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  • Retrieving all objects in code upfront for performance reasons

    - by ming yeow
    How do you folks retrieve all objects in code upfront? I figure you can increase performance if you bundle all the model calls together? This makes for a bigger deal, especially if your DB cannot keep everything in memory def hitDBSeperately { get X users ...code get Y users... code get Z users... code } Versus: def hitDBInSingleCall { get X+Y+Z users code for X code for Y... }

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  • Remove newlines and spaces

    - by Cosmin
    How can I remove newline between <table> .... </table> and add \n after each ex: <table border="0" cellspacing="0" cellpadding="0" width="450" class="descriptiontable"><tr> <td width="50%" valign="top"> <span class="displayb">Model Procesor:</span> Intel Celeron<br><span class="displayb">Frecventa procesor (MHz):</span> 2660<br><span class="displayb">Placa Video:</span> Intel Extreme Graphics 2<br><span class="displayb">Retea integrata:</span> 10/100Mbps, RJ-45<br><span class="displayb">Chipset:</span> Intel 845G<br> </td> <td width="50%" valign="top"> <span class="displayb">Capacitate RAM (MB):</span> 512<br><span class="displayb">Tip RAM:</span> DDR<br> </td> </tr></table> and become : <table border="0" cellspacing="0" cellpadding="0" width="450" class="descriptiontable"><tr><td width="50%" valign="top"><span class="displayb">Model Procesor:</span> Intel Celeron<br><span class="displayb">Frecventa procesor (MHz):</span> 2660<br><span class="displayb">Placa Video:</span> Intel Extreme Graphics 2<br><span class="displayb">Retea integrata:</span> 10/100Mbps, RJ-45<br><span class="displayb">Chipset:</span> Intel 845G<br></td><td width="50%" valign="top"><span class="displayb">Capacitate RAM (MB):</span> 512<br><span class="displayb">Tip RAM:</span> DDR<br></td></tr></table>\n s.

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  • ahow can I resolve Django Error: str' object has no attribute 'autoescape'?

    - by Angelbit
    Hi have tried to create a inclusion tag on Django but don't work and return str' object has no attribute 'autoescape' this is the code of custom tag: from django import template from quotes.models import Quotes register = template.Library() def show_quote(): quote = Quotes.objects.values('quote', 'author').get(id=0) return {'quote': quote['quote']} register.inclusion_tag('quotes.html')(show_quote) EDIT: Quote class from django.db import models class Quotes(models.Model): quote = models.CharField(max_length=255) author = models.CharField(max_length=100) class Meta: db_table = 'quotes' quotes.html <blockquote id="quotes">{{ quote }}</blockquote>

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  • Django save method

    - by Marijus
    So I have a model with a FileField for excel spreadsheet. What I need to do this add another column in this spreadsheet, in each row let user pick from a drop-down list then save it and display it in html. All the picking and uploading will happen through the admin interface. So I have figured out way how to display a spreadsheet in html, however I have no idea how to write this save method. I could really use some hints and tips..

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  • Scaffold is ignoring class file in CakePHP

    - by JoseMarmolejos
    Hi, when using scaffolding on a controller the views render fine and the app even attempts to insert the data; the problem is that the scaffold is completely ignoring the relations I'm defining in my model class, in fact it's ignoring the class entirely as I can delete the file and the controller still scaffolds and render the crud from the table. Has this ever happened to you?

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  • Overriding an ActiveRecord attribute

    - by jspooner
    I have a model with a completed:boolean column that I'd like override so I can add some conditional code. I've never override an ActiveRecord attribute before and wanted to know if the method below is good practice? class Article < ActiveRecord::Base def completed=(b) write_attribute(:completed, b) # IF b is true then do something end end

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  • rails: running a method on create only

    - by bandhunt
    I want to run a paperclip method on create only has_attached_file :file This method doesn't seem to accept the :on = :create that some other rails methods do. I tried: before_create after_create etc, but those didn't work. I also did: if :create How can I test if the controller is using the create method from the model? Thanks!

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  • How can I detect if an iPhone OS device has a proximity sensor?

    - by Batgar
    The docs related to proximity sensing state that if the proximity sensing APIs are used on a device without a proximity sensor (i.e. iPod touch, iPad) they will just return as if the proximity sensor has fired. Aside from checking the [[UIDevice currentDevice].model] string and parsing for "iPhone", "iPod touch", or "iPad" is there a slicker way to determine if a proximity sensor is on a given device?

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  • PHP codinh in real world

    - by user261002
    I know how to write program in PHP and implementation of MVC model. but I really want to practice coding like the coding in real world??? I was wondering is there any specific example or book which can show me the tricks or logic and the way professional programmers consider about coding???

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  • XML - python prints extra lines

    - by horse
    `from xml import xpath from xml.dom import minidom xmldata = minidom.parse('model.xml').documentElement for maks in xpath.Evaluate('/cacti/results/maks/text()', xmldata): print maks.nodeValue ` and I get result: 85603399.14 398673062.66 95785523.81 But I needed to be: 85603399.14 NO SPACE 398673062.66 NO SPACE 95785523.81 Can somebody help me, i new at programing :( ?

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  • How can I override the attribute assignment in an active record object?

    - by ryeguy
    I know you can do this with virtual attributes, but what if the column actually exists? For example, my model has a raw_topic column. When raw_topic is set, I want artist and song_title to be set based off of raw_topic's contents. Ideally, I'd like to override the raw_topic= method, but rails doesn't seem to like that. What's the proper way of doing this? Is a callback the only way?

