108 lines
3 KiB
Ruby
108 lines
3 KiB
Ruby
# The ChangesetController is the RESTful interface to Changeset objects
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class ChangesetController < ApplicationController
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require 'xml/libxml'
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require 'diff_reader'
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before_filter :authorize, :only => [:create, :update, :delete, :upload]
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before_filter :check_write_availability, :only => [:create, :update, :delete, :upload]
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before_filter :check_read_availability, :except => [:create, :update, :delete, :upload]
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after_filter :compress_output
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# Create a changeset from XML.
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def create
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if request.put?
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cs = Changeset.from_xml(request.raw_post, true)
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if cs
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cs.user_id = @user.id
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cs.save_with_tags!
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render :text => cs.id.to_s, :content_type => "text/plain"
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else
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render :nothing => true, :status => :bad_request
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end
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else
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render :nothing => true, :status => :method_not_allowed
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end
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end
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def create_prim(ids, prim, nd)
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prim.version = 0
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prim.user_id = @user.id
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prim.visible = true
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prim.save_with_history!
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ids[nd['id'].to_i] = prim.id
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end
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def fix_way(w, node_ids)
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w.nds = w.instance_eval { @nds }.
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map { |nd| node_ids[nd] || nd }
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return w
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end
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def fix_rel(r, ids)
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r.members = r.instance_eval { @members }.
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map { |memb| [memb[0], ids[memb[0]][memb[1].to_i] || memb[1], memb[2]] }
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return r
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end
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def read
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begin
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changeset = Changeset.find(params[:id])
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render :text => changeset.to_xml.to_s, :content_type => "text/xml"
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rescue ActiveRecord::RecordNotFound
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render :nothing => true, :status => :not_found
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end
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end
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def close
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begin
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unless request.put?
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render :nothing => true, :status => :method_not_allowed
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return
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end
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changeset = Changeset.find(params[:id])
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changeset.open = false
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changeset.save!
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render :nothing => true
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rescue ActiveRecord::RecordNotFound
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render :nothing => true, :status => :not_found
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end
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end
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##
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# Upload a diff in a single transaction.
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#
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# This means that each change within the diff must succeed, i.e: that
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# each version number mentioned is still current. Otherwise the entire
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# transaction *must* be rolled back.
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#
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# Furthermore, each element in the diff can only reference the current
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# changeset.
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#
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# Returns: ??? the new document? updated diffs?
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def upload
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# only allow POST requests, as the upload method is most definitely
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# not idempotent, as several uploads with placeholder IDs will have
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# different side-effects.
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# see http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1.2
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unless request.post?
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render :nothing => true, :status => :method_not_allowed
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return
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end
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changeset = Changeset.find(params[:id])
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diff_reader = DiffReader.new(request.raw_post, changeset)
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Changeset.transaction do
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result = diff_reader.commit
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render :text => result.to_s, :content_type => "text/xml"
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end
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rescue ActiveRecord::RecordNotFound
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render :nothing => true, :status => :not_found
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rescue OSM::APIError => ex
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render ex.render_opts
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end
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end
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