MaketRandevu/doc/code/js/backend_services.js.html

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<title>JSDoc: Source: backend_services.js</title>
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<h1 class="page-title">Source: backend_services.js</h1>
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<section>
<article>
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<pre class="prettyprint source linenums"><code>/**
* This namespace handles the js functionality of the backend services page.
*
* @namespace BackendServices
*/
var BackendServices = {
/**
* Contains the basic record methods for the page.
*
* @type ServicesHelper|CategoriesHelper
*/
helper: {},
/**
* Default initialize method of the page.
*
* @param {bool} bindEventHandlers (OPTIONAL) Determines whether to bind the
* default event handlers (default: true).
*/
initialize: function(bindEventHandlers) {
if (bindEventHandlers === undefined) bindEventHandlers = true;
// Fill available service categories listbox.
$.each(GlobalVariables.categories, function(index, category) {
var option = new Option(category.name, category.id);
$('#service-category').append(option);
});
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$('#service-category').append(new Option('- ' + EALang['no_category'] + ' -', null)).val('null');
$('#service-duration').spinner({
'min': 0,
'disabled': true //default
});
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// Instantiate helper object (service helper by default).
BackendServices.helper = new ServicesHelper();
BackendServices.helper.resetForm();
BackendServices.helper.filter('');
$('#filter-services .results').jScrollPane();
$('#filter-categories .results').jScrollPane();
if (bindEventHandlers) BackendServices.bindEventHandlers();
},
/**
* Binds the default event handlers of the backend services page. Do not use this method
* if you include the "BackendServices" namespace on another page.
*/
bindEventHandlers: function() {
/**
* Event: Page Tab Button "Click"
*
* Changes the displayed tab.
*/
$('.tab').click(function() {
$(this).parent().find('.active').removeClass('active');
$(this).addClass('active');
$('.tab-content').hide();
if ($(this).hasClass('services-tab')) { // display services tab
$('#services').show();
BackendServices.helper = new ServicesHelper();
} else if ($(this).hasClass('categories-tab')) { // display categories tab
$('#categories').show();
BackendServices.helper = new CategoriesHelper();
}
BackendServices.helper.resetForm();
BackendServices.helper.filter('');
$('.filter-key').val('');
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Backend.placeFooterToBottom();
});
ServicesHelper.prototype.bindEventHandlers();
CategoriesHelper.prototype.bindEventHandlers();
},
/**
* Update the service category listbox. Use this method every time a change is made
* to the service categories db table.
*/
updateAvailableCategories: function() {
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var postUrl = GlobalVariables.baseUrl + '/backend_api/ajax_filter_service_categories';
var postData = { 'key': '' };
$.post(postUrl, postData, function(response) {
///////////////////////////////////////////////////////////////
console.log('Update Available Categories Response:', response);
///////////////////////////////////////////////////////////////
if (!GeneralFunctions.handleAjaxExceptions(response)) return;
GlobalVariables.categories = response;
var $select = $('#service-category');
$select.empty();
$.each(response, function(index, category) {
var option = new Option(category.name, category.id);
$select.append(option);
});
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$select.append(new Option('- ' + EALang['no_category'] + ' -', null)).val('null');
}, 'json');
}
};
/**
* This class contains the methods that will be used by the "Services" tab of the page.
* @class ServicesHelper
*/
var ServicesHelper = function() {
this.filterResults = {};
};
ServicesHelper.prototype.bindEventHandlers = function() {
/**
* Event: Filter Services Form "Submit"
*/
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$('#filter-services form').submit(function(event) {
var key = $('#filter-services .key').val();
$('#filter-services .selected-row').removeClass('selected-row');
BackendServices.helper.resetForm();
BackendServices.helper.filter(key);
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return false;
});
/**
* Event: Filter Service Cancel Button "Click"
*/
$('#filter-services .clear').click(function() {
$('#filter-services .key').val('');
BackendServices.helper.filter('');
});
/**
* Event: Filter Service Row "Click"
*
* Display the selected service data to the user.
