I would like to create a form that changes dynamically.
I have a form for creating a project (with fields such as: project_name, project_description...) and the project can have any amount (bigger or equal to 0) of categories.
What i want is to display a button which would give the user the option to add another category field. In addition I would also like the option for category fields to be "deleteable" by the user (if he changes his mind or made a mistake). What would be the best way to do so. I would like an Ajax type solution.
My solution so far is to leave an empty div beneath the last category and onclick of the button to load another field into that div with yet another div which will be used for the next div. Not to happy with this solution since i now have to count how many fields I have and give each div it's own id which complicates the matter even more.
Is there a more simple solution to this?
If you are trying to add fields dynamically with a button, you can easily do so by doing something like the following:
HTML:
<form>
<p>
<label>Name:</label> <input type="text">
<label>Age:</label> <input type="text">
<span class="remove">Remove</span>
</p>
<p>
<span class="add">Add fields</span>
</p>
</form>
JS:
$(".add").click(function() {
$("form > p:first-child").clone(true).insertBefore("form > p:last-child");
return false;
});
$(".remove").click(function() {
$(this).parent().remove();
});
Demo: http://jsfiddle.net/UeSsu/1/
I started to write a form generator is based on a definition in JSON a while back. It works but could use some enhancements. It's written using Prototype.js but it wouldn't be a huge effort to port it over to jQuery.
You're welcome to steal the code. (just view source)
I've done something similar. To delete fields I didn't really removed fields. I just hidden them with a display:none and had a hidden input "delete" that I trigger to true. Then, the page receiving the result knows which field is to be deleted in the database.
They are not deleted before the form is submitted. It's like a "two pass" conception. But if you don't really need a true ajax, it works fine. Otherwise you need your JS remove function to call the server and tell to delete the field with its id. A little bit more complex to code.
Related
I am working on a React App in which it requires working with tables and adding rows dynamically. I used this answer to achieve that: https://stackoverflow.com/a/54455262/13037132. I am trying to label an <input type="file" id={id} /> for styling the whole
in every cell of the table. The id={id} attribute in the input element is for dynamically adding a row when an Add Row button is clicked.
I found some solution for styling this input, but it requires labelling it, needs an id attribute to link to. How can I do that, since the id is already occupied? Is there a way to link this input to a label without using the id but something else? If you want any additional data on this, please let me know.
And I am also looking for a way to add columns too just like I am adding rows using the above-stated answer. Can anyone help?
Use a class instead of id, since multiple id with same value does not help, use a class and access that input by $(this):
$('.class_name').click(function(){
$(this) // this will acquire the clicked/target input
})
I would like to
(1) not show any suggestions to the user while typing in an input field.
This can be done like this:
<input autocomplete="off">
However, I noticed that this also
(2) disables the history chaching, e.g. when you go to another site and click on the history back button the input field will be empty.
You can try it here:
http://jsfiddle.net/LC53F/
Only text inserted into the first field will survive going to a new page and back again.
Is there a way to only have effect (1), but not (2)?
This solution should work, but is not ideal: just sharing an idea.
I don't think you will be able to preserve history with 'autocomplete', so let's try to fiddle out something.
Here's an idea: the history is based on input names, so you can turn off the autocompletion from other sites by using an uncommon name (but still constant, for example: 'email_fakeSuffix_194h5g48').
Then, to turn off autocompletion from this input previous values, you can change its name everytime the page is loaded (ie. append a random number). The problem is that, doing this, you will also turn off the history.
So, the main idea is to use an uncommon input's name and to change it just before submitting the form:
The value won't be saved by the browser because the name has changed
If you navigate to another page without submitting, the value will
still be set because you haven't change the name yet.
Here's an example using JQuery (you can use anything else, or even vanilla JS)
JSFiddle: http://jsfiddle.net/vse9jx3r/
HTML
<form>
<input id="input1" name="email_fakeSuffix_194h5g48">
<input name="input2">
<input type="submit">
</form>
JS
$('form').submit(function() {
$('#input1').attr('name', 'email_fakeSuffix_194h5g48_' + Date.now());
//SUBMIT THE FORM (MAY DO NOTHING AT ALL)
});
You can tell me if I'm not clear enough.
This works for me (using jQuery 1.9.1):
$(function(){
$('input[type=text]').prop('autocomplete','off');
$('#formid').on('submit', function(e){
$('input[type=text]').removeProp('autocomplete');
});
});
In my AngularJS project I have an account details page where you can change your personal account information. This page allows for multiple phone numbers and e-mailaddresses to be supplied. Using mouse input (or tabbing to buttons and pressing them with space bar) works perfectly, however I'd like to add the convenience of the enter key pressing the 'logical' buttons.
My form looks like (accidentally forgot to translate a few items):
A simplified version of the HTML for the form can be found on PasteBin, I've mainly removed the directives for managing the lists.
All buttons are <button> elements except for the cancel button which an <a> to the previous page, and the submit button is <button type="submit">.
