMasterId != null && params.procurementMasterId != "" && params.procurementMasterId != "null"){
otmIFQDetailsByProcurementMaster = commonService.getOtmIFQDetailsValueByProcurementMaster(Long.parseLong(params.procurementMasterId))
}
render (template: 'ifqDetails', model: [otmIFQDetailsByProcurementMaster: otmIFQDetailsByProcurementMaster])
}
my field where I want to set the value in template >>
<g:textField id="PROCUREMENT_TYPE" name="PROCUREMENT_TYPE.id" readonly="" value="${otmIFQDetailsByProcurementMaster?.PROCUREMENT_TYPE}" class="form-control" />
I guess the 'PROCUREMENT_TYPE" is an Array of enums due to spelling, and displaying. So if You want to 'print' value without square brackets, You should change value to (if You want only first result):
value="${otmIFQDetailsByProcurementMaster?.PROCUREMENT_TYPE[0]}"
or if You want to should more than one element from list:
value="${otmIFQDetailsByProcurementMaster?.PROCUREMENT_TYPE.toString().replace('[', '').replace(']', '')}"
or simply iterate through the elements of PROCUREMENT_TYPE and show as many textfield as many PROCUREMENT_TYPE values You have.
i am learning asp.net mvc just going through online tutorial
1) just see <span>#model.Message</span> and #Html.Raw(model.Message)
suppose if "Hello Word" is stored in Message then "Hello Word" should display if i write statement like
<span>#model.Message</span> but i just could not understand what is the special purpose about #Html.Raw(model.Message).
what #Html.Raw() will render ?
please discuss with few more example to understand the difference well.
2) just see the below two snippet
#if (foo) {
<text>Plain Text</text>
}
#if (foo) {
#:Plain Text is #bar
}
in which version of html the tag called was introduce. is it equivalent to or what ? what is the purpose of
this tag ?
just tell me about this #:Plain Text is #bar
what is the special meaning of #: ?
if our intention is to mixing text with expression then can't we write like Plain Text is #bar
3) <span>ISBN#(isbnNumber)</span>
what it will print ? if 2000 is stored in isbnNumber variable then it may print <span>ISBN2000</span>. am i right ?
so tell me what is the special meaning of #(variable-name) why bracket along with # symbol ?
4) just see
<span>In Razor, you use the
##foo to display the value
of foo</span>
if foo has value called god then what this ##foo will print ?
5 ) see this and guide me about few more syntax given below point wise
a) #(MyClass.MyMethod<AType>())
b)
#{
Func<dynamic, object> b =
#<strong>#item</strong>;
}
#b("Bold this")
c) <div class="#className foo bar"></div>
6) see this
#functions
{
string SayWithFunction(string message)
{
return message;
}
}
#helper SayWithHelper(string message)
{
Text: #message
}
#SayWithFunction("Hello, world!")
#SayWithHelper("Hello, world!")
what they are trying to declare ? function ?
what kind of syntax it is ?
it seems that two function has been declare in two different way ? please explain this points with more sample. thanks
Few More question
7)
#{
Func<dynamic, object> b = #<strong>#item</strong>;
}
<span>This sentence is #b("In Bold").</span>
what the meaning of above line ? is it anonymous delegate?
when some one will call #b("In Bold") then what will happen ?
8)
#{
var items = new[] { "one", "two", "three" };
}
<ul>
#items.List(#<li>#item</li>)
</ul>
tell me something about List() function and from where the item variable come ?
9)
#{
var comics = new[] {
new ComicBook {Title = "Groo", Publisher = "Dark Horse Comics"},
new ComicBook {Title = "Spiderman", Publisher = "Marvel"}
};
}
<table>
#comics.List(
#<tr>
<td>#item.Title</td>
<td>#item.Publisher</td>
</tr>)
</table>
please explain briefly the above code. thanks
1) Any kind of #Variable output makes MVC automatically encode the value. That is to say if foo = "Joe & Dave", then #foo becomes Joe & Dave automatically. To escape this behavior you have #Html.Raw.
2) <text></text> is there to help you when the parser is having trouble. You have to keep in mind Razor goes in and out of HTML/Code using the semantics of the languages. that is to say, it knows it's in HTML using the XML parser, and when it's in C#/VB by its syntax (like braces or Then..End respectively). When you want to stray from this format, you can use <text>. e.g.