*/
$(document).on('click', '.service-row', function() {
if ($('#filter-services .filter').prop('disabled')) {
$('#filter-services .results').css('color', '#AAA');
return; // exit because we are on edit mode
}
var serviceId = $(this).attr('data-id');
var service = {};
$.each(BackendServices.helper.filterResults, function(index, item) {
if (item.id === serviceId) {
service = item;
return false;
}
});
BackendServices.helper.display(service);
$('#filter-services .selected-row').removeClass('selected-row');
$(this).addClass('selected-row');
$('#edit-service, #delete-service').prop('disabled', false);
});
/**
* Event: Add New Service Button "Click"
*/
$('#add-service').click(function() {
BackendServices.helper.resetForm();
$('#services .add-edit-delete-group').hide();
$('#services .save-cancel-group').show();
$('#services .details').find('input, textarea').prop('readonly', false);
$('#services .details').find('select').prop('disabled', false);
$('#service-duration').spinner('enable');
$('#filter-services button').prop('disabled', true);
$('#filter-services .results').css('color', '#AAA');
});
/**
* Event: Cancel Service Button "Click"
*
* Cancel add or edit of a service record.
*/
$('#cancel-service').click(function() {
var id = $('#service-id').val();
BackendServices.helper.resetForm();
if (id != '') {
BackendServices.helper.select(id, true);
}
});
/**
* Event: Save Service Button "Click"
*/
$('#save-service').click(function() {
var service = {
'name': $('#service-name').val(),
'duration': $('#service-duration').val(),
'price': $('#service-price').val(),
'currency': $('#service-currency').val(),
'description': $('#service-description').val()
};
if ($('#service-category').val() !== 'null') {
service.id_service_categories = $('#service-category').val();
} else {
service.id_service_categories = null;
}
if ($('#service-id').val() !== '') {
service.id = $('#service-id').val();
}
if (!BackendServices.helper.validate(service)) return;
BackendServices.helper.save(service);
});
/**
* Event: Edit Service Button "Click"
*/
$('#edit-service').click(function() {
$('#services .add-edit-delete-group').hide();
$('#services .save-cancel-group').show();
$('#services .details').find('input, textarea').prop('readonly', false);
$('#services .details select').prop('disabled', false);
$('#service-duration').spinner('enable');
$('#filter-services button').prop('disabled', true);
$('#filter-services .results').css('color', '#AAA');
});
/**
* Event: Delete Service Button "Click"
*/
$('#delete-service').click(function() {
var serviceId = $('#service-id').val();
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var messageBtns = {};
messageBtns[EALang['delete']] = function() {
BackendServices.helper.delete(serviceId);
$('#message_box').dialog('close');
};
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messageBtns[EALang['cancel']] = function() {
$('#message_box').dialog('close');
};
GeneralFunctions.displayMessageBox(EALang['delete_service'],
EALang['delete_record_prompt'], messageBtns);
});
};
/**
* Save service record to database.
*
* @param {object} service Contains the service record data. If an 'id' value is provided
* then the update operation is going to be executed.
*/
ServicesHelper.prototype.save = function(service) {
////////////////////////////////////////////////
//console.log('Service data to save:', service);
////////////////////////////////////////////////
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var postUrl = GlobalVariables.baseUrl + '/backend_api/ajax_save_service';
var postData = { 'service': JSON.stringify(service) };
$.post(postUrl, postData, function(response) {
//////////////////////////////////////////////////
//console.log('Save Service Response:', response);
//////////////////////////////////////////////////
if (!GeneralFunctions.handleAjaxExceptions(response)) return;
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Backend.displayNotification(EALang['service_saved']);
BackendServices.helper.resetForm();
$('#filter-services .key').val('');
BackendServices.helper.filter('', response.id, true);
}, 'json');
};
/**
* Delete a service record from database.
*
* @param {numeric} id Record id to be deleted.
*/
ServicesHelper.prototype.delete = function(id) {
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var postUrl = GlobalVariables.baseUrl + '/backend_api/ajax_delete_service';
var postData = { 'service_id': id };
$.post(postUrl, postData, function(response) {
////////////////////////////////////////////////////
//console.log('Delete service response:', response);
////////////////////////////////////////////////////
if (!GeneralFunctions.handleAjaxExceptions(response)) return;
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Backend.displayNotification(EALang['service_deleted']);
BackendServices.helper.resetForm();
BackendServices.helper.filter($('#filter-services .key').val());
}, 'json');
};
/**
* Validates a service record.
*
* @param {object} service Contains the service data.
* @returns {bool} Returns the validation result.
