scopes

问题 I am struggling to find a suitable solution for what should be a simple task. Essentially I have a category model which has many posts . The post belongs to the category . I am displaying categories as part of a search form as well as a number of other places and do not want to display categories that have no associated posts. That seems kind of pointless. I managed to solve this problem by adding the following method to my category model. # Check if Category has associated results def self

问题 I often use variables which are declared in the script scope to avoid problems with functions and their scopes. I am declaring these variables like this: New-Variable -Name test -Option AllScope -Value $null ... or sometimes I switch existing variables like this to use them comprehensively: $script:test = $test When I want to clear them I either use this: Clear-Variable test -Scope Script ... or I simply use this: $test = $null Is there a difference? What should I prefer and why? 回答1: From

问题 I often use variables which are declared in the script scope to avoid problems with functions and their scopes. I am declaring these variables like this: New-Variable -Name test -Option AllScope -Value $null ... or sometimes I switch existing variables like this to use them comprehensively: $script:test = $test When I want to clear them I either use this: Clear-Variable test -Scope Script ... or I simply use this: $test = $null Is there a difference? What should I prefer and why? 回答1: From

问题 Is it possible to add a global scope after the model has already passed the constructor? I would like to catch an event (for example creating ) and attach a global scope only if the model is creating. So far I've done: Event::listen('eloquent.creating*', function ($event, $model) { /** * @var Model $eloquentModel */ $eloquentModel = $model[0]; $eloquentModel->addGlobalScope(new AuthorizationScope($event)); }); The scope constructor is called, but the apply method from it is never fired

问题 I'm using WSO2 API-M v3.0.0, and I have created a new role with Login & Subscribe permissions (same permissions that are granted to the "Internal/subscriber" role). But users within this new role are unable to login to the subscriber portal as access is being denied to them. The only workaround I see is to add those users to both the new role AND the Internal/subscriber role. Are there any other changes that need to be done when any new role is created? I am not using a multi-tenant

来源： https://stackoverflow.com/questions/23122469/how-do-i-pass-an-argument-to-a-has-many-association-scope-in-rails-4

来源： https://stackoverflow.com/questions/23122469/how-do-i-pass-an-argument-to-a-has-many-association-scope-in-rails-4

问题 I've got a Session model that has a :created_at date and a :start_time date, both stored in the database as :time . I'm currently spitting out a bunch of results on an enormous table and allowing users to filter results by a single date and an optional range of time using scopes, like so: class Session < ActiveRecord::Base ... scope :filter_by_date, lambda { |date| date = date.split(",")[0] where(:created_at => DateTime.strptime(date, '%m/%d/%Y')..DateTime.strptime(date, '%m/%d/%Y').end_of

问题 Here is the window : so now, when I scroll down (the children appear in the same fashion as displayed above, all way long), I see what I want: but I just fail to access it. Why? Here the code, in a function that lies in a js folder: function update_match(slot, match, s) { $("#match" + slot + " i").text(match); console.log(window); console.log(window.saves1); // undefined console.log(window.external.saves1); // undefined (slot == 1) ? window.saves1.item = s : window.saves2.item = s; } The

问题 Based on the documentation of Google People API I am using profile scope - https://www.googleapis.com/auth/user.phonenumbers.read and PersonFields=phoneNumbers to read the authenticated user's phone numbers only in their Google profile (none from the contact list). I am using API key and oAuth accesstoken to authorise the request. The google people API is not fetching the phone numbers associated with the profile with the above scope alone. Adding the scope for the entire contact list read