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2011-06-29 14:41:49 +05:30

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<h1>Source code for webnotes.widgets.follow</h1><div class="highlight"><pre>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">Server side methods for the follower pattern (Follow button used in forms)</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">import</span> <span class="nn">webnotes</span>
<span class="n">form</span> <span class="o">=</span> <span class="n">webnotes</span><span class="o">.</span><span class="n">form_dict</span>
<span class="c">#</span>
<span class="c"># Follow</span>
<span class="c">#</span>
<div class="viewcode-block" id="follow"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.follow">[docs]</a><span class="k">def</span> <span class="nf">follow</span><span class="p">(</span><span class="n">dt</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">dn</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">user</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">verbose</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span>
<span class="s">&quot;Add as follower to a particular record. If no parameteres, then take from the http request (form)&quot;</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">dt</span><span class="p">:</span>
<span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">user</span> <span class="o">=</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;dt&#39;</span><span class="p">),</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;dn&#39;</span><span class="p">),</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;user&#39;</span><span class="p">)</span>
<span class="n">verbose</span> <span class="o">=</span> <span class="mi">1</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">user</span><span class="p">:</span> <span class="k">return</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">is_follower</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">user</span><span class="p">):</span>
<span class="n">make_follower</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">user</span><span class="p">,</span> <span class="n">verbose</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">if</span> <span class="n">verbose</span><span class="p">:</span> <span class="n">webnotes</span><span class="o">.</span><span class="n">msgprint</span><span class="p">(</span><span class="s">&quot;</span><span class="si">%s</span><span class="s"> is already a follower!&quot;</span> <span class="o">%</span> <span class="n">user</span><span class="p">)</span>
<span class="k">return</span> <span class="n">load_followers</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="make_follower"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.make_follower">[docs]</a><span class="k">def</span> <span class="nf">make_follower</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">user</span><span class="p">,</span> <span class="n">verbose</span><span class="p">):</span>
<span class="s">&quot;Add the user as a follower&quot;</span>
<span class="k">if</span> <span class="n">has_permission</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">user</span><span class="p">):</span>
<span class="kn">from</span> <span class="nn">webnotes.model.doc</span> <span class="kn">import</span> <span class="n">Document</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">Document</span><span class="p">(</span><span class="s">&#39;Follower&#39;</span><span class="p">)</span>
<span class="n">d</span><span class="o">.</span><span class="n">doc_type</span> <span class="o">=</span> <span class="n">dt</span>
<span class="n">d</span><span class="o">.</span><span class="n">doc_name</span> <span class="o">=</span> <span class="n">dn</span>
<span class="n">d</span><span class="o">.</span><span class="n">owner</span> <span class="o">=</span> <span class="n">user</span>
<span class="n">d</span><span class="o">.</span><span class="n">save</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">if</span> <span class="n">verbose</span><span class="p">:</span> <span class="n">webnotes</span><span class="o">.</span><span class="n">msgprint</span><span class="p">(</span><span class="s">&#39;</span><span class="si">%s</span><span class="s"> does not have sufficient permission to follow&#39;</span> <span class="o">%</span> <span class="n">user</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="has_permission"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.has_permission">[docs]</a><span class="k">def</span> <span class="nf">has_permission</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">user</span><span class="p">):</span>
<span class="s">&quot;Check to see if the user has permission to follow&quot;</span>
<span class="k">return</span> <span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">sql</span><span class="p">(</span><span class="s">&quot;select name from tabDocPerm where parent=</span><span class="si">%s</span><span class="s"> and ifnull(`read`,0)=1 and role in (&#39;</span><span class="si">%s</span><span class="s">&#39;) limit 1&quot;</span> \
<span class="o">%</span> <span class="p">(</span><span class="s">&#39;</span><span class="si">%s</span><span class="s">&#39;</span><span class="p">,</span> <span class="p">(</span><span class="s">&quot;&#39;, &#39;&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">webnotes</span><span class="o">.</span><span class="n">user</span><span class="o">.</span><span class="n">get_roles</span><span class="p">()))),</span> <span class="n">dt</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="is_follower"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.is_follower">[docs]</a><span class="k">def</span> <span class="nf">is_follower</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">user</span><span class="p">):</span>