*/
ServicesHelper.prototype.validate = function(service) {
$('#services .required').css('border', '');
try {
// validate required fields.
var missingRequired = false;
$('#services .required').each(function() {
if ($(this).val() == '' || $(this).val() == undefined) {
$(this).css('border', '2px solid red');
missingRequired = true;
}
});
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if (missingRequired)
throw EALang['fields_are_required'];
return true;
} catch(exc) {
return false;
}
};
/**
* Resets the service tab form back to its initial state.
*/
ServicesHelper.prototype.resetForm = function() {
$('#services .details').find('input, textarea').val('');
$('#service-category').val('null');
$('#services .add-edit-delete-group').show();
$('#services .save-cancel-group').hide();
$('#edit-service, #delete-service').prop('disabled', true);
$('#services .details').find('input, textarea').prop('readonly', true);
$('#service-category').prop('disabled', true);
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$('#service-duration').spinner('disable');
$('#filter-services .selected-row').removeClass('selected-row');
$('#filter-services button').prop('disabled', false);
$('#filter-services .results').css('color', '');
};
/**
* Display a service record into the service form.
*
* @param {object} service Contains the service record data.
*/
ServicesHelper.prototype.display = function(service) {
$('#service-id').val(service.id);
$('#service-name').val(service.name);
$('#service-duration').val(service.duration);
$('#service-price').val(service.price);
$('#service-currency').val(service.currency);
$('#service-description').val(service.description);
var categoryId = (service.id_service_categories != null) ? service.id_service_categories : 'null';
$('#service-category').val(categoryId);
};
/**
* Filters service records depending a string key.
*
* @param {string} key This is used to filter the service records of the database.
* @param {numeric} selectId (OPTIONAL = undefined) If set then after the filter
* operation the record with this id will be selected (but not displayed).
* @param {bool} display (OPTIONAL = false) If true then the selected record will
* be displayed on the form.
*/
ServicesHelper.prototype.filter = function(key, selectId, display) {
if (display == undefined) display = false;
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var postUrl = GlobalVariables.baseUrl + '/backend_api/ajax_filter_services';
var postData = { 'key': key };
$.post(postUrl, postData, function(response) {
/////////////////////////////////////////////////////
//console.log('Filter services response:', response);
/////////////////////////////////////////////////////
if (!GeneralFunctions.handleAjaxExceptions(response)) return;
BackendServices.helper.filterResults = response;
$('#filter-services .results').data('jsp').destroy();
$('#filter-services .results').html('');
$.each(response, function(index, service) {
var html = ServicesHelper.prototype.getFilterHtml(service);
$('#filter-services .results').append(html);
});
$('#filter-services .results').jScrollPane({ mouseWheelSpeed: 70 });
if (response.length == 0) {
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$('#filter-services .results').html('&lt;em>' + EALang['no_records_found'] + '&lt;/em>');
}
if (selectId != undefined) {
BackendServices.helper.select(selectId, display);
}
}, 'json');
};
/**
* Get a service row html code that is going to be displayed on the filter results list.
*
* @param {object} service Contains the service record data.
* @returns {string} The html code that represents the record on the filter results list.
*/
ServicesHelper.prototype.getFilterHtml = function(service) {
var html =
'&lt;div class="service-row" data-id="' + service.id + '">' +
'&lt;strong>' + service.name + '&lt;/strong>&lt;br>' +
service.duration + ' min - ' +
service.price + ' ' + service.currency + '&lt;br>' +
'&lt;/div>&lt;hr>';
return html;
};
/**
* Select a specific record from the current filter results. If the service id does not exist
* in the list then no record will be selected.
*
* @param {numeric} id The record id to be selected from the filter results.
* @param {bool} display (OPTIONAL = false) If true then the method will display the record
* on the form.
*/
ServicesHelper.prototype.select = function(id, display) {
if (display == undefined) display = false;
$('#filter-services .selected-row').removeClass('selected-row');
$('#filter-services .service-row').each(function() {
if ($(this).attr('data-id') == id) {
$(this).addClass('selected-row');
return false;
}
});
if (display) {
$.each(BackendServices.helper.filterResults, function(index, service) {
if (service.id == id) {
BackendServices.helper.display(service);
$('#edit-service, #delete-service').prop('disabled', false);
return false;
}
});
}
};
/**
* This class contains the core method implementations that belong to the categories tab
* of the backend services page.
*
* @class CategoriesHelper
*/
var CategoriesHelper = function() {
this.filterResults = {};
};
/**
* Binds the default event handlers of the categories tab.
