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Questions tagged [alias-method-chain]

18 questions
7
votes
1 answer

what is the difference between alias_method and alias_method_chain?

I was working on my web-application and I wanted to override a method for example if the original class is class A def foo 'original' end end I want to override foo method it can be done like this class A alias_method :old_foo, :foo …
H.Elsayed
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4
votes
1 answer

Custom Helper with alias_method_chain on Ruby on Rails in development mode [REDMINE]

I would like to custom the method link_to_issue of the application_helper of Redmine with the principle of the alias_method_chain in order to keep the Redmine code clean in a plugin but I encounter a problem. First of all, here is the patch file,…
Rem's
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3
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3 answers

How to upgrade redmine plugin to rails 5, alias_method_chain is deprecated now

Story mode Just started learning RoR, but in short period of time I need to add functionality similar to Loading images from LDAP (incompatible version) into our project. Project is abondoned, and I can't find any related info/docs, so I'm asking…
Norman Edance
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3
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0 answers

Prepending to module that gets included/extended

I'm moving from using Module#alias_method_chain to Module#prepend. But there is one situation where I cannot achieve the same functionality Suppose I have a library code (two libraries actually, one of which enhances another) # Library 1 object =…
Roman Usherenko
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3
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1 answer

alias_method, alias_method_chain, and self.included

I'm having a little difficulty understanding alias_method/alias_method_chain. I have the following code: module ActionView::Helpers module FormHelper alias_method :form_for_without_cherries, :form_for def form_for(record, options = {},…
PlankTon
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2
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3 answers

How to modify Rails 3 form builder

What is the best way to override form_for? For example, in every form_for(@post), I would like to automatically set the
id attribute to @post.object_id, and add the following field: hidden_field_tag :form_id, @post.object_id Can I do this…
deb
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2
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1 answer

alias_attribute and creating and method with the original attribute name causes a loop

Im trying to dynamically create a method chain in one attribute in my model. By now I have this function: def create_filtered_attribute(attribute_name) alias_attribute "#{attribute_name}_without_filter", attribute_name …
Tiago
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2
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1 answer

Rails - alias_method_chain with a 'attribute=' method

I'd like to 'add on' some code on a model's method via a module, when it is included. I think I should use alias_method_chain, but I don't know how to use it, since my 'aliased method' is one of those methods ending on the '=' sign: class MyModel <…
kikito
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1
vote
1 answer

class << self, alias_method, and monkey patching Mechanize::Cookie

I have an issue with Mechanize::Cookie misbehaving and I want to trying to monkey patch it. My code: class Mechanize::Cookie class << self; alias_method :old_parse, :parse end def self.parse(uri, str, log = Mechanize.log) puts 'new parse!' …
pguardiario
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1
vote
1 answer

How can I omit the middle of a chain of methods?

Suppose I have a class with a save method, and three mixins which modify it using aliasing, e.g. module Callbacks def save_with_callbacks callback :before_save save_without_callbacks end end alias_method_chain :save,…
Simon
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1
vote
2 answers

alias_method_chain on an HABTM attribute's setter isn't working

So I have a HABTM for both Posts and Topics. A Post HABTM Topics, and a Topic HABTM Posts. What I need to do is call some method in conjunction with calling post.topics=() This is what I've tried doing in Post.rb: def…
solidcell
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1
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1 answer

Undefined method with alias_method_chain

My model has attribute html. When I try to use alias_method_chain with setter html=, I get the error undefined method `name=' for class `Banner' But I use alias_method_chain with another attribute. class Banner < ActiveRecord::Base def…
Sergey Vernidub
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1
vote
1 answer

Overring a Rails core mixin method, and still being able to call the old method

Ok title is confusing, Ill tell you my problem first: the polymorphic_url method was changed in Rails 2.2.1 to include some extra functionality I need. However, I want to make the application still work in older versions of Rails, so I wanted to…
dalyons
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0
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2 answers

How to fix activeuuid gem error while upgrading from Rails4 to Rails5

I am updating my application from rails 4 to rails 5. My application is using activeuuid gem. The activeuuid gem is using alias_method_chain internally and this method is deprecated in rails 5. Now when I am trying to start rails console, I am…
Harshwardhan Rathore
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0
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1 answer

Can I use module#prepend instead of alias_method_chain to monkey patch this concern?

I am patching a concern in the Devise Token Auth gem. I have it working with alias_method_chain but am wondering if I can use module#prepend instead in this scenario? Note: We are on ruby 2.2.x Existing: DeviseTokenAuth::Concerns::User.module_eval…
blu
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