<ul>
<li>
#foreach (var item in items) {
#item.Description
<text></li><li></text>
}
</li>
</ul>
Here you're messing with the parser because it no longer conforms to "standard" HTML blocks. The </li> would through razor for a loop, but because it's wrapped in <text></text> it has a more definitive way of knowing where code ends and HTML begins.
3) Yes, the parenthesis are there to help give the parser an explicit definition of what should be executed. Razor makes its best attempt to understand what you're trying to output, but sometimes it's off. The parenthesis solve this. e.g.
#Foo.bar
If you only had #Foo defined as a string, Razor would inevitably try to look for a bar property because it follows C#'s naming convention (this would be a very valid notation in C#, but not our intent). So, to avoid it from continuing on we can use parenthesis:
#(Foo).bar
A notable exception to this is when there is a single trailing period. e.g.
Hello, #name.
The Razor parser realizes nothing valid (in terms of the language) follows, so it just outputs name and a period thereafter.
4) ## is the escape method for razor when you need to actually print #. So, in your example, you'd see #foo on the page in plain text. This is useful when outputting email addresses directly on the page, e.g.
bchristie##contoso.com
Now razor won't look for a contoso.com variable.
5) You're seeing various shortcuts and usages of how you bounce between valid C# code and HTML. Remember that you can go between, and the HTML you're seeing is really just a compiled IHtmlString that is finally output to the buffer.
1.
By default, Razor automatically html-encodes your output values (<div> becomes <div>). #Html.Raw should be used when you explicitly want to output the value as-is without any encoding (very common for outputting JSON strings in the middle of a <script>).
2.
The purpose of <text> and #: is to escape the regular Razor syntax flow and output literal text values. for example:
// i just want to print "Haz It" if some condition is true
#if (Model.HasSomething) { Haz It } // syntax error
#if (Model.HasSomething) { <text>Haz It</text> } // just fine
As of #:, it begins a text literal until the next line-feed (enter), so:
#if (Model.HasSomething) { #:Haz It } // syntax error, no closing '}' encountered
// just fine
#if (Model.HasSomething)
{
#:Haz It
}
3.
By default, if your # is inside a quote/double-quotes (<tr id="row#item.Id"), Razor interprets it as a literal and will not try to parse it as expression (for obvious reasons), but sometimes you do want it to, then you simply write <tr id="row#(item.Id").
4.
The purpose of ## is simply to escape '#'. when you want to output '#' and don't want Razor to interpret is as an expression. then in your case ##foo would print '#foo'.
5.
a. #(MyClass.MyMethod<AType>()) would simply output the return value of the method (using ToString() if necessary).
b. Yes, Razor does let you define some kind of inline functions, but usually you better use Html Helpers / Functions / DisplayTemplates (as follows).
c. See above.
6.
As of Razor Helpers, see http://weblogs.asp.net/scottgu/archive/2011/05/12/asp-net-mvc-3-and-the-helper-syntax-within-razor.aspx
I want to remove all images from a HTML page (actually tinymce user input) which do not meet certain criteria (class = "int" or class = "ext") and I'm struggeling with the correct approach. That's what I'm doing so far:
hbody = Hpricot(input)
#internal_images = hbody.search("//img[#class='int']")
#external_images = hbody.search("//img[#class='ext']")
But I don't know how to find images where the class has the wrong value (not "int" or "ext").
I also have to loop over the elements to check other attributes which are not standard html (I use them for setting internal values like the DB id, which I set in the attribute dbsrc). Can I access these attributes too and is there a way to remove certain elements (which are in the hpricot search result) when they don't meet my criteria?
Thanks for your help!
>> doc = Hpricot.parse('<html><img src="foo" class="int" /><img src="bar" bar="42" /><img src="foobar" class="int"></html>')
=> #<Hpricot::Doc {elem <html> {emptyelem <img class="int" src="foo">} {emptyelem <img src="bar" bar="42">} {emptyelem <img class="int" src="foobar">} </html>}>
>> doc.search("img")[1][:bar]
=> "42"
>> doc.search("img") - doc.search("img.int")
=> [{emptyelem img src"bar" bar"42"}]
Once you have results from search you can use normal array operations. nonstandard attributes are accessible through [].
Check out the not CSS selector.
(hbody."img:not(.int)")
(hbody."img:not(.ext)")
Unfortunately, it doesn't seem you can concat not expressions. You might want to fetch all img nodes and remove those where the .css selector doesn't include neither .int nor .ext.
Additionally, you could use the difference operator to calculate which elements are not part of both collections.
Use the .remove method to remove nodes or elements: Hpricot Altering documentation.