*/
CategoriesHelper.prototype.bindEventHandlers = function() {
/**
* Event: Filter Categories Cancel Button "Click"
*/
$('#filter-categories .clear').click(function() {
$('#filter-categories .key').val('');
BackendServices.helper.filter('');
});
/**
* Event: Filter Categories Form "Submit"
*/
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$('#filter-categories form').submit(function(event) {
var key = $('#filter-categories .key').val();
$('.selected-row').removeClass('selected-row');
BackendServices.helper.resetForm();
BackendServices.helper.filter(key);
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return false;
});
/**
* Event: Filter Categories Row "Click"
*
* Displays the selected row data on the right side of the page.
*/
$(document).on('click', '.category-row', function() {
if ($('#filter-categories .filter').prop('disabled')) {
$('#filter-categories .results').css('color', '#AAA');
return; // exit because we are on edit mode
}
var categoryId = $(this).attr('data-id');
var category = {};
$.each(BackendServices.helper.filterResults, function(index, item) {
if (item.id === categoryId) {
category = item;
return false;
}
});
BackendServices.helper.display(category);
$('#filter-categories .selected-row').removeClass('selected-row');
$(this).addClass('selected-row');
$('#edit-category, #delete-category').prop('disabled', false);
});
/**
* Event: Add Category Button "Click"
*/
$('#add-category').click(function() {
BackendServices.helper.resetForm();
$('#categories .add-edit-delete-group').hide();
$('#categories .save-cancel-group').show();
$('#categories .details').find('input, textarea').prop('readonly', false);
$('#filter-categories button').prop('disabled', true);
$('#filter-categories .results').css('color', '#AAA');
});
/**
* Event: Edit Category Button "Click"
*/
$('#edit-category').click(function() {
$('#categories .add-edit-delete-group').hide();
$('#categories .save-cancel-group').show();
$('#categories .details').find('input, textarea').prop('readonly', false);
$('#filter-categories button').prop('disabled', true);
$('#filter-categories .results').css('color', '#AAA');
});
/**
* Event: Delete Category Button "Click"
*/
$('#delete-category').click(function() {
var categoryId = $('#category-id').val();
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var messageBtns = {};
messageBtns[EALang['delete']] = function() {
BackendServices.helper.delete(categoryId);
$('#message_box').dialog('close');
};
messageBtns[EALang['cancel']] = function() {
$('#message_box').dialog('close');
};
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GeneralFunctions.displayMessageBox(EALang['delete_category'],
EALang['delete_record_prompt'], messageBtns);
});
/**
* Event: Categories Save Button "Click"
*/
$('#save-category').click(function() {
var category = {
'name': $('#category-name').val(),
'description': $('#category-description').val()
};
if ($('#category-id').val() !== '') {
category.id = $('#category-id').val();
}
if (!BackendServices.helper.validate(category)) return;
BackendServices.helper.save(category);
});
/**
* Event: Cancel Category Button "Click"
*/
$('#cancel-category').click(function() {
var id = $('#category-id').val();
BackendServices.helper.resetForm();
if (id != '') {
BackendServices.helper.select(id, true);
}
});
};
/**
* Filter service categories records.
*
* @param {string} key This key string is used to filter the category records.
* @param {numeric} selectId (OPTIONAL = undefined) If set then after the filter
* operation the record with the given id will be selected (but not displayed).
* @param {bool} display (OPTIONAL = false) If true then the selected record will
* be displayed on the form.
*/
CategoriesHelper.prototype.filter = function(key, selectId, display) {
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var postUrl = GlobalVariables.baseUrl + '/backend_api/ajax_filter_service_categories';
var postData = { 'key': key };
$.post(postUrl, postData, function(response) {
///////////////////////////////////////////////////////
console.log('Filter Categories Response:', response);
///////////////////////////////////////////////////////
if (!GeneralFunctions.handleAjaxExceptions(response)) return;
BackendServices.helper.filterResults = response;
$('#filter-categories .results').data('jsp').destroy();
$('#filter-categories .results').html('');
$.each(response, function(index, category) {
var html = BackendServices.helper.getFilterHtml(category);
$('#filter-categories .results').append(html);
});
$('#filter-categories .results').jScrollPane({ mouseWheelSpeed: 70 });
if (response.length == 0) {
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$('#filter-categories .results').html('&lt;em>' + EALang['no_records_found'] + '&lt;/em>');
}
if (selectId != undefined) {
BackendServices.helper.select(selectId, display);
}
}, 'json');
};
/**
* Save a category record to the database (via ajax post).