<span class="s">&quot;returns true if given user is a follower&quot;</span>
<span class="k">return</span> <span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">sql</span><span class="p">(</span><span class="s">&quot;&quot;&quot;</span>
<span class="s"> select name from tabFollower </span>
<span class="s"> where ifnull(doc_type,&#39;&#39;)=</span><span class="si">%s</span><span class="s"> </span>
<span class="s"> and ifnull(doc_name,&#39;&#39;)=</span><span class="si">%s</span><span class="s"> </span>
<span class="s"> and owner=</span><span class="si">%s</span><span class="s">&quot;&quot;&quot;</span><span class="p">,</span> <span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">user</span><span class="p">))</span>
<span class="c">#</span>
<span class="c"># Unfollow</span>
<span class="c">#</span></div>
<div class="viewcode-block" id="unfollow"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.unfollow">[docs]</a><span class="k">def</span> <span class="nf">unfollow</span><span class="p">(</span><span class="n">dt</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">dn</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">user</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="s">&quot;Unfollow a particular record. If no parameteres, then take from the http request (form)&quot;</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">dt</span><span class="p">:</span>
<span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">user</span> <span class="o">=</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;dt&#39;</span><span class="p">),</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;dn&#39;</span><span class="p">),</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;user&#39;</span><span class="p">)</span>
<span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">sql</span><span class="p">(</span><span class="s">&quot;delete from tabFollower where doc_name=</span><span class="si">%s</span><span class="s"> and doc_type=</span><span class="si">%s</span><span class="s"> and owner=</span><span class="si">%s</span><span class="s">&quot;</span><span class="p">,</span> <span class="p">(</span><span class="n">dn</span><span class="p">,</span> <span class="n">dt</span><span class="p">,</span> <span class="n">user</span><span class="p">))</span>
<span class="k">return</span> <span class="n">load_followers</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">)</span>
<span class="c">#</span>
<span class="c"># Load followers</span>
<span class="c">#</span></div>
<div class="viewcode-block" id="load_followers"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.load_followers">[docs]</a><span class="k">def</span> <span class="nf">load_followers</span><span class="p">(</span><span class="n">dt</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">dn</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="s">&quot;returns list of followers (Full Names) for a particular object&quot;</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">dt</span><span class="p">:</span> <span class="n">dt</span><span class="p">,</span> <span class="n">dn</span> <span class="o">=</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;dt&#39;</span><span class="p">),</span> <span class="n">form</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;dn&#39;</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[</span><span class="n">t</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">sql</span><span class="p">(</span><span class="s">&quot;&quot;&quot;</span>
<span class="s"> SELECT IFNULL(CONCAT(t1.first_name, if(t1.first_name IS NULL, &#39;&#39;, &#39; &#39;), t1.last_name), t1.name)</span>
<span class="s"> FROM tabProfile t1, tabFollower t2 WHERE t2.doc_type=</span><span class="si">%s</span><span class="s"> AND t2.doc_name=</span><span class="si">%s</span><span class="s"> </span>
<span class="s"> AND t1.name = t2.owner&quot;&quot;&quot;</span><span class="p">,</span> <span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">))]</span>
<span class="k">except</span> <span class="ne">Exception</span><span class="p">,</span> <span class="n">e</span><span class="p">:</span>
<span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="ow">in</span> <span class="p">(</span><span class="mi">1146</span><span class="p">,</span> <span class="mi">1054</span><span class="p">):</span>
<span class="n">setup</span><span class="p">()</span>
<span class="k">return</span> <span class="p">[]</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">e</span>
<span class="c">#</span>
<span class="c"># Email followers</span>
<span class="c">#</span></div>
<div class="viewcode-block" id="email_followers"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.email_followers">[docs]</a><span class="k">def</span> <span class="nf">email_followers</span><span class="p">(</span><span class="n">dt</span><span class="p">,</span> <span class="n">dn</span><span class="p">,</span> <span class="n">msg_html</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">msg_text</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="s">&quot;Send an email to all followers of this object&quot;</span>
<span class="k">pass</span>
<span class="c">#</span>
<span class="c"># Update feed</span>
<span class="c">#</span></div>
