Php: Group and add missed field - php

Question

I have in a array a table like this:
cid plugin lang_id name father
1 Newspage 1 Actualidad 1
1 Newspage 2 News 1
2 Newspage 1 Tecnologia 1
2 Newspage 2 Tech 1
3 Newspage 1 Deportes 1
3 Newspage 2 Sports 1
4 Newspage 1 Ocio 1
In this example there are two languages (1:Spanish and 2:English) but admin can add more languages
I want do a "modify category" section and group it by CID with input boxes for each language if language its missed i want display a empty input for add the missed language.
Something like this:
http://i.imgur.com/fGCUgKc.png
My actual bad code its this:
$content = "<div class='catlist'>";
$content .= "<p>{$LANGDATA['L_NEWS_MODIFIED_CATS']}</p>";
$query = $db->select_all("categories", array ("plugin" => "Newspage", "lang_id" => 1));
while ($cat_grouped = $db->fetch($query)) {
$content .= "<form id='cat_mod' method='post' action=''>";
$content .= "<div>";
foreach ($langs as $lang) {
if ($lang['lang_id'] == $cat_grouped['lang_id']) {
$content .= "<label>{$lang['lang_name']}</label> <input type='text' name='{$lang['lang_id']}' value='{$cat_grouped['name']}' />";
} else {
$query2 = $db->select_all("categories", array ("plugin" => "Newspage", "cid" => "{$cat_grouped['cid']}", "lang_id" => "{$lang['lang_id']}"));
if($db->num_rows($query2) <= 0) {
$content .= "<label>{$lang['lang_name']}</label> <input type='text' name='{$lang['lang_id']}' value='' />";
} else {
$other_lang_cat = $db->fetch($query2);
$content .= "<label>{$lang['lang_name']}</label> <input type='text' name='{$lang['lang_id']}' value='{$other_lang_cat['name']}' />";
}
}
}
$content .= "<input type='hidden' name='cid' value='{$cat_grouped['cid']}' />";
$content .= "<input type='submit' name='ModCatSubmit' value='{$LANGDATA['L_NEWS_MODIFY']}' />";
$content .= "</div></form>";
}
$content .= "</div>";
This:
$db->select_all(...);
mean
$db->select_all("table", $WHERE, ...)
I want to retrieve all content in one query and do the work in php
My actual code its clearly very bad and assumed lang_id=1 exists for each entry and do few query's huh!
My old code use "GROUP BY cid" for the first query and not need to use "lang_id=1" but after a system upgrade that line give the error:
reported: Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column
and not want to use again that.
any idea the best way for do that?

Answer 1

I don't know what your database library is, so I'm writing a pseudo like code.
First, I would use a pagination to limit the database queries, for example 10/20 phrases for each page. So the query would be:
SELECT * FROM language_phrases WHERE cid IN (
SELECT DISTINCT cid FROM language_phrases WHERE plugin = 'Newspage'
LIMIT 0,10
)
then I would use the data from database first to get the cid values:
$cid = array();
$strings = array();
while($row = $db->fetch($result))
{
if(!in_array($cid,$row["cid"]))
{
$cid[] = $row["cid"];
}
$strings[]= array(
"cid" => $row["cid"],
"lang_id" => $row["lang_id"],
"name" => $row["name"],
"father" => $row["father"]
);
}
Then I would have the table and the distinct cid's in this page in my buffer. Then PHP will do the rest:
foreach($cid as $idx=>$key)
{
$values = array_filter($strings,function($d) use ($key) {
return $d["cid"] == $key;
});
// build the form with the $values array.
}

Answer 2

This problem give a headache but i made another version that work and only one query.
I will check later the Taha Paksu version/way (thanks!)
$content = "<div class='catlist'>";
$content .= "<p>{$LANGDATA['L_NEWS_MODIFIED_CATS']}</p>";
$query = $db->select_all("categories", array ("plugin" => "Newspage"), "ORDER BY cid");
$cats = [];
$catsids = [];
while ($cats_row = $db->fetch($query)) {
$cats[] = $cats_row;
$catsids[] = $cats_row['cid'];
}
$catsids = array_unique($catsids);
$foundit = 0;
foreach ($catsids as $catid) {
$content .= "<form id='cat_mod' method='post' action=''>";
$content .= "<div>";
foreach ($langs as $lang) {
foreach ($cats as $cat) {
if (($catid == $cat['cid']) && ($cat['lang_id'] == $lang['lang_id'])) {
$content .= "<label>{$lang['lang_name']}</label> <input type='text' name='{$lang['lang_id']}' value='{$cat['name']}' />";
$foundit = 1;
}
}
if ($foundit == 0) {
$content .= "<label>{$lang['lang_name']}</label> <input type='text' name='{$lang['lang_id']}' value='' />";
}
$foundit = 0;
}
$content .= "<input type='hidden' name='cid' value='$catid' />";
$content .= "<input type='submit' name='ModCatSubmit' value='{$LANGDATA['L_NEWS_MODIFY']}' />";
$content .= "</div></form>";
}