*
* @param {object} category Contains the category data.
*/
CategoriesHelper.prototype.save = function(category) {
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var postUrl = GlobalVariables.baseUrl + '/backend_api/ajax_save_service_category';
var postData = { 'category': JSON.stringify(category) };
$.post(postUrl, postData, function(response) {
///////////////////////////////////////////////////////////
console.log('Save Service Category Response:', response);
///////////////////////////////////////////////////////////
if (!GeneralFunctions.handleAjaxExceptions(response)) return;
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Backend.displayNotification(EALang['service_category_saved']);
BackendServices.helper.resetForm();
$('#filter-categories .key').val('');
BackendServices.helper.filter('', response.id, true);
BackendServices.updateAvailableCategories();
}, 'json');
};
/**
* Delete category record.
*
* @param {int} id Record id to be deleted.
*/
CategoriesHelper.prototype.delete = function(id) {
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var postUrl = GlobalVariables.baseUrl + '/backend_api/ajax_delete_service_category';
var postData = { 'category_id': id };
$.post(postUrl, postData, function(response) {
////////////////////////////////////////////////////
console.log('Delete category response:', response);
////////////////////////////////////////////////////
if (!GeneralFunctions.handleAjaxExceptions(response)) return;
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Backend.displayNotification(EALang['service_category_deleted']);
BackendServices.helper.resetForm();
BackendServices.helper.filter($('#filter-categories .key').val());
BackendServices.updateAvailableCategories();
}, 'json');
};
/**
* Display a category record on the form.
*
* @param {object} category Contains the category data.
*/
CategoriesHelper.prototype.display = function(category) {
$('#category-id').val(category.id);
$('#category-name').val(category.name);
$('#category-description').val(category.description);
};
/**
* Validate category data before save (insert or update).
*
* @param {object} category Contains the category data.
*/
CategoriesHelper.prototype.validate = function(category) {
$('#categories .details').find('input, textarea').css('border', '');
try {
var missingRequired = false;
$('#categories .required').each(function() {
if ($(this).val() == '' || $(this).val() == undefined) {
$(this).css('border', '2px solid red');
missingRequired = true;
}
});
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if (missingRequired) throw EALang['fields_are_required'];
return true;
} catch(exc) {
console.log('Category Record Validation Exc:', exc);
return false;
}
};
/**
* Bring the category form back to its initial state.
*/
CategoriesHelper.prototype.resetForm = function() {
$('#categories .add-edit-delete-group').show();
$('#categories .save-cancel-group').hide();
$('#categories .details').find('input, textarea').val('');
$('#categories .details').find('input, textarea').prop('readonly', true);
$('#edit-category, #delete-category').prop('disabled', true);
$('#filter-categories .selected-row').removeClass('selected-row');
$('#filter-categories .results').css('color', '');
$('#filter-categories button').prop('disabled', false);
};
/**
* Get the filter results row html code.
*
* @param {object} category Contains the category data.
* @return {string} Returns the record html code.
*/
CategoriesHelper.prototype.getFilterHtml = function(category) {
var html =
'&lt;div class="category-row" data-id="' + category.id + '">' +
'&lt;strong>' + category.name + '&lt;/strong>' +
'&lt;/div>&lt;hr>';
return html;
};
/**
* Select a specific record from the current filter results. If the category id does not exist
* in the list then no record will be selected.
*
* @param {numeric} id The record id to be selected from the filter results.
* @param {bool} display (OPTIONAL = false) If true then the method will display the record
* on the form.
*/
CategoriesHelper.prototype.select = function(id, display) {
if (display == undefined) display = false;
$('#filter-categories .selected-row').removeClass('selected-row');
$('#filter-categories .category-row').each(function() {
if ($(this).attr('data-id') == id) {
$(this).addClass('selected-row');
return false;
}
});
if (display) {
$.each(BackendServices.helper.filterResults, function(index, category) {
if (category.id == id) {
BackendServices.helper.display(category);
$('#edit-category, #delete-category').prop('disabled', false);
return false;
}
});
}
};</code></pre>
</article>
</section>
</div>
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