1 | import grok |
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2 | from zope.component import getUtility |
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3 | from zope.component.factory import Factory |
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4 | from zope.component.interfaces import Invalid, IFactory |
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5 | from zope.exceptions import DuplicationError |
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6 | from zope.interface import implementedBy |
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7 | from waeup.interfaces import IFacultyContainer, IFaculty |
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8 | from waeup.viewlets import MainArea, LeftSidebar, Index, Add, FormWrapMixin |
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9 | |
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10 | class FacultyContainer(grok.Container): |
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11 | """See interfaces for description. |
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12 | """ |
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13 | grok.implements(IFacultyContainer) |
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14 | grok.require('waeup.manageUniversity') |
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15 | |
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16 | # A simple counter for ids. |
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17 | next_id = 0L |
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18 | |
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19 | def addFaculty(self, faculty): |
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20 | if not IFaculty.providedBy(faculty): |
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21 | raise TypeError('FacultyContainers contain only IFaculty instances') |
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22 | id = str(self.next_id) |
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23 | self[id] = faculty |
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24 | while self.next_id in self.keys(): |
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25 | # Look for next unused int... |
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26 | self.next_id += 1 |
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27 | return id |
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28 | |
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29 | class FacultyContainerFactory(grok.GlobalUtility): |
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30 | """A factory for faculty containers. |
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31 | """ |
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32 | grok.implements(IFactory) |
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33 | grok.name(u'waeup.FacultyContainer') |
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34 | title = u"Create a new faculty container.", |
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35 | description = u"This factory instantiates new faculty containers." |
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36 | |
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37 | def __call__(self): |
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38 | return FacultyContainer() |
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39 | |
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40 | def getInterfaces(self): |
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41 | return implementedBy(FacultyContainer) |
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42 | |
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43 | # |
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44 | # Viewing / Layout stuff... |
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45 | # |
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46 | class Content(grok.Viewlet): |
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47 | grok.viewletmanager(MainArea) |
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48 | grok.context(IFacultyContainer) |
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49 | grok.view(Index) |
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50 | |
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51 | def getFaculties(self): |
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52 | """Convinience method to create a sorted list of faculties. |
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53 | |
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54 | It provides a list of dicts with entries for all data needed by |
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55 | usual list templates. |
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56 | """ |
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57 | result = [] |
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58 | for key, val in self.context.items(): |
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59 | result.append(dict(id=key, name=val.name)) |
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60 | return result |
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61 | |
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62 | class AddFacultyForm(grok.AddForm): |
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63 | grok.context(IFacultyContainer) |
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64 | form_fields = grok.AutoFields(IFaculty) |
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65 | label = 'Add a faculty' |
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66 | |
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67 | @grok.action('Add faculty') |
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68 | def addFaculty(self, **data): |
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69 | faculty = getUtility(IFaculty) |
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70 | self.applyData(faculty, **data) |
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71 | try: |
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72 | self.context.addFaculty(faculty) |
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73 | except DuplicationError: |
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74 | self.status = Invalid('The name chosen already exists ' |
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75 | 'in the database') |
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76 | return |
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77 | self.redirect(self.url(self.context)) |
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78 | |
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79 | |
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80 | class AddFaculty(FormWrapMixin, grok.Viewlet): |
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81 | """A viewlet that wraps the `AddFacultyForm`. |
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82 | """ |
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83 | grok.viewletmanager(MainArea) |
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84 | grok.context(IFacultyContainer) |
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85 | grok.view(Add) |
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86 | grok.require('waeup.manageUniversity') |
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87 | |
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88 | formview_name = 'addfacultyform' # The name of the formview we |
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89 | # want to be rendered in this |
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90 | # viewlet. |
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91 | |
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92 | |
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93 | class AddFacultyLink(grok.Viewlet): |
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94 | """A link in the left sidebar displaying 'Add faculty' |
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95 | """ |
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96 | grok.viewletmanager(LeftSidebar) |
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97 | grok.context(IFacultyContainer) |
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98 | grok.view(Index) |
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99 | grok.order(5) |
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100 | # This is so cool! This link is only displayed, when the user is |
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101 | # allowed to use it! |
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102 | grok.require('waeup.manageUniversity') |
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103 | |
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104 | def render(self): |
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105 | return u'<div class="portlet"><a href="add">Add faculty</a></div>' |
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