I see some posts on this same issue but would like further clarification as I cannot get any of these answer to work especially as I can't pick the answer out of the Jquery documentation.
I want to combine some classes for the convenience of cascading appropriate styling. I could simply replicate the styling in a single class but I am assuming that that would be bad practice.
<div class="left_Item drop_Down" id="col_1">some stuff</div>
$(".left_Item, .drop_Down#col_1").whatever....;
// matches every occurrence of class left_Item with the single occurrence of //drop_Down#col_1 ... this tallies with the multiple selector documentation.
$("#col_1").whatever....;
//obviously does match as the selector is only looking at the id.
//however
$(".drop_Down#col_1").whatever....;
//does not match Does this imply that the classes cannot be matched separately? So....
$(".left_Item.drop_Down#col_1").whatever....;
// various posts on so state that this should match it does not for me. Nor does
$(".left_Item .drop_Down#col_1").whatever....;
$(".left_Item").filter(".drop_Down#col_1).whatever....;
// various posts on so state that this should match also but it does not for me.
So firstly I assume that I am doing the correct thing using multiple classes. If not I'll stop trying to make this work!
Secondly please can some one give the correct jquery syntax to match an element with multiple classes.
Thx
The syntax is as follows (for CSS or jQuery):
.class1.class2
In your case:
$(".left_Item.drop_Down").whatever...
If you want to use an id as well as a class selector, then put the id first:
$("#col_1.left_Item.drop_Down")
Though since ids are supposed to be unique, I don't understand why you don't just use $("#col_1")
If the classes are your main focus then try this.
$('.left_Item.drop_Down').whatever...
But if you want an Id that has classes left_Item drop_Down you might do this
$('#col_1.left_Item.drop_Down').whatever...
Related
I'm trying to create a chat bot that will help users search up motorcycles.
I'm new to API.AI and have set up my entities and their synonyms, my intent and user expressions, as well as references to the entities (#engineSize, #make, #bikeType).
My problem is when I try to add a required action and prompt, and then try to save the intent, I get the following message:
"The following entities reference each other and form an infinite loop: [engineSize]."
Initially I thought I was using the references wrong in the user expressions. I deleted every reference except for one expression which uses all three entities.
I can't figure out what I'm doing wrong. Any help would be greatly appreciated, thanks! Pix below for further details.
EDIT: I fixed one of the issues of trying to pass a template expression as an example. However, I still get the same error message. I will replace and update my image links to include the edits.
Annotated User expressions
Required Actions
Interestingly enough, the answer to this post would have been difficult to find because the problem was in defining my entities.
In the entity definitions, I included an #ref to the entity itself. ie the bikeType entity contained #bikeType as one of its definitions.
This is not to be mistaken with the User Expressions. As long as the user expression is marked as a Template (the entire line is denoted with an '#' on the far left, as opposed to a large " ), there should be no issues.
Edited for clarity to get at root problem
In the provided user input examples you give the intent, you are supposed to provide general examples and then highlight any text belonging to an entity to map where entities appear in user's inquiries.
In your case, you have input the actual entity reference '#engineSize' as an example belonging to the engineSize entity, creating a self reference.
A proper provided user example would look like:
Also note though that if you are just using entities to store generic information like numbers, addresses, times, etc. it generally makes far more sense to use prebuilt system entities for those categories than create a custom entity, for example #sys.number-integer might be exactly what you need
It looks like you need to get a firmer understanding of entities, for which I would recommend the documentation:
https://docs.api.ai/docs/concept-entities
My problem is that I implement multiple times the same row.zul. Now I have an ID error because the row.zul file uses static id's.
In zk 8.0 it is possible to use the tag but I can't use that because we are here at a very old version (3.6.4). Do you know any possibilities to solve that problem? I need to give the elements ID's because I want to read from them
You don't need to autogenerate id's.
They need to be in the correct idScope.
An idscope is marked by the interface IdSpace.
So you need to put the row in a separate idScope, so just wrap a component who implement the IdSpace like window, include or create your own component like extends Div implements IdScope.
If you use CSS selectors, remember that you need to alter it a little bit.
I'm doing some competitions on a website called topcoder.com where the objective is to solve algorithmic problems. I'm using Eclipse for this purpose, and I code in Java, it would be help me to have some predefined templates or macros that I can use for common coding tasks. For example I would like to write methods to be able to find the max value in and int[] array, or the longest sequence in an int[] array, and so on (there should be quite many of these). Note I can't write these methods as libraries because as part of the competition I need to submit everything in one file.
