Trying to paginate DB::select('SHOW TABLES')->paginate(1); but got error Call to a member function paginate() on array. How can I get all the tables and paginate them?
Since you can use \DB:select for your query, it will response the array instead of the collection. So, you can't make the pagination from it.
You can use LengthAwarePaginator for this case, please see the following code:
$sql .= 'SHOW TABLES LIMIT ' . $offset . ', ' . $limit;
$result = \DB::select(\DB::raw($sql));
$myPaginator = new \Illuminate\Pagination\LengthAwarePaginator($result, $data['count'], $limit, $page, ['path' => action('MyController#index')]);
$data['result'] = $result;
Related
I have an issue where when I create a real-time subscription I get duplicate notifications from different Instagram IP addresses. I have it set up so that when I get a notification, I send a request for latest updates using the min_tag_id setting. I store that in my db to use it for the next request. I don't always get duplicates, but when I do, everything about the notification is the same (time, object,changed_aspect), except I can tell they are different from my debugging output which lists two almost identical requests... the only differing info being a different IP address and the REQUEST_TIME_FLOAT is different by about 1/10th of a second. They even have the same HTTP_X_HUB_SIGNATURE value.
My general algorithm is:
process_subscription_update($data){
# get old min_id
$min_tag_id = mysqli_fetch_object(mysqli_query($dbconnecti,sprintf("SELECT instagram_min_id+0 as instaid FROM xxxx WHERE xxxx=%d",$_GET['xxxx'])));
$min_id = $min_tag_id->instaid;
# make api call
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, 'https://api.instagram.com/v1/tags/'.$_GET['tag'].'/media/recent?client_id=xxxx&min_tag_id='.$min_id.($min_id==0?'&count=1':''));
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
$result = curl_exec($ch);
curl_close($ch);
$i = json_decode($result);
if ($min_id == $i->pagination->min_tag_id) { exit; }
# write new min_id to db
record_min_id($i->pagination->min_tag_id);
$data2 = $i->data;
foreach($data2 as $d) {
process_instagram($d);
}
// debugging output: ****************
$file = file_get_contents($_SERVER['DOCUMENT_ROOT'].'instagram/updates.txt');
$foo = "\n";
foreach($_SERVER as $key_name => $key_value) {
$foo .= $key_name . " = " . $key_value . "\n";
}
$fulldata = $file . "\n\n\n" . $result . "\n min_id = " . $min_id . $foo;
$fulldata .= "\nTIME:".$data[0]->time;
$fulldata .= "\nOBJECT:".$data[0]->object;
$fulldata .= "\nCHANGED_ASPECT:".$data[0]->changed_aspect;
file_put_contents($_SERVER['DOCUMENT_ROOT'].'instagram/updates.txt', $fulldata);
// end debugging output *************
}
I'd like to avoid checking if the instagram message id already exists in my db within the process_instagram function, and with the duplicates only coming 1/10th of a second apart, I don't know if that would work anyway.
Anybody else experience this and/or have a solution?
I solved this. I don't think there is anything I can do about receiving the duplicate notifications. So, when writing the Instagram to my db, I have a field for the Instagram id and put a unique constraint on the field. After doing the mysqli INSERT, I check to see if the errno = 1062, and if it does, I exit.
mysqli_query($dbconnecti,"INSERT INTO xxx (foo, etc, instagram_id ...")
if ($dbconnecti->errno==1062) { exit; }
...
// more script runs here if we don't have a duplicate.
In the following example, can any folks show me how to code the binding part as I select all fields from the table
$stmt = $mysqli_conn->stmt_init();
if ($stmt->prepare("SELECT * FROM books")) {
$stmt->execute();
$stmt->bind_result( **WHAT DO I PUT HERE** );
$stmt->close();
}
In bind_result, you put in the variables where you want to fetch the data into, instead of using an array returned otherwise.
$stmt->bind_result($col1, $col2, $col3, $col4);
while($stmt->fetch_assoc())
echo "$col1 $col2 $col3 $col4";
Alternatively, if you don't want to bind the result
while($resultArray = $stmt->fetch_assoc()) {
echo "$resultArray[columnName1] $resultArray[columnName2] ...";
}
I'm using Net::Amazon::EC2 to get some information about my instances.
I get all of the tags associated with an instance with:
my $tags = $ec2->describe_tags("Filter.Name" => "resource-id", "Filter.Value" => $instance_id);
According to the docs, this returns an array ref of DescribeTag objects.
I can iterate through the results:
foreach my $tag (#$tags) {
print $tag->key . " = " . $tag->value . "\n";
}
Is there a way I can get a tag with a specific key?
You could probably grep through them. Not very elegant, but I don't know the module you are using.
my #filtered_tags = grep { $_->key eq 'specific' } #$tags;
This is more a question for XPath syntax than anything else.
