onSectionSubmit.js

  onSectionSubmit = (sectionConfig, options = {}) => {
    var applicationData = this.props.applicationData;
    if (!applicationData.isAuthenticated()) {
      applicationData.fetch().done(data => {
        var sectionConfigs = this.state.sectionConfigs;
        sectionConfigs.push(this.getNextSectionConfig(sectionConfig));
        this.setState({sectionConfigs});
        this.scrollToLastSection();
      });
      return;
    }

    var {section, model, modelIndex} = sectionConfig.unpack();
    if (this.sectionsWithoutSaveOnSubmit.indexOf(section) === -1) {
      if (this.sectionsStoredInAppModel.indexOf(section) !== -1) {
        applicationData.set(section, model);
      } else {
        this.state.applicant.saveSection(section, model, modelIndex);
      }

      applicationData.save().fail(function() {
        FinancingHelpers.alert('Error saving application. Please try again.');
      });
    }

    // Generate next state.
    var nextSectionConfig;
    var sectionInReview;
    if (this.isSectionInReview(sectionConfig)) {
      if (section === FinancingConstants.EMPLOYMENT_KIND) {
        this.didSubmitEmploymentKindSectionInReview(sectionConfig);
      }
      nextSectionConfig = this.getNextSectionToReview(sectionConfig) || this.buildReviewSectionConfig();
      sectionInReview = nextSectionConfig;
    } else {
      nextSectionConfig = this.getNextSectionConfig(sectionConfig);
      sectionInReview = null;
    }
    var applicant = nextSectionConfig.get('applicant') || this.state.applicant;
    var applicantIndex = applicant === this.props.applicant ? 0 : 1;
    var sectionConfigs;
    if (this.isSectionInPage(nextSectionConfig)) {
      sectionConfigs = this.state.sectionConfigs;
    } else {
      var insertIndex = this.findSectionConfigIndex(sectionConfig) + 1;
      sectionConfigs = this.state.sectionConfigs.slice(0, insertIndex)
        .concat([nextSectionConfig])
        .concat(this.state.sectionConfigs.slice(insertIndex));
    }

    this.setState({applicant, applicantIndex, sectionConfigs, sectionInReview});

    // Scroll to next section.
    if (options.scrollToTop) {
      this.scrollToTop();
    } else {
      this.scrollToSectionConfig(nextSectionConfig);
    }
  }