Therefore ideally, I would like to have some shortcut available to generate code both as a method and as a calling statement at once. Any ideas if this is possible?
Sure you can - I think that's a nifty way to auto-insert boilerplate or helper code. To the point of commenters, you probably want to group the code as a helper class, but the general idea sounds good to me:
You can see it listed in your available templates:
Then as you code your solution, you can Control+Space, type the first few characters of the name you gave your template, and you can preview it:
And then you can insert it. Be sure if you use a class structure to position it as an inner class:
Lastly - if you want to have a template inserts a call to method from a template, I think you would just use two templates. One like shown above (to print the helper code) and another that might look like this, which calls a util method and drops the cursor after it (or between the parentheses if you'd like, etc):
MyUtils.myUtilMethod1();${cursor}
I have a custom node type for which I want to have a field that uses a special combobox based on list_text. When one chooses the type list_text it is normally possible to enter a static list of selectable texts, however, I want this list to be dynamic, i.e. based on the results of a db_query. What is the best way to do this using Drupal 7?
A simple example for clarification: A node of this custom type X contains a field that points to another node, so whenever a node of type X is created I want a combobox that contains all other nodes.
(Best solution would be to only display the combobox during node creation, and no longer during edit. But I could also live with it if the combobox was shown during the edit as well.)
I have tried to customize options_select by defining my own data type and implementing hook_options_list accordingly. The combobox was displayed during creation with the correct values, however, I could not save it.. I have no idea what went wrong there, but on the first submit it would change to a different theme, and when I tried again I got an internal server error. Am I on the right track at all with defining a completely new data type for the field? there surely must be a simpler way?
You're right in that you don't need a new datatype. Here's a good tutorial on how to do this. It's not specifically for D7 but I didn't see much that wasn't still applicable. There may be a better way to do it in D7 specifically but I would love to know it too if so :)
The tutorial linked by allegroconmolto sent me on the right way. Thanks for that.
Here's the simpler way of doing it: tutorial
Basically, it is, as I assumed, a common problem and hence a simple solution for it was included in the webform module by now. It provides a hook_webform_select_options_info which can be used to register a callback method. The callback method is then called each time a corresponding option select of a webform is shown, so that you can easily fill it with the results of a dbquery or anything else. Works like a charm and takes next to no time to implement.
I was wondering, does Lift have an iteration tag (ex: for, foreach)?
When I was working with JSP, i could easily iterate a List, just with JSP, passing the object to the tag. Something like this, or like this.
I know it's not really the best example, but you do understand my intentions.
To sum up, does this exist with Lift, or if not, how would I manage to do such thing?
The last thing i want to do is hardcode html.
In short: No. Lift’s design strictly separates logic from design and as such forbids the use of generalised tags in the template markup.
Have a look at the view first article in order to see how lift can handle iterations.
An example from the article: Your markup:
<table>
<lift:show.users>
<tr>
<td><f:first_name>David</f:first_name></td>
<td><f:last_name>Pollak</f:last_name></td>
</tr>
</lift:show.users>
</table>
Your code:
class Show {
def users(xhtml: NodeSeq): NodeSeq =
Users.findAll.flatMap(user =>
bind("f", xhtml,
"first_name" -> user.firstName,
"last_name" -> user.nameName
)
)
}
Now, what lift does when it sees the tag <lift:show.users> is calling the corresponding method with the tag’s content as the argument. The tag will then be replaced by the return value of the users method.
The users method does the iteration over all Users and for each user, it binds the values of first and second name to the inner xhtml. All those iterations are then concatenated (through flatMap) and returned.
When I started with lift, I’d always found this approach a little too rigid; having a tiny loop here and there, how could that possibly hurt? But now that I know how easy it is to call and create your own snippets from the template code, I cannot imagine using anything like jsp anymore. It is weak in comparison and clutters your markup. And of course, you lose much of Scala’s power of validation.
Notes:
The reason the template tags are filled with content is for designing purposes. In this case the dummy tags and values are going to be replaced during the bind. The template designers can thus fill the tags with more or less meaningful content which allows the coder to better understand the semantics the designer had in mind.