I've created a search while typing method using this demo:
https://codeforgeek.com/2014/09/ajax-search-box-php-mysql/
But now i'm stuck with processing the results.
I want to receive back a list of data (that works) but also per dataline an id which should not be visible, but
which i can use as post data in the submit.
I probably have to change the json array and put the id in it, but i then i don't know how to seperate the data in the post form and use the id as hidden id.
To clearify my example: I have a table with strings (can be duplicate) and unique number id's.
I want the list to contain the strings and i want to submit with just the id.
I also found a lot of simular projects all looking a bit different, i especially like the looks of this one, creating a hovering results box and not changing anything to my form.
use json_decode on result
json_decode($json) will give you object in return
json_decode($json,true) vill give you array in return
Related
I'm currently developing a table layout.
The tables are using a paginator and a filter function in PHP.
All values are transmitted as GET parameters.
For example, the paginator will use &limit=20&page=5.
The filter is built upon a table row in thead as input fields.
What I mean is that each column has it's own input field.
Once the submit button is clicked, it will pass the data via GET to itself, so the next pageview will query/filter the data correctly.
For example, if I want to filter the postcode the url will be as following:
&limit=20&page=5&postcode=5
Because I'm allowing searches like %5% to show all postcodes where 5 where the result is not limited to 5 only. It will show all data which has a 5 at any spot of the value.
However, if I want to filter the postcodes showing all results with 58, I will type in %58%. As per URL encoding, unfortunately, the URL won't be &postcode=%58% as expected. It will be &postcode=X%.
The question is whether it is somehow possible to get the correct values into the URL?
The problem lays on browser level. If I would change the URL from &postcode=X% to &postcode=%58% directly and hit enter, Chrome would translate it straight away to X%.
Maybe it's possible somehow with meta tags, http headers, or Javascript, etc.
I'm doing it via GET instead of POST because it was - apparently - simpler to integrate with the paginator.
Sorry for my bad English. Any help would be much appreciated.
Thanks a lot.
You should escape the "%" sign itself (that would be "%25"). PHP should be smart enough to decode that automatically.
So &postcode=%58% should become &postcode=%2558%25, which PHP will decode so that $_GET['postcode'] is '%58%'.
You should urlencode your values before inserting them into the params.
Overall though, If you are using mysql I agree with billrichards.
Since you mention %% searches I assume you are using MySQL or another SQL back end to query for the data. In that case I would suggest leaving the querystring always formatted as postcode=58&page=1, and add some other parameter to indicate if it should be a %wildcard% search or exact match, and if the wildcard parameter is there, add the %% on the back end when performing the query.
I have a page that is full of tables (generated by a foreach loop) and every row displays, among other things, a month.
Now I want to give the user the ability to choose a month and have only the table rows for that current month displayed (or no table at all if that month is missing from the table). A bit like the filtering function in Angular JS.
I'm still a bit new to php and the only solution I can up with is to handle the whole thing somewhat clumsily with modifying CSS classes and having the superfluous rows hidden by CSS.
What would be a more efficient way to do this?
Your problem is related with the filter alternate of angular into php.
As you know php is server side. So, if you want to get the filter after a reload or by ajax method, you need a $_GET variable.
Use a different query string in your url for each click of each button. Then retrieve the GET variable and use it to get data from database for relevant category.
I have a 5 level multidimensional array. The number of keys in the array fluctuates but I need to store it in a database so I can access it with PHP later on. Are there any easy ways to do this?
My idea was to convert the array into a single string using several different delimiters like #* and %* and then using a series of explode() to convert the data back into an array when I need it.