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  • get renamed file names of multiple upload form [js array] in codeigniter

    - by artmania
    Hi friends, I use codeigniter. I have a multiple image upload form. The code below is working well for uploading, but I also need to save file names to database. How can I get the names in here? I spent hours & hours :/ but could not sort it :/ Appreciate helps!!! uploadform.php echo form_open_multipart('gallery/upload'); <input type="file" name="photo" size="50" /> <input type="file" name="thumb" size="50" /> <input type="submit" value="Upload" /> </form> I have a controller between form view and model load model (of course : )) but didnt post here because of no need. gallery_model.php function multiple_upload($upload_dir = 'uploads/', $config = array()) { /* Upload */ $CI =& get_instance(); $files = array(); if(empty($config)) { $config['upload_path'] = realpath($upload_dir); $config['allowed_types'] = 'gif|jpg|jpeg|jpe|png'; $config['max_size'] = '2048'; } $CI->load->library('upload', $config); $errors = FALSE; foreach($_FILES as $key => $value) { if( ! empty($value['name'])) { if( ! $CI->upload->do_upload($key)) { $data['upload_message'] = $CI->upload->display_errors(ERR_OPEN, ERR_CLOSE); // ERR_OPEN and ERR_CLOSE are error delimiters defined in a config file $CI->load->vars($data); $errors = TRUE; } else { // Build a file array from all uploaded files $files[] = $CI->upload->data(); } } } // There was errors, we have to delete the uploaded files if($errors) { foreach($files as $key => $file) { @unlink($file['full_path']); } } elseif(empty($files) AND empty($data['upload_message'])) { $CI->lang->load('upload'); $data['upload_message'] = ERR_OPEN.$CI->lang->line('upload_no_file_selected').ERR_CLOSE; $CI->load->vars($data); } else { return $files; } /* ------------------------------- Insert to database */ // problem is here, i need file names to add db. // if there is already same names file at the folder, it rename file itself. so in such case, I need renamed file name :/ } }

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  • Nesting forms in CakePHP

    - by Erik
    I am wondering if there's a way in CakePHP to nest multiple models in a form? What I'm trying to accomplish is to make a form for creating Posts that will also contain fields for adding Images (separate model) that will automatically be connected to the created post. Something similar to Ruby on Rails ** accept_nested_attributes_for**.

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  • PHP ORM library based on the Data Mapper pattern

    - by Matthieu
    For a PHP application with a complex domain model, I don't want to use the Active Record pattern, I need instead the Data Mapper pattern (as presented in Zend Framework). Do you know any library that could help me for the ORM part, or else a link to a documentation on "how to do it right" ? Thanks

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  • Should I be using callbacks or should I override attributes?

    - by ryeguy
    What is the more "rails-like"? If I want to modify a model's property when it's set, should I do this: def url=(url) #remove session id self[:url] = url.split('?s=')[0] end or this? before_save do |record| #remove session id record.url = record.url.split('?s=')[0] end Is there any benefit for doing it one way or the other? If so, why? If not, which one is generally more common?

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  • Django 5 star Reviews

    - by firststepofthejourney
    Hello All, I am new to programming and I just jumped in to Django and I need a bit of help. I downloaded the generic reviews model off of Google code and I have no clue how to implement it. Can anyone pass along some guidance on how to make this work with a 5 star ratings system? I would appreciate it. Thanks.

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  • Position of object in database

    - by fl00r
    Hi! I have got model Team and I've got (i.e.) team = Team.first :offset => 20. Now I need to get number of position of my team in db table. I can do it in ruby: Team.all.index team #=> 20 But I am sure that I can write it on SQL and it will be less expensive for me with big tables.

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  • Custom search engine in asp.net mvc and entity framework

    - by Rahat
    Hi, does anyone have any idea how I can get started building a search engine for my asp.net mvc site using entity framework. I plan to build something like: http://www.carsguide.com.au/search/?N=4294962119++492&type=cars there on the left there is a refine search option panel. What's the best approach to design a model for the UI and optimized query with entity framework.

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  • Paging & Sorting grids with ASP.Net MVC

    - by Scott Ivey
    I'm new to MVC, and am not following how you'd do paging and sorting on a grid. I'm used to using the asp.Net GridView control with an ObjectDataSource pointed at objects in our business layer - and in that case the ODS handles all of the paging & sorting using the methods that our ORM generates on the objects. I've looked at using the same ORM with MVC - and things work out fine there - i just loop thru the collections to build the table on the page - but without the ODS to handle the paging & sorting, i'm confused as to how I'd handle that. Would I have a separate controller for the paging and sorting? I'm not sure what the best practices are for this scenario, so if someone can point me in the right direction it would be much appreciated. Edit: Ok, so I understand that I need to roll my own - but where do I start? I've created a CustomerController, and a view that displays a table of customers that looks like below - and I want to sort on FirstName or LastName columns. My Model has a Sort() method on it that'll take a string sort expression in the format that would be used by a GridView/ODS pair. Would I create a new Action on my CustomerController called Sort, and put an ActionLink in my header? <table> <tr> <th> First Name </th> <th> Last Name </th> </tr> <% foreach (var item in Model) { %> <tr> <td> <%= Html.Encode(item.FirstName) %> </td> <td> <%= Html.Encode(item.LastName) %> </td> </tr> <% } %> </table>

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