<div class="viewcode-block" id="on_docsave"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.on_docsave">[docs]</a><span class="k">def</span> <span class="nf">on_docsave</span><span class="p">(</span><span class="n">doc</span><span class="p">):</span>
<span class="s">&quot;Add the owner and all linked Profiles as followers&quot;</span>
<span class="n">follow</span><span class="p">(</span><span class="n">doc</span><span class="o">.</span><span class="n">doctype</span><span class="p">,</span> <span class="n">doc</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">doc</span><span class="o">.</span><span class="n">owner</span><span class="p">)</span>
<span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">get_profile_fields</span><span class="p">(</span><span class="n">doc</span><span class="o">.</span><span class="n">doctype</span><span class="p">):</span>
<span class="n">follow</span><span class="p">(</span><span class="n">doc</span><span class="o">.</span><span class="n">doctype</span><span class="p">,</span> <span class="n">doc</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">doc</span><span class="o">.</span><span class="n">fields</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">p</span><span class="p">))</span>
<span class="n">update_followers</span><span class="p">(</span><span class="n">doc</span> <span class="o">=</span> <span class="n">doc</span><span class="p">)</span>
<span class="c">#</span>
<span class="c"># update the follower record timestamp and subject</span>
<span class="c">#</span></div>
<div class="viewcode-block" id="update_followers"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.update_followers">[docs]</a><span class="k">def</span> <span class="nf">update_followers</span><span class="p">(</span><span class="n">dt</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">dn</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">subject</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">update_by</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">doc</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="s">&quot;Updates the timestamp and subject in follower table (for feed generation)&quot;</span>
<span class="kn">from</span> <span class="nn">webnotes.utils</span> <span class="kn">import</span> <span class="n">now</span>
<span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">sql</span><span class="p">(</span><span class="s">&quot;update tabFollower set modified=</span><span class="si">%s</span><span class="s">, subject=</span><span class="si">%s</span><span class="s">, modified_by=</span><span class="si">%s</span><span class="s"> where doc_type=</span><span class="si">%s</span><span class="s"> and doc_name=</span><span class="si">%s</span><span class="s">&quot;</span><span class="p">,</span> \
<span class="p">(</span><span class="n">now</span><span class="p">(),</span>
<span class="n">subject</span> <span class="ow">or</span> <span class="n">doc</span><span class="o">.</span><span class="n">fields</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;subject&#39;</span><span class="p">),</span> \
<span class="n">update_by</span> <span class="ow">or</span> <span class="n">webnotes</span><span class="o">.</span><span class="n">session</span><span class="p">[</span><span class="s">&#39;user&#39;</span><span class="p">],</span>\
<span class="n">dt</span> <span class="ow">or</span> <span class="n">doc</span><span class="o">.</span><span class="n">doctype</span><span class="p">,</span>
<span class="n">dn</span> <span class="ow">or</span> <span class="n">doc</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
<span class="c">#</span>
<span class="c"># get type of &quot;Profile&quot; fields</span>
<span class="c">#</span></div>
<div class="viewcode-block" id="get_profile_fields"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.get_profile_fields">[docs]</a><span class="k">def</span> <span class="nf">get_profile_fields</span><span class="p">(</span><span class="n">dt</span><span class="p">):</span>
<span class="s">&quot;returns a list of all profile link fields from the doctype&quot;</span>
<span class="k">return</span> <span class="p">[</span><span class="n">f</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">f</span> <span class="ow">in</span> \
<span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">sql</span><span class="p">(</span><span class="s">&quot;select fieldname from tabDocField where parent=</span><span class="si">%s</span><span class="s"> and fieldtype=&#39;Link&#39; and options=&#39;Profile&#39;&quot;</span><span class="p">,</span> <span class="n">dt</span><span class="p">)]</span>
<span class="c">#</span>
<span class="c"># setup - make followers table</span>
<span class="c">#</span></div>
<div class="viewcode-block" id="setup"><a class="viewcode-back" href="../../../webnotes.widgets.html#webnotes.widgets.follow.setup">[docs]</a><span class="k">def</span> <span class="nf">setup</span><span class="p">():</span>
<span class="s">&quot;Make table for followers - if missing&quot;</span>
<span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
<span class="kn">from</span> <span class="nn">webnotes.modules.module_manager</span> <span class="kn">import</span> <span class="n">reload_doc</span>
<span class="n">reload_doc</span><span class="p">(</span><span class="s">&#39;core&#39;</span><span class="p">,</span> <span class="s">&#39;doctype&#39;</span><span class="p">,</span> <span class="s">&#39;follower&#39;</span><span class="p">)</span>
<span class="n">webnotes</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">begin</span><span class="p">()</span> </div>
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