I haven't written any code at this point because I'm hoping there will be a better way to do this. But I do have a potential solution which I tried to outline below:
here's an overview of my array:
n=button number
i=item number
btn[n][0] = button name
btn[n][1] = button desc
btn[n][2] = success or not (Y or N)
btn[n][3] = array containing item info
btn[n][3][i][0] = item intput type (Default/Preset/UserTxt/UserDD)
btn[n][3][i][1] = array containing item value - if more than one index then display as drop down
Here's a run-down of the delimiters I was going to use:
#*Button Title //button title
&*val1=*usr1234 //items and values
&*val2=*FROM_USER(_TEXT_$*name:) //if an items value contains "FROM_USER" then extract the data between the perenthesis
&*val3=*FROM_USER(_TEXT_$*Time:) //if the datatype contains _TEXT_ then explode AGAIN by $* and just display a textfield with the title
&*val4=*FROM_USER($*name1#*value1$*name2#*value2) //else explode AGAIN by $* for a list of name value pairs which represent a drop box - name2#*value2
//sample string - a single button
#*Button Title%*val1=*usr1234&*val2=*FROM_USER(_TEXT_$*name:)&*val3=*FROM_USER(_TEXT_$*date:)&*val4=*FROM_USER($*name1#*value1$*name2#*value2)
In summary, I am seeking some ideas of how to store a multidimensional array in a single database table.
What you want is a data serialization method. Don't invent your own, there are plenty already out there. The most obvious candidates are JSON (json_encode) or the PHP specific serialize. XML is also an option, especially if your database may support it natively to some degree.
Have a look at serialize or json_encode
The best decision for you is json_encode.
It has some advantages for json_encode beside serialize for storing in db.
taking smaller size
if you
must modify data manually in db there will be some problems with serialize, because this format stores size of values that has been serialized and modifying this values you must count and modify this params.
SQL (whether mySQL or any other variant) does not support array data types.
The way you are supposed to deal with this kind of data in SQL is to store it across multiple tables.
So in this example, you'd have one table that contains buttonID, buttonName, buttonSuccess, etc fields, and another table that contains buttonInputType and buttonInputValue fields, as well as buttonID to link back to the parent table.
That would be the recommended "relational" way of doing things. The point of doing it this way is that it makes it easier to query the data back out of the DB when the time comes.
There are other options though.
One option would be to use mySQL's enum feature. Since you've got a fixed set of values available for the input type, you could use an enum field for it, which could save you from needing to have an extra table for that.
Another option, of course, is what everyone else has suggested, and simply serialise the data using json_encode() or similar, and store it all in a big text field.
If the data is going to be used as a simple block of data, without any need to ever run a query to examine parts of it, then this can sometimes be the simplest solution. It's not something a database expert would want to see, but from a pragmatic angle, if it does the job then feel free to use it.
However, it's important to be aware of the limitations. By using a serialised solution, you're basically saying "this data doesn't need to be managed in any way at all, so I can't be bothered to do proper database design for it.". And that's fine, as long as you don't need to manage it or search for values within it. If you do, you need to think harder about your DB design, and be wary of taking the 'easy' option.
I've seen some (well-explained) examples where the available results of a live search are found in an xml file. But only a few (badly-explained) ones where the results come from a database. I'm interested in the second case.
One solution could be to prefetch the database data and put them in an xml object and the rest could work the same way. And this is something I can easily implement.
What I'm looking for is for another way, where the user types a letter (e.g. 'c') and the suggestions are generated on the spot (e.g. 'carrot', 'cabbage', 'celery', 'citrus'). Would this be achieved with a call to the database like
"SELECT name FROM vegetables WHERE name LIKE c%"?
And what if the user then presses another letter? (e.g. 'ca', so the recommended results should be 'carrot', 'cabbage'). Every key pressed should initiate a new SELECT? For some reason it doesn't sound like a good solution.
Is there a way to achieve this second method?
You can achieve this by sending ajax requests on every key up function in jquery. In response send back the results in json format so as to display them in a unordered list below the text field. On clicking of the li of this fill the textbox with the value in the text field.
How can I get the values from a html table and pass that to a controller in codeigniter?
I'm passing an array to a view. I walk that array and display its content in a table where the user can alter the table. For example, adding a row, or deleting one, but changing values is a possibility too. But then the user saves the data by pressing the button 'save'.
How do i get the data from the table and pass that to php?
When the "save" button is pressed you trigger a javascript function that uses the DOM to get at the values you want. You "select" a table cell and then use innerhtml to get the string inside it. Using unique html id's on your cells will make this easy. Collect all this data in an array and "send" it to your PHP via an Ajax POST request.
That's one way of going about it. Another way is to use Simplehtmldom where you use PHP instead of JS to get your values. This may be easier / more difficult depending on how good your JS is, but the methods are the same. Simplehtmldom uses a syntax that's quite similar to jquery's and in this case you put the load on the server instead of the client.