I have multiple product pages on a site that have multiple products on each product pages. Each product has a unique ID for the add-to-cart button. I'm trying to return all of the unique ID's so that I can add a couple of the products to the bag. Searching with XPath seems to be the correct solution for this. I have the following code for querying the HTML with XPath and returning the unique ID's:
$XPATH_COUNT = $sel->get_xpath_count("//div[\#class='quick-info-link']/a");
#my_array;
$my_array[0] = $sel->get_attribute("//div[\#class='quick-info-link']/a/\#id");
print $my_array[0];
$count = 0;
while( $count < $XPATH_COUNT )
{
$arrayCount=0;
$a = "//";
foreach( #my_array )
{
$tmp = "a[\#id!='" . $my_array[$arrayCount] . "' and ";
$b .= $tmp;
$d .= "]";
$arrayCount++;
}
$c = "img[\#alt='Quick Shop']";
$e = $c . $d . "/\#id";
$xpath_query = $a . $b . $e;
$my_array[$count] = $sel->get_attribute($xpath_query);
$count++;
}
The output of the first run of this is an XPath query that looks like this:
//a[#id!='quickview-link-PROD7029' and img[#alt='Quick Shop']]/#id
Which correctly returns quickview-link-PROD6945. The second run produces this:
//a[#id!='quickview-link-PROD7029' and a[#id!='quickview-link-PROD6945' and img[#alt='Quick Shop']]]/#id
Which throws an error in my SeleniumRC terminal window of ERROR: Element [..xpath query..] not found on session.
I am aware of the possible use of indexes (i.e. adding an [i] to the end of the XPath query) to access elements on the page, however this isn't something that has worked for me in Selenium.
Any help would be great. Thanks for your time,
Steve
//a[#id!='quickview-link-PROD7029'
and a[#id!='quickview-link-PROD6945' and
img[#alt='Quick Shop']
]
]/#id
Which throws an error in my SeleniumRC
terminal window of ERROR: Element
[..xpath query..] not found on session
It would greatly help if you provide the XML document on which the XPath expression is applied and explain which node(s) you want to select.
Without this necessary information:
The most obvious reason for this problem is that the above expression is looking for a elements that have an a child with some property.
Usually an a element doesn't have any a children.
What you really want is something like:
//a[#id != 'quickview-link-PROD7029'
and
#id != 'quickview-link-PROD6945' and img[#alt='Quick Shop']
]/#id
This can be simplified a bit:
//a[img[#alt='Quick Shop']/#id
[not(. = 'quickview-link-PROD7029'
or
. = 'quickview-link-PROD6945'
)
]
Following the sample code on http://framework.zend.com/manual/en/zend.db.profiler.html I have set up db profiling of my Zend Framework app.
application.ini:
db.profiler.enabled = true
View Helper:
$totalTime = $profiler->getTotalElapsedSecs();
$queryCount = $profiler->getTotalNumQueries();
$longestTime = 0;
$longestQuery = null;
foreach ($profiler->getQueryProfiles() as $query) {
if ($query->getElapsedSecs() > $longestTime) {
$longestTime = $query->getElapsedSecs();
$longestQuery = $query->getQuery();
}
}
echo 'Executed ' . $queryCount . ' queries in ' . $totalTime . ' seconds' . "\n";
echo 'Average query length: ' . $totalTime / $queryCount . ' seconds' . "\n";
echo 'Queries per second: ' . $queryCount / $totalTime . "\n";
echo 'Longest query length: ' . $longestTime . "\n";
echo "Longest query: \n" . $longestQuery . "\n";
It works fine for select/insert/update/delete queries.
But I cannot find anyway to get the profiler to show the time taken to initiate the actual db connection, despite the documenation implying that it does log this.
I suspect that Zend_Db simply does not log the connection to the db with the profiler.
Does anyone know what is going on here?
I am using the Oracle database adapter, and ZF 1.10.1
UPDATE:
I understand it is possible to filter the profiler output, such that it will only show certain query types, e.g. select/insert/update. There also appears to be an option to filter just the connection records:
$profiler->setFilterQueryType(Zend_Db_Profiler::CONNECT);
However, my problem is that the profiler is not logging the connections to begin with, so this filter does nothing.
I know this for a fact, because if I print the profiler object, it contains data for many different queries - but no data for the connection queries:
print_r($profiler);
//output
Zend_Db_Profiler Object
(
[_queryProfiles:protected] => Array
(
[0] => Zend_Db_Profiler_Query Object
(
[_query:protected] => select * from table1
[_queryType:protected] => 32
[_startedMicrotime:protected] => 1268104035.3465
[_endedMicrotime:protected] => 1268104035.3855
[_boundParams:protected] => Array
(
)
)
[1] => Zend_Db_Profiler_Query Object
(
[_query:protected] => select * from table2
[_queryType:protected] => 32
[_startedMicrotime:protected] => 1268104035.3882
[_endedMicrotime:protected] => 1268104035.419
[_boundParams:protected] => Array
(
)
)
)
[_enabled:protected] => 1
[_filterElapsedSecs:protected] =>
[_filterTypes:protected] =>
)
Am I doing something wrong - or has logging of connections just not been added to Zend Framework yet?
The profiler 'bundles' connection and other operations in with the general queries.
There's three ways you might examine the connection specifically:
Set a filter on the profiler during setup:
$profiler->setFilterQueryType(**Zend_Db_Profiler::CONNECT**);
Then the resultant profiles will only include 'connect' operations.
Specify a query type when you retrieve the Query Profiles:
$profiles = $profiler->getQueryProfiles(**Zend_Db_Profiler::CONNECT**);
Examine the query objects directly during the iteration:
foreach($profiler->getQueryProfiles() as $query) {
if ($query->getQueryType() == Zend_Db_Profiler::CONNECT &&
$query->getElapsedSecs() > $longestConnectionTime) {
$longestConnectionTime = $query->getElapsedSecs();
}
}
You'll not find great detail in there, it's logged just as a 'connect' operation along with the time taken.