I am trying to validate phone number for the below condition,
If all 10 digits are of same number,it should display an error message.
If it starts with 1, it should display an error message.
Please share your suggestion if you have come across such scenario.
Without example code, it will be hard for us to see what you are trying to do - and if you have even attempted at solving it yourself.
But oh well, there are multiple ways of doing this, what you want is serverside validation - as you NEVER want to validate on the users end.
How can you limit the value from input using AngularJS?
Adding a listener on a model in angularjs With this one (And I 'THINK' this is what you want), you can update 'something' according to what is being input into the text area.
Related
My goal is very simple and I would guess it is a very common goal among web developers.
I am creating a Rails (5.1) application, and I simply want to use AJAX to get the value of a specific cell in a specific row of a specific table in my database (later I am going to use that value to highlight some text on the current page in the user's browser).
I have not been able to find any documentation online explaining how to do this. As I said, it seems like a basic task to ask of jquery and ajax, so I'm confused as to why I'm having so much trouble figuring it out.
For concreteness, say I have a table called 'animals', and I want to get the value of the column 'species' for the animal with 'id' = 99.
How can I construct an AJAX call to query the database for the value of 'species' for the 'animal' with 'id' = 99 .
Though some DBs provide a REST API, what we commonly do is define a route in the app to pull and return data from the DB.
So:
Add a route
Add a controller/action for that route
In that action, fetch the data from the DB and render it in your preferred format
On the client-side, make the AJAX call to that controller/action and do something with the response.
I have a table where some fields have a validation rule set, and a validation message.
Data entry is done in a form, and when the data validation rule is broken then the validation error message is displayed in a pop-up. All good so far.
However I then want to have the form text box or combobox for the field that is triggering the validation message be highlighted on the form e.g. with a different background colour.
I assumed I would need to do this in the On Error procedure for the form, and specify the error number. But I have no idea how to find the error number? E.g. this method: How to Change Table Validation Error Message in MS Access
Perhaps I am going about this completely the wrong way and instead of specifying the error messages in the table properties I should be setting up it up with VBA?
V grateful if anyone can point me in the right direction with this as I am still a beginner :)
The error number you seek is 7753 - this is returned by the DataErr (1st argument) of the event procedure for the On Error event.
However, I personally don't like using Validation Rules in Access, and prefer to test the validity of input through VBA as part of the data submission (i.e. when the user clicks on a control to submit their data)
For example, this approach is similar to web forms flagging invalid fields when the form is submitted, as opposed to locking a user into a particular field until valid data has been specified.
I am trying to get either a dropdown or selection box(prefer the later, because of the possibility to choose multiple values at once) in a webform.
In this case i already got the dropdown working, based on measures.measurement_type. The second needs to be measures.measurement, filtered by the type selected in the first dropdown.
I can not seem to get this working. I tried googling, but without succes. Can anyone help me get on the right track?
I found solutions using Arrays, but no working solution using 1 database table.
using ruby 4.2
Thanks
There are two options for this.
Using AJAX calls. Like #Ronan said in his answer, you need to make an AJAX call on the selection of first drop down (on change method). In the rails action method, you can render a JS partial where you can set the filtered items for second drop down.
Another one is totally client side. Like render all the possible items of both drop downs to client side. Meaning both type and measurements as javascript array. Then when changing the type drop down, filter the measurements array using jQuery and populate in the second drop down.
You gotta use some ajax for doing that, can't see other way. When your measures.measurement_type changes, you send a request passing that measurement_type as param for your action. In that action, you retrieve the collection of measurements based on the measurement_type passed in the param, and then return that data to be handled on your success ajax callback. On that method, with some jquery you should populate the second input with the options returned.
This is some simpler explanation... you should take some look at a more complete article for understanding step-by-step. Would suggest this one, for example: https://remysharp.com/2007/01/20/auto-populating-select-boxes-using-jquery-ajax. Good luck!
I have created Wordpress custom fields through functions.php. My code works fine, and I've few input fields and some checkboxes.
Problem is when I save post, even if I don't put content inside my form, these rows are created in DB. I'd like to do some kind of php check and avoid creation of row in DB if field content is not saved.
I tried several ways, but in most cases it would result in incorrect behaviors of checkboxes for example.
Full code is here: http://pastebin.com/embed_js.php?i=Vvnseiep
I'd appreciate your help in this matter. I'm not very experienced.
Thanks!
Here Validation part comes into play. Why cant you use Javascript to validate your input in the client environment itself and then allowing it to hit the db.
Name all of the checkboxes the same(name="meta_box_check[]"). They must still have different ID's. When the form is posted you will be given an array of values that were checked in $_POST['meta_box_check']. You can then check if the array is empty. You can also save the checkbox data as JSON data. This isn't always good practice, but will only use one data row to save any and all checkbox values.
<?php
if(!empty($_POST['meta_box_check']))
{
//process your data and save it
update_post_meta($post_id, 'meta_features_checklist', json_encode($_POST['meta_box_check']));
}
?>
This is a basic example and make sure you do some data validating before saving.
i'm working in a symfony project and using sfPropelPager to show a paged list of elements.
The problem is that with a great amount of data to list (i.e. thousands of registers) it makes a query to the database for each page to show!!!! That means about 100 extra queries in my case, and that is unacceptable.
Showing some of my code: the function that returns the pager object
$pager = new sfPropelPager('MyTable',sfConfig::get('sfPropelPagerLines'));
$c = new Criteria();
$c->add('my_table_field',$value);
$c->addDescendingOrderByColumn('date');
$pager->setCriteria($c);
$pager->init();
return $pager;
So, please, if you know a way to get all the results with only one query, it would be a great solution for my problem. Otherwise i must implement that list with an ajax call for every page the user wants to see
Thank you very much for your time.
I'm not sure to get your problem but, anyway, avoid the use of Criteria. Try to make queries with the ModelCriteria API: http://www.propelorm.org/reference/model-criteria.html.
For each paginated page, a query to the database will be done, this is the standard behavior for all pagers I know. If it's related to related objects (assuming you want to display information from relations), you may want to create a query that links those objects before to paginate, that way you'll get one query per page for all your data to display.
Read this doc for instance: http://www.propelorm.org/documentation/03-basic-crud.html#query_termination_methods
At last i did'nt get a solution for the problem, i had to implement the list via AJAX call, calling to a function that returns the requested page, so at the load of the page, no query for this list is slowing the user experience.
Thank you anyway to help me :)