When selecting any text box and pressing enter, the first (non-disabled) <button> element is 'clicked'. Meaning if I would change the last name, hit enter, the first phone number would be removed.
When you're in a new entry of phone numbers or e-mailaddresses (the row with the green + button) it should click that button, and if it's disabled do nothing.
When you're in any other text box on the form it should hit the save button, and also if the save button's disabled, do nothing.
Both buttons will be disabled based on form validation.
There'd be no trouble in changing the type of a button from button to submit if that'd help.
I would preferably have an all HTML solution, using just semantics, but I doubt that's really possible. So the logical alternative would be to use an AngularJS directive.
Please do not provide a jQuery or plain JavaScript solution relying on IDs or something like that. I don't want to hack my way around AngularJS, rather embrace it.
In the meantime I've worked on a directive that allows me to declare what I've called 'submit scopes'.
In essence you have actions (inputs) and targets (buttons), they're bound through a service by a key you can assign in the template. To avoid keys from clashing and from simple annoying work you can create a submit-scope which will cause it's children to prepend a unique key to the value they're accessing.
Within a submit-scope you can still override an action to use a global key instead by setting the attribute global-submit="true".
Example code:
<div submit-scope>
<input type="text" submit-action />
<button type="button" submit-target>Pressing enter in the above field will click this button.</button>
</div>
You can view the entire source code and a slightly larger example on Plnkr.
I just tried to replace
<button>Cancel</button>
with
<input type="button" value="Cancel">
and it seems to work correctly...
I have a question about Django. When you configure your views to use a method of POST to get the information back from the client into your view/template can you also send over the div id's ?
The reason I ask is that I have a form with loads of information coming back from the client and want to be able to sort it (within Django) by the div id`s.
Thanks,
Yes, that's possible. You can add a hidden input field which contains the value of the div id. Just put the following within the <form> tags:
<input type="hidden" name="form_id value="name_of_id">
You can now retrieve the value in your Django view.
Alternative but similar solution is to give the button, to post the form with, the name of the div id.
<button type="submit" value="div id" name="div id">Submit</button>
I am building a faceted search system that has inputs in a sidebar (the facets are check boxes), and an input in the header of the page (the main query box). All of these inputs are submitted simultaneously when the user submits a search.
The only way I can think of to make this work is to wrap the entire page in an HTML form tag. Something like the following pseudo-html:
<form>
<div id='header'>
<logo/>
<input id='q'/>
<!-- a bunch more stuff -->
</div>
<div id='sidebar'>
<div id='sidebar-facets-subsection'>
<input id='facet1'/>
<input id='facet2'/>
<input id='facet3'/>
<!-- a bunch more stuff -->
</div>
<div id='sidebar-form-subsection'>
<form id='unrelated-form'>
<input id='unrelated-input-1'/>
<input id='unrelated-input-2'/>
</form>
</div>
</div>
<!-- a bunch more stuff -->
</form>
This would work, except for three things:
I need to use other forms in the page, as I've indicated above.
I use different django templates to generate the header and the sidebar, making the templates have dependencies on each other.
It's a real mess since the sidebar is in reality about 100 lines, not three.
Is there a more clever way of doing this that I'm not aware of, or is creating huge HTML forms the norm? In circumstances like this, is it better to use Javascript to somehow generate the input entries in a more normal form? Or is that the only option?
Any creative solutions or ideas?
You can make it work with Javascript without sacrifying accesibility
Put all the checkboxes in the header and wrap them in div
Set up and empty but clean side bar
Using Javascript, move you checkboxes from the header into the side bar
Attach a callback to the form.submit event, and when the user submit the form, cancel the event then, take the data from the search field and the checkboxes and send it as an Ajax POST request.
Using a framework like jQuery, it's a 15 minutes job.
If the user has JS enable, the form will post the request and everything will work. If the user doesn't have javascript enable, the checkboxes will be in the header and so they will work, at just the price of a slightly less elegant design.
But people with Javascript disable are used to design changes so it's ok.
Use javascript to populate a hidden field with a list of this checkboxes name=value pairs on form submit and treat this in serverside code, spliting the string into an array, etc.
Please note that this is not a good aprouch, since you loose accecibility to those with javascript disabled. The form tag is the only accessible way of doing so.
You can try to change the layout, if you can, swaping the checkboxes with links of buttons that filters the data, almost the way most ecommerce sites do out there.
I believe you have two options:
1.) a page wide form element. All "submit" buttons submit to the same form and the server-side script processes the form for all filled elements. By page wide, I'm not being literal... The related inputs all in the same form tag. Other forms are placed in other form tags.
2.) multiple forms, with a client side script which populates hidden form fields with the data from the other form before submission.
1 requires more work, but 2 may not work for every visitor.
Do consider the fact that, just because you have one form container, you don't have to necessarily display everything together for the user. Encapsulate inputs in divs and position them according to your will. It may not be easy, but it's definitely possible.