Adds REST API for issue relations (#7366).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@6176 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/issue_relations_controller.rb

@@ -1,5 +1,5 @@
-# redMine - project management software
-# Copyright (C) 2006-2007  Jean-Philippe Lang
+# Redmine - project management software
+# Copyright (C) 2006-2011  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -17,14 +17,28 @@
 
 class IssueRelationsController < ApplicationController
   before_filter :find_issue, :find_project_from_association, :authorize
+  accept_key_auth :show, :create, :destroy
   
-  def new
+  def show
+    @relation = @issue.find_relation(params[:id])
+
+    respond_to do |format|
+      format.html { render :nothing => true }
+      format.api
+    end
+  rescue ActiveRecord::RecordNotFound
+    render_404
+  end
+  
+  verify :method => :post, :only => :create, :render => {:nothing => true, :status => :method_not_allowed }
+  def create
     @relation = IssueRelation.new(params[:relation])
     @relation.issue_from = @issue
     if params[:relation] && m = params[:relation][:issue_to_id].to_s.match(/^#?(\d+)$/)
       @relation.issue_to = Issue.visible.find_by_id(m[1].to_i)
     end
-    @relation.save if request.post?
+    saved = @relation.save
+    
     respond_to do |format|
       format.html { redirect_to :controller => 'issues', :action => 'show', :id => @issue }
       format.js do
@@ -37,22 +51,31 @@ class IssueRelationsController < ApplicationController
           end
         end
       end
+      format.api { 
+        if saved
+          render :action => 'show', :status => :created, :location => issue_relation_url(@issue, @relation)
+        else
+          render_validation_errors(@relation)
+        end
+      }
     end
   end
   
+  verify :method => :delete, :only => :destroy, :render => {:nothing => true, :status => :method_not_allowed }
   def destroy
-    relation = IssueRelation.find(params[:id])
-    if request.post? && @issue.relations.include?(relation)
-      relation.destroy
-      @issue.reload
-    end
+    relation = @issue.find_relation(params[:id])
+    relation.destroy
+    
     respond_to do |format|
       format.html { redirect_to :controller => 'issues', :action => 'show', :id => @issue }
       format.js {
-        @relations = @issue.relations.select {|r| r.other_issue(@issue) && r.other_issue(@issue).visible? }
+        @relations = @issue.reload.relations.select {|r| r.other_issue(@issue) && r.other_issue(@issue).visible? }
         render(:update) {|page| page.replace_html "relations", :partial => 'issues/relations'}
       }
+      format.api { head :ok }
     end
+  rescue ActiveRecord::RecordNotFound
+    render_404
   end
   
 private

app/models/issue.rb

@@ -501,6 +501,11 @@ class Issue < ActiveRecord::Base
   def relations
     (relations_from + relations_to).sort
   end
+  
+  # Finds an issue relation given its id.
+  def find_relation(relation_id)
+    IssueRelation.find(relation_id, :conditions => ["issue_to_id = ? OR issue_from_id = ?", id, id])
+  end
 
   def all_dependent_issues(except=[])
     except << self

app/views/issue_relations/show.api.rsb

@@ -0,0 +1,7 @@
+api.relation do
+  api.id @relation.id
+  api.issue_id @relation.issue_from_id
+  api.issue_to_id @relation.issue_to_id
+  api.relation_type @relation.relation_type_for(@issue)
+  api.delay @relation.delay
+end

app/views/issues/_relations.rhtml

@@ -20,7 +20,7 @@
 <td class="start_date"><%= format_date(relation.other_issue(@issue).start_date) %></td>
 <td class="due_date"><%= format_date(relation.other_issue(@issue).due_date) %></td>
 <td class="buttons"><%= link_to_remote(image_tag('link_break.png'), { :url => {:controller => 'issue_relations', :action => 'destroy', :issue_id => @issue, :id => relation},                                              
-                                                  :method => :post
+                                                  :method => :delete
                                                 }, :title => l(:label_relation_delete)) if authorize_for('issue_relations', 'destroy') %></td>
 </tr>
 <% end %>
@@ -29,7 +29,7 @@
 <% end %>
 
 <% remote_form_for(:relation, @relation, 
-                 :url => {:controller => 'issue_relations', :action => 'new', :issue_id => @issue},
+                 :url => {:controller => 'issue_relations', :action => 'create', :issue_id => @issue},
                  :method => :post,
                  :complete => "Form.Element.focus('relation_issue_to_id');",
                  :html => {:id => 'new-relation-form', :style => (@relation ? '' : 'display: none;')}) do |f| %>

app/views/issues/show.api.rsb

@@ -27,7 +27,7 @@ api.issue do
   
   api.array :relations do
     @relations.each do |relation|
-      api.relation(:id => relation.id, :issue_id => relation.other_issue(@issue).id, :relation_type => relation.relation_type_for(@issue), :delay => relation.delay)
+      api.relation(:id => relation.id, :issue_id => relation.issue_from_id, :issue_to_id => relation.issue_to_id, :relation_type => relation.relation_type_for(@issue), :delay => relation.delay)
     end
   end if include_in_api_response?('relations') && @relations.present?